Porthmadog (Gwynedd) weather
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Forecast days
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Today. Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny. Sunrise: 04:56; Sunset: 21:35. UV: Very high; Pollution: Low; Pollen: High. Tide: Next high at .Today. Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny. Sunrise: 04:56; Sunset: 21:35. UV: Very high; Pollution: Low; Pollen: High. Tide: Next high at .
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Monday 5 June. Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: 04:55; Sunset: 21:36. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .Monday 5 June. Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: 04:55; Sunset: 21:36. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .
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Tuesday 6 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: 04:54; Sunset: 21:37. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .Tuesday 6 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: 04:54; Sunset: 21:37. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .
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Wednesday 7 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: 04:54; Sunset: 21:37. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .Wednesday 7 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: 04:54; Sunset: 21:37. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .
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Thursday 8 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to cloudy by early evening. Sunrise: 04:53; Sunset: 21:38. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .Thursday 8 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to cloudy by early evening. Sunrise: 04:53; Sunset: 21:38. UV: Very high; Pollution: Low; Pollen: High. Tide: First high at .
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Friday 9 June. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy. Sunrise: 04:53; Sunset: 21:39. UV: High; Tide: First high at .Friday 9 June. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy. Sunrise: 04:53; Sunset: 21:39. UV: High; Tide: First high at .
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Saturday 10 June. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: 04:52; Sunset: 21:40. UV: High; Tide: First high at .Saturday 10 June. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: 04:52; Sunset: 21:40. UV: High; Tide: First high at .
Seven day forecast for Porthmadog
| Time | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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11°
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13°
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15°
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17°
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18°
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19°
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20°
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20°
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20°
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21°
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21°
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21°
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21°
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21°
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20°
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18°
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16°
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15°
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10° | 12° | 14° | 15° | 17° | 17° | 18° | 18° | 18° | 19° | 19° | 19° | 20° | 20° | 18° | 16° | 15° | 14° |
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ENE
7
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E
6
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E
7
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E
7
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ENE
6
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E
7
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ESE
7
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SSW
8
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SW
9
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SSW
8
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SSW
8
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SSW
8
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WNW
6
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ENE
5
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ENE
8
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NE
9
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NE
8
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ENE
8
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11 | 12 | 9 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 11 | 10 | 8 | 9 | 14 | 17 | 12 | 11 |
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VG | VG | VG | VG | VG | E | E | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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62% | 56% | 51% | 46% | 42% | 40% | 39% | 46% | 46% | 44% | 45% | 46% | 46% | 47% | 51% | 59% | 61% | 66% |
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UV
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1 | 1 | 3 | 4 | 5 | 6 | 7 | 8 | 7 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | - | - |
| Time | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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15°
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14°
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14°
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13°
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12°
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12°
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13°
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14°
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16°
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18°
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19°
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20°
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19°
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19°
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20°
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20°
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20°
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21°
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21°
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20°
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19°
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17°
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15°
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14°
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13° | 13° | 12° | 12° | 11° | 11° | 12° | 13° | 15° | 17° | 18° | 18° | 17° | 17° | 18° | 18° | 18° | 19° | 19° | 19° | 17° | 15° | 14° | 13° |
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ENE
8
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ENE
8
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NE
8
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NE
7
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ENE
7
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ENE
7
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ENE
6
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ENE
6
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ENE
5
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ENE
5
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ENE
7
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E
7
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SSE
9
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S
10
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S
10
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SSE
9
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SSE
10
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NNE
9
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NE
8
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ENE
8
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ENE
9
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NE
10
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NE
9
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ENE
8
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15 | 15 | 12 | 10 | 9 | 11 | 11 | 10 | 8 | 8 | 11 | 11 | 13 | 14 | 14 | 14 | 15 | 14 | 13 | 13 | 15 | 17 | 14 | 13 |
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VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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66% | 66% | 67% | 69% | 73% | 73% | 74% | 72% | 67% | 60% | 56% | 53% | 57% | 57% | 56% | 55% | 55% | 49% | 52% | 52% | 58% | 66% | 72% | 76% |
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UV
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- | - | - | - | - | - | 1 | 1 | 3 | 4 | 5 | 6 | 7 | 8 | 7 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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14°
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13°
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11°
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13°
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17°
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18°
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19°
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18°
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14°
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12° | 12° | 10° | 12° | 15° | 16° | 17° | 16° | 13° |
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ENE
7
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ENE
6
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ENE
6
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ENE
5
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ENE
8
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ENE
10
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ENE
11
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ENE
11
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ENE
8
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13 | 10 | 8 | 9 | 15 | 20 | 21 | 19 | 14 |
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VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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77% | 78% | 83% | 77% | 60% | 55% | 53% | 59% | 80% |
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UV
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- | - | - | 1 | 5 | 8 | 5 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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12°
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11°
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12°
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15°
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18°
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19°
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19°
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16°
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11° | 9° | 11° | 13° | 16° | 17° | 16° | 14° |
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E
7
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E
6
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E
7
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E
9
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ENE
10
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ENE
11
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E
11
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E
10
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10 | 10 | 12 | 17 | 19 | 21 | 20 | 16 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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86% | 88% | 81% | 66% | 58% | 55% | 59% | 74% |
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UV
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- | - | 1 | 5 | 8 | 5 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
|
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13°
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11°
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12°
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15°
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18°
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20°
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20°
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16°
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12° | 9° | 11° | 13° | 16° | 17° | 17° | 14° |
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E
9
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E
9
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E
10
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E
11
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E
11
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E
12
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E
12
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E
11
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14 | 14 | 16 | 19 | 22 | 22 | 21 | 18 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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81% | 84% | 77% | 67% | 60% | 56% | 59% | 73% |
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UV
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- | - | 1 | 5 | 8 | 5 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | 10% | <5% |
|
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14°
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12°
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13°
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16°
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19°
|
20°
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20°
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18°
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12° | 10° | 11° | 14° | 17° | 18° | 18° | 16° |
|
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E
11
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E
11
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E
10
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E
11
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E
12
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E
12
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E
11
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E
10
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18 | 17 | 17 | 19 | 22 | 22 | 20 | 17 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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78% | 80% | 74% | 66% | 62% | 58% | 60% | 73% |
|
UV
|
- | - | 1 | 5 | 7 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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10% | <5% | <5% | 10% | 10% | 10% | 10% | 10% |
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16°
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14°
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16°
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18°
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20°
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21°
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20°
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17°
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14° | 13° | 15° | 17° | 19° | 20° | 20° | 17° |
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E
10
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E
8
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E
7
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E
7
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ESE
8
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SE
8
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ESE
7
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NE
6
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16 | 13 | 12 | 14 | 16 | 17 | 14 | 11 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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78% | 81% | 75% | 68% | 65% | 65% | 68% | 83% |
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UV
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- | - | 1 | 4 | 6 | 3 | 1 | - |
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail and drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
The arrow shows the direction of the wind (up is north). If the arrow points from land to sea, the wind will be blowing out to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks. These winds can blow you out to sea. Read more about how wind will affect you at the beach.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Moderate) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
This is the average height of the waves, 1-2 miles out to sea. The height of the waves can vary. The individual waves out to sea or at the beach can be higher than this number. If you are close to the water, keep an eye on the waves to stop you or your belongings being swept away.
Read more about calculating the expected height of the waves at the beach.
This is the average number of seconds between one wave and the next, 1-2 miles out to sea. A long wave period (more than 10 seconds) means the waves at the beach may be more powerful. Lifeguards can give you advice on waves if you’re planning to go into the water.
Read more about the period of waves.
The arrow shows the average direction of the waves 1-2 miles out to sea. It indicates how sheltered the beach will be from these waves. If the arrow points towards land, most of the waves’ power will reach the beach. If the arrow is parallel to or pointing away from land, the wave height is likely to be lower on the beach than it is offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Wales weather forecast
Headline:
A fine end to the weekend, with plenty of sunshine.
Today:
After a cool start, especially in rural areas, it will be another fine and dry day with long lived strong sunshine. Feeling warm in the sunshine but still a little fresher at the coast in the breeze. Maximum temperature 23 °C.
Tonight:
Plenty of late evening sunshine to end Sunday. Overnight cloud will spread into the far east though much of the region will remain clear. Minimum temperature 6 °C.
Monday:
After any cloud in the far east lifts and breaks through the morning, it will be a bright and fine day with strong sunshine. Maximum temperature 22 °C.
Outlook for Tuesday to Thursday:
Staying dry with high pressure remaining dominant. Plenty of strong sunshine but some cloud bubbling up at times. Warm days, albeit cool overnight with a slight breeze.
Updated:
UK long range weather forecast
The start of the period will most likely be generally dry and sunny across the UK. However, cloudy with an odd spot of rain in the far north. Clouds should return from the North Sea overnight and move into central and eastern areas and burns away towards the coast each morning. A slim chance of an isolated shower each day in Scotland, Northern Ireland and some higher grounds. Winds expected to be generally light in the North and a little stronger towards the South especially along the English Channel. Temperatures are expected to be warmer than average but chillier towards the eastern coast. Later in the period, there is a low risk of some thundery rain or showers in the south.
Updated:
High pressure is likely to become less dominant with time, especially in the south with low pressure likely to approach from the near Continent. Northern areas may hang on to the largely dry conditions, but southern areas will see an increased risk of occasional heavy rain or thunderstorms from time to time. Any changes will be slow though, and there will still be plenty of dry and warm, sunny weather between any rain or thunderstorms, with temperatures widely above average, perhaps significantly so.
Updated:
