Glasfynydd (Usk Reservoir) (Carmarthenshire) weather
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Forecast days
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Today. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Sunny. Sunrise: 05:01; Sunset: 21:25. UV: Very high; Pollution: Low; Pollen: High.Today. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Sunny. Sunrise: 05:01; Sunset: 21:25. UV: Very high; Pollution: Low; Pollen: High.
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Saturday 3 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Sunny. Sunrise: 05:00; Sunset: 21:26. UV: Very high; Pollution: Low; Pollen: High.Saturday 3 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Sunny. Sunrise: 05:00; Sunset: 21:26. UV: Very high; Pollution: Low; Pollen: High.
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Sunday 4 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny. Sunrise: 04:59; Sunset: 21:27. UV: Very high; Pollution: Low; Pollen: High.Sunday 4 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny. Sunrise: 04:59; Sunset: 21:27. UV: Very high; Pollution: Low; Pollen: High.
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Monday 5 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny. Sunrise: 04:59; Sunset: 21:28. UV: Very high; Pollution: Low; Pollen: High.Monday 5 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny. Sunrise: 04:59; Sunset: 21:28. UV: Very high; Pollution: Low; Pollen: High.
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Tuesday 6 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny intervals. Sunrise: 04:58; Sunset: 21:29. UV: Very high; No pollen data.Tuesday 6 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny intervals. Sunrise: 04:58; Sunset: 21:29. UV: Very high; No pollen data.
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Wednesday 7 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny intervals. Sunrise: 04:58; Sunset: 21:30. UV: High;Wednesday 7 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny intervals. Sunrise: 04:58; Sunset: 21:30. UV: High;
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Thursday 8 June. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Sunny intervals. Sunrise: 04:57; Sunset: 21:31. UV: High;Thursday 8 June. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Sunny intervals. Sunrise: 04:57; Sunset: 21:31. UV: High;
Seven day forecast for Glasfynydd (Usk Reservoir)
| Time | 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% |
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8°
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8°
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8°
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8°
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9°
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10°
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11°
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13°
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14°
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15°
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16°
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17°
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17°
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17°
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17°
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16°
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15°
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14°
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12°
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11°
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5° | 4° | 4° | 4° | 6° | 7° | 9° | 10° | 12° | 13° | 14° | 14° | 15° | 15° | 14° | 14° | 13° | 12° | 10° | 9° |
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E
15
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E
14
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E
15
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E
16
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E
14
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E
13
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ENE
12
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ENE
11
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ENE
11
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ENE
11
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ENE
10
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ENE
10
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ENE
10
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ENE
10
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ENE
10
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ENE
10
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ENE
9
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ENE
9
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ENE
9
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E
10
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27 | 26 | 27 | 27 | 23 | 21 | 20 | 19 | 19 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 21 | 22 | 22 |
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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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86% | 84% | 84% | 79% | 77% | 72% | 66% | 61% | 57% | 55% | 51% | 49% | 47% | 46% | 46% | 48% | 52% | 56% | 61% | 66% |
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UV
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- | - | 1 | 1 | 2 | 3 | 4 | 5 | 6 | 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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| Weather symbol |
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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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10°
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8°
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8°
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7°
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6°
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6°
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6°
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7°
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9°
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11°
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12°
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14°
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16°
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17°
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18°
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18°
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19°
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19°
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18°
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18°
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16°
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15°
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13°
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12°
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7° | 6° | 5° | 4° | 3° | 3° | 3° | 4° | 6° | 8° | 10° | 12° | 14° | 15° | 15° | 16° | 17° | 16° | 16° | 16° | 15° | 13° | 12° | 10° |
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E
10
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E
9
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E
10
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E
10
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E
9
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E
10
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E
10
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E
11
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E
11
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E
10
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E
10
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ENE
9
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ENE
9
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ENE
9
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ENE
9
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ENE
9
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ENE
8
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ENE
8
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ENE
9
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ENE
9
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ENE
8
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ENE
8
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E
7
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E
8
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23 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 19 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 16 | 17 |
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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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69% | 75% | 79% | 84% | 87% | 88% | 88% | 85% | 78% | 70% | 62% | 54% | 48% | 44% | 44% | 44% | 43% | 44% | 46% | 48% | 56% | 62% | 70% | 73% |
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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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11°
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10°
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8°
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9°
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13°
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17°
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19°
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18°
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13°
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9° | 8° | 5° | 7° | 12° | 16° | 17° | 16° | 11° |
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E
8
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E
9
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ENE
9
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ENE
9
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ENE
9
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E
8
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ENE
8
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ENE
8
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ENE
6
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17 | 17 | 17 | 18 | 19 | 19 | 18 | 17 | 13 |
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VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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76% | 79% | 87% | 82% | 65% | 53% | 49% | 54% | 76% |
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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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10°
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8°
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10°
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14°
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17°
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19°
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17°
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12°
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8° | 6° | 8° | 12° | 15° | 17° | 16° | 11° |
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E
6
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ENE
6
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ENE
7
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ENE
9
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ENE
9
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ENE
9
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ENE
9
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ENE
7
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12 | 12 | 15 | 19 | 20 | 20 | 18 | 13 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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85% | 92% | 85% | 68% | 55% | 52% | 57% | 77% |
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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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10°
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7°
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9°
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13°
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17°
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18°
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17°
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12°
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8° | 5° | 7° | 11° | 15° | 16° | 15° | 11° |
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ENE
7
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ENE
8
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ENE
9
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ENE
10
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ENE
10
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ENE
9
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ENE
9
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ENE
7
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14 | 14 | 18 | 22 | 23 | 21 | 19 | 14 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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86% | 92% | 85% | 67% | 56% | 52% | 57% | 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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10°
|
8°
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9°
|
13°
|
16°
|
17°
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17°
|
13°
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8° | 5° | 7° | 11° | 14° | 15° | 15° | 11° |
|
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ENE
8
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ENE
8
|
ENE
9
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ENE
10
|
ENE
10
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E
10
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E
9
|
ENE
9
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15 | 15 | 18 | 22 | 23 | 21 | 19 | 17 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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83% | 90% | 83% | 68% | 58% | 56% | 57% | 72% |
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UV
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- | - | 1 | 5 | 7 | 5 | 2 | - |
| 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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10°
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9°
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9°
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12°
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16°
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17°
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17°
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13°
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8° | 7° | 6° | 10° | 14° | 15° | 15° | 11° |
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ENE
8
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ENE
9
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ENE
10
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ENE
10
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ENE
10
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ENE
10
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ENE
10
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ENE
9
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16 | 18 | 20 | 22 | 23 | 23 | 21 | 19 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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81% | 83% | 83% | 70% | 57% | 56% | 56% | 70% |
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UV
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- | - | 2 | 4 | 7 | 4 | 2 | - |
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:
Remaining settled with plenty of warm sunshine.
This Evening and Tonight:
Remaining dry this evening with plenty of late sunshine. Cloud gradually building from the east, though patchier than recent nights, with the clearest skies further west. Rather breezy and feeling cooler. Minimum temperature 5 °C.
Friday:
Cloud soon breaking up through the morning to leave another fine and settled day with plenty of warm sunshine and a gentle breeze. Maximum temperature 22 °C.
Outlook for Saturday to Monday:
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
In general, the UK is likely to see a continuation of the recent dry weather for much of this period. Eastern and northern areas are likely to see more cloud than the west, especially in coastal areas exposed to onshore winds. It will likely feel warm to rather warm across western areas, though cooler in the east when under cloud. There is a chance of isolated showers, mostly over high ground, in the early part of the period, with a small, but increasing, risk of rain or showers, perhaps thundery, over parts of southern and south-eastern England and Wales as the period progresses. Winds are likely to be light for most, though stronger in the south of England, and in coastal areas near the English Channel.
Updated:
An uncertain second half to the month. The most likely scenario is for dry settled conditions in the north, and a risk of rain or showers, perhaps thundery, in the south. Winds may ease over the period leading to temperatures increasing to average to above average in eastern areas; elsewhere in the UK, it is likely to feel warm to rather warm.
Updated:
