Carmarthen (Carmarthenshire) weather
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Forecast days
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Today. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 3 degrees Celsius. Cloudy changing to sunny by early evening. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Today. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 3 degrees Celsius. Cloudy changing to sunny by early evening. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Thursday 25 April. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius. Light rain changing to sunny intervals by late morning. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Thursday 25 April. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius. Light rain changing to sunny intervals by late morning. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Friday 26 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Friday 26 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Saturday 27 April. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Saturday 27 April. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Sunday 28 April. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Sunday 28 April. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Monday 29 April. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Cloudy changing to sunny intervals by early evening. Sunrise: ; Sunset: . UV: Moderate;Monday 29 April. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Cloudy changing to sunny intervals by early evening. Sunrise: ; Sunset: . UV: Moderate;
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Tuesday 30 April. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Light showers changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: Moderate;Tuesday 30 April. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Light showers changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: Moderate;
Seven day forecast for Carmarthen
| Time | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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12°
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12°
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12°
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11°
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10°
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8°
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6°
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5°
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5°
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10° | 11° | 10° | 9° | 8° | 7° | 5° | 4° | 3° |
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N
8
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N
6
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NNW
9
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NNW
10
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NNW
8
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NNW
4
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NW
4
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NW
4
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NW
5
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13 | 10 | 16 | 17 | 16 | 14 | 13 | 11 | 11 |
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VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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63% | 54% | 51% | 53% | 57% | 68% | 76% | 79% | 82% |
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UV
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4 | 3 | 2 | 2 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | 10% | 10% | 10% | 10% | 40% | 50% | <5% | <5% | <5% | <5% | <5% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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5°
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4°
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4°
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5°
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5°
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5°
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6°
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6°
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7°
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9°
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10°
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10°
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11°
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11°
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11°
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11°
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10°
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10°
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10°
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9°
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8°
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7°
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6°
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6°
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3° | 3° | 3° | 4° | 4° | 4° | 5° | 5° | 6° | 7° | 8° | 8° | 9° | 9° | 8° | 9° | 8° | 9° | 8° | 7° | 7° | 5° | 4° | 5° |
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NW
5
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NW
4
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NW
3
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NW
2
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WNW
2
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WSW
2
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W
3
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W
3
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WNW
5
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NW
7
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NW
8
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NW
9
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NNW
9
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NNW
10
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NNW
10
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NNW
11
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NNW
11
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NNW
9
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NNW
9
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NNW
8
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NNW
6
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NNW
5
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NNW
6
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NNW
4
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12 | 11 | 10 | 8 | 8 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 19 | 18 | 19 | 19 | 16 | 16 | 14 | 13 | 13 | 13 | 12 |
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VG | VG | VG | VG | VG | G | G | G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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81% | 83% | 84% | 87% | 88% | 87% | 87% | 87% | 85% | 72% | 66% | 62% | 58% | 58% | 58% | 57% | 56% | 55% | 57% | 60% | 67% | 75% | 79% | 80% |
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UV
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- | - | - | - | - | - | - | 1 | 1 | 2 | 3 | 4 | 4 | 5 | 4 | 4 | 3 | 2 | 2 | 1 | 1 | - | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | 10% | 10% | 10% | 20% | 10% | 10% | 10% |
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5°
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5°
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5°
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5°
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9°
|
9°
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10°
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10°
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8°
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4° | 4° | 3° | 4° | 7° | 7° | 9° | 8° | 6° |
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N
4
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N
4
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NNE
4
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NE
5
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ESE
7
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E
8
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E
5
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NE
6
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NE
7
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10 | 10 | 10 | 11 | 14 | 14 | 12 | 11 | 12 |
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VG | VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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81% | 82% | 86% | 84% | 70% | 65% | 60% | 63% | 74% |
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UV
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- | - | - | 1 | 3 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | 20% | 10% | 10% |
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6°
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6°
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5°
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9°
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11°
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12°
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10°
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8°
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4° | 3° | 3° | 7° | 9° | 9° | 8° | 5° |
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NE
7
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NE
8
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NE
8
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ENE
10
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NE
10
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NE
11
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NNE
10
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NNE
10
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13 | 14 | 15 | 19 | 20 | 20 | 18 | 18 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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76% | 78% | 79% | 68% | 56% | 57% | 66% | 78% |
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UV
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- | - | 1 | 3 | 5 | 3 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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20% | 20% | 10% | 20% | 20% | 10% | 10% | <5% |
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7°
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7°
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7°
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9°
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11°
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11°
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10°
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7°
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5° | 4° | 4° | 6° | 8° | 9° | 8° | 5° |
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NNE
11
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N
12
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N
12
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N
14
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N
14
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NNW
14
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NW
10
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WNW
7
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19 | 20 | 21 | 25 | 26 | 26 | 17 | 11 |
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G | G | G | VG | VG | VG | VG | VG |
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Humidity
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79% | 80% | 82% | 72% | 64% | 63% | 67% | 85% |
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UV
|
- | - | 1 | 3 | 5 | 3 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
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7°
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7°
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8°
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11°
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12°
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12°
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11°
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9°
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6° | 5° | 7° | 8° | 9° | 10° | 9° | 7° |
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WSW
7
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WSW
7
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SW
7
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SW
11
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SSW
13
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SSW
11
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SSW
10
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S
9
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10 | 11 | 12 | 21 | 24 | 22 | 18 | 16 |
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VG | G | VG | VG | VG | VG | VG | VG |
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Humidity
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85% | 87% | 83% | 70% | 64% | 63% | 68% | 80% |
|
UV
|
- | - | 1 | 3 | 5 | 3 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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20% | 20% | 30% | 30% | 20% | 20% | 10% | 10% |
|
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9°
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8°
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8°
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11°
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13°
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13°
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13°
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10°
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6° | 6° | 6° | 8° | 11° | 11° | 11° | 9° |
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SSE
10
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SE
10
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ESE
10
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SE
12
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S
13
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S
11
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S
9
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SSW
8
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18 | 18 | 18 | 22 | 24 | 21 | 15 | 14 |
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VG | G | G | VG | VG | VG | VG | VG |
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Humidity
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84% | 86% | 87% | 75% | 64% | 64% | 69% | 79% |
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UV
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- | - | 1 | 3 | 5 | 3 | 1 | - |
Our weather symbols tell you the weather conditions for any given hour in the day or night. This means that the symbol for 9am shows you what you will see from 9am to 10am.
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail or 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.
Forecast row information
UK video forecast
Wales weather forecast
Headline:
Dry for most with sunny spells.
Today:
A chilly but bright start with any isolated fog patches clearing quickly. Sunny spells through the afternoon with the chance of the odd shower in the south. Temperatures around average. Maximum temperature 14 °C.
Tonight:
Staying dry for most overnight with any remaining showers easing. Plenty of lengthy clear spells, and light winds, allowing temperatures to drop with frost in places. Minimum temperature 2 °C.
Thursday:
Another chilly start on Thursday, but staying dry for most with prolonged sunny intervals, although the odd shower still possible. Temperatures around average. Maximum temperature 15 °C.
Outlook for Friday to Sunday:
Showers becoming more widespread through Friday before longer spells of rain arrive from the southwest on Saturday and Sunday. Temperatures generally around average, and turning windier over the weekend.
Updated:
UK long range weather forecast
The weekend's rain probably clearing east and northeast to leave a drier day on Monday, although the chance of showers and even thunderstorms remains. Cloudier, wetter weather is likely to quickly arrive into the west, and slide east across southern areas early next week, such that the majority of the week will be characterised by wetter weather in southern UK, drier weather in northern, especially northwestern UK, and a chance of rain or even thundery showers for a time in the east. Temperatures likely to trend upwards, with the chance of a warm to very warm spell in some southern and eastern parts, before conditions probably turn drier, cooler and more settled from the west towards the end of the period.
Updated:
In this period, the chances of unsettled weather are slightly less than usual in the north and about the same as usual further south. Therefore, some spells of wetter weather are likely for all, but perhaps especially southern areas with the driest conditions probably further north. Temperatures probably near average though with some cooler interludes possible.. Also worth noting that average temperatures themselves rise by around 1C per week at this time of year.
Updated:
