Carmarthenshire, United Kingdom Weather
- Carmarthenshire, United Kingdom Weather
- Current conditions
- Weather forecast
- Averages and extremes
- Yesterday's Data
- Temperature and possibility of rain in Carmarthenshire over the next 12 hours
- Temperature and possibility of rain in Carmarthenshire in the coming days
- Rainfall in Carmarthenshire in the coming days
- Carmarthenshire Weather Summary
- Weather averages by month
- Carmarthenshire's weather
- Frequently asked questions
- Comments
Current conditions
Updated:
Moderate Rain
15°C
°C
°F
Condition: Moderate Rain
Pressure: 1,010 hPa
Feel like: 15 °C
Temperature: 15°C
Cloud: 100%
Humidity: 98%
Wind: SSW - 11 km/h
Visibility: 5.88 km
Sat
20 Jun
10°C / 26°C
Overcast
Sun
21 Jun
18°C / 28°C
Slight Thunderstorm
Mon
22 Jun
15°C / 27°C
Mainly Clear
Tue
23 Jun
11°C / 24°C
Clear Sky
Wed
24 Jun
16°C / 26°C
Slight Thunderstorm
Hourly forecast today:
19:00 PM
15° / 15°
15° / 15°
Moderate Rain
98%
21 km/h
20:00 PM
15° / 15°
15° / 15°
Slight Rain
98%
18 km/h
21:00 PM
15° / 15°
15° / 15°
Slight Rain
99%
16 km/h
22:00 PM
15° / 15°
15° / 15°
Slight Rain
99%
23 km/h
23:00 PM
15° / 15°
15° / 15°
Drizzle
99%
27 km/h
00:00 AM
15° / 15°
15° / 15°
Overcast
100%
30 km/h
01:00 AM
15° / 15°
15° / 15°
Drizzle
99%
34 km/h
02:00 AM
15° / 15°
15° / 15°
Drizzle
100%
30 km/h
03:00 AM
15° / 15°
15° / 15°
Overcast
100%
26 km/h
04:00 AM
15° / 15°
15° / 15°
Fog
100%
24 km/h
05:00 AM
15° / 15°
15° / 15°
Drizzle
99%
22 km/h
30 Day Averages and Extremes
- Average high 18.33°C
- Average low 11.73°C
- Hottest day 30°C (26 June 2026)
- Coldest day 0°C (02 July 2026)
- Average humidity 75.47%
- Days with precipitation 25 days
- Highest precipitation 90 mm (05 June 2026)
Yesterday's Data
- Max: 17°C
- Min: 15°C
- Total Precipitation: 9 mm
Temperature and possibility of rain in Carmarthenshire over the next 12 hours
Temperature and possibility of rain in Carmarthenshire in the coming days
Rainfall in Carmarthenshire in the coming days
Carmarthenshire Climate Summary
Carmarthenshire features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.04ºC (51.87ºF), which is about 0.29% higher than the national average for United Kingdom. Annually, the city experiences approximately 50.37 millimeters (1.98 inches) of rainfall, spread across 133.64 rainy days, accounting for 36.61% of the year.
| Longitude | 51.8572309 |
| Latitude | -4.3115959 |
| Yearly high temperature | 12.62ºC (54.72ºF) |
| Yearly low temperature | 7.83ºC (46.09ºF) |
| Hottest month | June 16.62ºC (61.92ºF) |
| Coldest month | March 4.06ºC (39.31ºF) |
| Yearly precip | 50.37mm (1.98in) |
| Days with rainfall | 133.64 days (36.61%) |
| Driest month | May (82.57%) |
| Wettest month | December (86.09%) |
Weather averages by month
| Month | High / Low (°C) | Rain |
|---|---|---|
| January | 7.44° / 4.01° | 13.09 days |
| February | 7.64° / 3.84° | 13.0 days |
| March | 9.35° / 4.06° | 9.45 days |
| April | 11.88° / 5.76° | 7.64 days |
| May | 14.16° / 7.89° | 8.0 days |
| June | 16.62° / 10.61° | 9.82 days |
| July | 18.01° / 12.4° | 10.0 days |
| August | 17.57° / 12.79° | 12.09 days |
| September | 16.24° / 11.18° | 10.73 days |
| October | 13.61° / 9.44° | 11.91 days |
| November | 10.31° / 6.65° | 13.18 days |
| December | 8.59° / 5.31° | 14.73 days |
Carmarthenshire's weather
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Frequently asked questions
1. What is the hottest month in Carmarthenshire?
June has the highest average monthly temperature (daily mean of 16.62ºC) and March are the coolest (daily mean of 4.06ºC).
2. What should I wear in Carmarthenshire today?
For today's warm weather in Carmarthenshire, with temperatures between 17ºC to 20ºC (62.6ºF to 68.0ºF), you might consider wearing:
- Comfortable sandals or sneakers
- Sun hat or cap
- Sunscreen (if spending time outdoors)
- Cotton or linen fabrics
Temperature
Early
14°C / 15°C
Morning
15°C / 16°C
Afternoon
16°C / 16°C
Evening
15°C / 15°C
Air quality
Good
Satisfactory air quality, minimal pollution, low risk
- CO2 442
- CO 93
- NH3 0
- NO2 2
- O3 50
- PM10 8
- PM25 4
- SO2 0
- CH4 1,354
Sunrise / Sunset
03:58
20:39