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:
Clear Sky
20°C
°C
°F
Condition: Clear Sky
Pressure: 1,025 hPa
Feel like: 18 °C
Temperature: 20°C
Cloud: 0%
Humidity: 54%
Wind: NNW - 20 km/h
Visibility: 48.74 km
Tue
21 Jul
13°C / 17°C
Overcast
Wed
22 Jul
11°C / 23°C
Overcast
Thu
23 Jul
11°C / 23°C
Overcast
Fri
24 Jul
9°C / 22°C
Drizzle
Sat
25 Jul
15°C / 20°C
Drizzle
Hourly forecast today:
16:00 PM
11° / 20°
11° / 20°
Clear Sky
54%
42 km/h
17:00 PM
11° / 19°
11° / 19°
Clear Sky
60%
41 km/h
18:00 PM
12° / 18°
12° / 18°
Clear Sky
67%
39 km/h
19:00 PM
12° / 17°
12° / 17°
Clear Sky
73%
34 km/h
20:00 PM
12° / 16°
12° / 16°
Clear Sky
80%
32 km/h
21:00 PM
13° / 15°
13° / 15°
Clear Sky
86%
31 km/h
22:00 PM
13° / 15°
13° / 15°
Clear Sky
90%
28 km/h
23:00 PM
14° / 15°
14° / 15°
Clear Sky
90%
30 km/h
00:00 AM
14° / 15°
14° / 15°
Clear Sky
92%
29 km/h
01:00 AM
13° / 15°
13° / 15°
Clear Sky
92%
23 km/h
02:00 AM
13° / 14°
13° / 14°
Clear Sky
92%
24 km/h
30 Day Averages and Extremes
- Average high 21.53°C
- Average low 12.8°C
- Hottest day 32°C (09 July 2026)
- Coldest day 0°C (02 August 2026)
- Average humidity 65.47%
- Days with precipitation 11 days
- Highest precipitation 28 mm (30 July 2026)
Yesterday's Data
- Max: 23°C
- Min: 14°C
- Total Precipitation: 0 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 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- Shorts or lightweight trousers
- Comfortable sandals or sneakers
- Sunscreen (if spending time outdoors)
- Cotton or linen fabrics
Temperature
Early
10°C / 14°C
Morning
8°C / 20°C
Afternoon
11°C / 21°C
Evening
13°C / 15°C
Air quality
Good
Satisfactory air quality, minimal pollution, low risk
- CO2 437
- CO 101
- NH3 0
- NO2 0
- O3 66
- PM10 6
- PM25 4
- SO2 0
- CH4 1,354
Sunrise / Sunset
04:24
20:22