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:
Overcast
23°C
°C
°F
Condition: Overcast
Pressure: 1,023 hPa
Feel like: 24 °C
Temperature: 23°C
Cloud: 100%
Humidity: 65%
Wind: NNW - 7 km/h
Visibility: 29.72 km
Mon
22 Jun
17°C / 28°C
Slight Thunderstorm
Tue
23 Jun
15°C / 29°C
Slight Thunderstorm
Wed
24 Jun
18°C / 31°C
Slight Thunderstorm
Thu
25 Jun
16°C / 21°C
Drizzle
Fri
26 Jun
16°C / 19°C
Drizzle
Hourly forecast today:
19:00 PM
16° / 23°
16° / 23°
Overcast
65%
15 km/h
20:00 PM
15° / 20°
15° / 20°
Clear Sky
74%
25 km/h
21:00 PM
14° / 19°
14° / 19°
Clear Sky
74%
24 km/h
22:00 PM
13° / 18°
13° / 18°
Clear Sky
75%
21 km/h
23:00 PM
14° / 18°
14° / 18°
Clear Sky
76%
19 km/h
00:00 AM
14° / 18°
14° / 18°
Clear Sky
77%
16 km/h
01:00 AM
14° / 18°
14° / 18°
Clear Sky
81%
16 km/h
02:00 AM
14° / 18°
14° / 18°
Clear Sky
82%
15 km/h
03:00 AM
14° / 17°
14° / 17°
Clear Sky
83%
15 km/h
04:00 AM
14° / 16°
14° / 16°
Mainly Clear
86%
13 km/h
05:00 AM
15° / 18°
15° / 18°
Clear Sky
79%
14 km/h
30 Day Averages and Extremes
- Average high 18.0°C
- Average low 11.87°C
- Hottest day 31°C (21 June 2026)
- Coldest day 0°C (04 July 2026)
- Average humidity 75.77%
- Days with precipitation 23 days
- Highest precipitation 69 mm (06 June 2026)
Yesterday's Data
- Max: 24°C
- Min: 13°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 very hot weather in Carmarthenshire, with the high temperatures above 31ºC (87.8ºF), consider wearing:
- Light, natural fabrics (like cotton or linen)
- Airy sandals or flip-flops
- UV-blocking sunglasses
- Ultra-thin, breathable socks
Temperature
Early
11°C / 14°C
Morning
13°C / 19°C
Afternoon
14°C / 23°C
Evening
14°C / 19°C
Air quality
Good
Satisfactory air quality, minimal pollution, low risk
- CO2 411
- CO 109
- NH3 2
- NO2 1
- O3 68
- PM10 5
- PM25 3
- SO2 0
- CH4 1,389
Sunrise / Sunset
03:58
20:39