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:
Partly Cloudy
18°C
°C
°F
Condition: Partly Cloudy
Pressure: 1,006 hPa
Feel like: 19 °C
Temperature: 18°C
Cloud: 79%
Humidity: 86%
Wind: SSE - 3 km/h
Visibility: 18.3 km
Tue
04 Aug
14°C / 20°C
Drizzle
Wed
05 Aug
11°C / 17°C
Overcast
Thu
06 Aug
10°C / 18°C
Overcast
Fri
07 Aug
11°C / 18°C
Drizzle Dense Intensity
Sat
08 Aug
8°C / 18°C
Fog
Hourly forecast today:
23:00 PM
16° / 18°
16° / 18°
Partly Cloudy
86%
7 km/h
00:00 AM
14° / 18°
14° / 18°
Partly Cloudy
80%
11 km/h
01:00 AM
14° / 18°
14° / 18°
Overcast
76%
6 km/h
02:00 AM
14° / 18°
14° / 18°
Overcast
77%
10 km/h
03:00 AM
14° / 18°
14° / 18°
Overcast
76%
14 km/h
04:00 AM
16° / 17°
16° / 17°
Slight Rain
94%
14 km/h
05:00 AM
18° / 18°
18° / 18°
Drizzle Dense Intensity
98%
28 km/h
06:00 AM
18° / 18°
18° / 18°
Overcast
97%
28 km/h
07:00 AM
18° / 19°
18° / 19°
Overcast
96%
31 km/h
08:00 AM
18° / 19°
18° / 19°
Overcast
96%
35 km/h
09:00 AM
18° / 19°
18° / 19°
Overcast
94%
30 km/h
30 Day Averages and Extremes
- Average high 19.4°C
- Average low 11.73°C
- Hottest day 25°C (02 August 2026)
- Coldest day 0°C (16 August 2026)
- Average humidity 70.53%
- Days with precipitation 19 days
- Highest precipitation 55 mm (03 August 2026)
Yesterday's Data
- Max: 25°C
- Min: 12°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 19ºC to 22ºC (66.2ºF to 71.6ºF), you might consider wearing:
- T-shirt or short-sleeve blouse
- Comfortable sandals or sneakers
- Cotton or linen fabrics
- Light, breathable socks
Temperature
Early
7°C / 12°C
Morning
12°C / 21°C
Afternoon
15°C / 23°C
Evening
15°C / 19°C
Air quality
Good
Satisfactory air quality, minimal pollution, low risk
- CO2 437
- CO 148
- NH3 4
- NO2 3
- O3 73
- PM10 12
- PM25 8
- SO2 0
- CH4 1,424
Sunrise / Sunset
04:44
20:01