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
15°C
°C
°F
Condition: Overcast
Pressure: 1,022 hPa
Feel like: 16 °C
Temperature: 15°C
Cloud: 100%
Humidity: 96%
Wind: SW - 5 km/h
Visibility: 13.3 km
Thu
24 Sep
9°C / 15°C
Moderate Drizzle
Fri
25 Sep
8°C / 16°C
Drizzle
Sat
26 Sep
7°C / 16°C
Slight Rain
Sun
27 Sep
7°C / 15°C
Fog
Mon
28 Sep
9°C / 18°C
Slight Thunderstorm
Hourly forecast today:
04:00 AM
14° / 15°
14° / 15°
Overcast
96%
11 km/h
05:00 AM
14° / 15°
14° / 15°
Overcast
94%
20 km/h
06:00 AM
15° / 15°
15° / 15°
Overcast
96%
19 km/h
07:00 AM
14° / 16°
14° / 16°
Overcast
93%
19 km/h
08:00 AM
15° / 16°
15° / 16°
Drizzle
95%
19 km/h
09:00 AM
15° / 16°
15° / 16°
Drizzle
95%
19 km/h
10:00 AM
13° / 15°
13° / 15°
Drizzle
91%
44 km/h
11:00 AM
13° / 15°
13° / 15°
Partly Cloudy
84%
50 km/h
12:00 PM
11° / 16°
11° / 16°
Partly Cloudy
75%
50 km/h
13:00 PM
10° / 16°
10° / 16°
Partly Cloudy
71%
42 km/h
14:00 PM
9° / 16°
9° / 16°
Partly Cloudy
65%
40 km/h
30 Day Averages and Extremes
- Average high 15.87°C
- Average low 9.9°C
- Hottest day 20°C (13 September 2026)
- Coldest day 0°C (06 October 2026)
- Average humidity 81.03%
- Days with precipitation 25 days
- Highest precipitation 77 mm (12 September 2026)
Yesterday's Data
- Max: 16°C
- Min: 11°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 mild weather in Carmarthenshire, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Casual sneakers or loafers
- Comfortable jeans or slacks
- Lightweight sweater or cardigan
- Scarf (optional)
Temperature
Early
15°C / 15°C
Morning
15°C / 16°C
Afternoon
9°C / 16°C
Evening
8°C / 11°C
Air quality
Good
Satisfactory air quality, minimal pollution, low risk
- CO2 440
- CO 146
- NH3 1
- NO2 5
- O3 39
- PM10 5
- PM25 4
- SO2 0
- CH4 1,385
Sunrise / Sunset
06:06
18:11