Carmarthenshire, United Kingdom Weather

  1. Carmarthenshire, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Carmarthenshire over the next 12 hours
  7. Temperature and possibility of rain in Carmarthenshire in the coming days
  8. Rainfall in Carmarthenshire in the coming days
  9. Carmarthenshire Weather Summary
  10. Weather averages by month
  11. Carmarthenshire's weather
  12. Frequently asked questions
  13. Comments
Carmarthenshire, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
21°C
69.8°F
°C °F

Condition: Overcast

Pressure: 1,016 hPa

Feel like: 20 °C

Temperature: 21°C

Cloud: 100%

Humidity: 54%

Wind: SSW - 12 km/h

Visibility: 38.7 km

Weather forecast

Sun
09 Aug
13°C / 21°C
Overcast
Mon
10 Aug
13°C / 27°C
Partly Cloudy
Tue
11 Aug
15°C / 31°C
Overcast
Wed
12 Aug
13°C / 24°C
Drizzle
Thu
13 Aug
16°C / 23°C
Drizzle
Hourly forecast today:
12:00 PM
11° / 21°
11° / 21°
Overcast
54% 26 km/h
13:00 PM
10° / 21°
10° / 21°
Overcast
50% 26 km/h
14:00 PM
8° / 22°
8° / 22°
Overcast
40% 27 km/h
15:00 PM
7° / 22°
7° / 22°
Overcast
38% 25 km/h
16:00 PM
9° / 22°
9° / 22°
Partly Cloudy
42% 21 km/h
17:00 PM
8° / 22°
8° / 22°
Clear Sky
41% 16 km/h
18:00 PM
9° / 22°
9° / 22°
Clear Sky
45% 11 km/h
19:00 PM
13° / 20°
13° / 20°
Clear Sky
63% 8 km/h
20:00 PM
12° / 18°
12° / 18°
Clear Sky
67% 14 km/h
21:00 PM
13° / 17°
13° / 17°
Clear Sky
79% 12 km/h
22:00 PM
12° / 15°
12° / 15°
Clear Sky
85% 8 km/h

30 Day Averages and Extremes

  • Average high 19.87°C
  • Average low 11.9°C
  • Hottest day 31°C (11 August 2026)
  • Coldest day 0°C (21 August 2026)
  • Average humidity 68.9%
  • Days with precipitation 17 days
  • Highest precipitation 73 mm (03 August 2026)

Yesterday's Data

  • Max: 22°C
  • Min: 10°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

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 21ºC to 24ºC (69.8ºF to 75.2ºF), you might consider wearing:
- Sunglasses
- Comfortable sandals or sneakers
- Shorts or lightweight trousers
- Sun hat or cap

Temperature

Early
8°C / 11°C
Morning
11°C / 17°C
Afternoon
7°C / 22°C
Evening
13°C / 17°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 433
  • CO 143
  • NH3 2
  • NO2 1
  • O3 79
  • PM10 8
  • PM25 5
  • SO2 0
  • CH4 1,375

Sunrise / Sunset

04:52
19:53