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:
16°C
60.8°F
°C °F

Condition: Overcast

Pressure: 1,023 hPa

Feel like: 17 °C

Temperature: 16°C

Cloud: 95%

Humidity: 95%

Wind: NNE - 4 km/h

Visibility: 15.48 km

Weather forecast

Wed
23 Sep
7°C / 18°C
Drizzle
Thu
24 Sep
11°C / 16°C
Drizzle
Fri
25 Sep
5°C / 17°C
Fog
Sat
26 Sep
5°C / 17°C
Drizzle
Sun
27 Sep
13°C / 15°C
Moderate Rain
Hourly forecast today:
22:00 PM
15° / 16°
15° / 16°
Overcast
95% 8 km/h
23:00 PM
15° / 16°
15° / 16°
Overcast
96% 3 km/h
00:00 AM
15° / 16°
15° / 16°
Overcast
96% 3 km/h
01:00 AM
15° / 16°
15° / 16°
Overcast
97% 3 km/h
02:00 AM
15° / 15°
15° / 15°
Overcast
98% 3 km/h
03:00 AM
15° / 15°
15° / 15°
Overcast
98% 6 km/h
04:00 AM
15° / 15°
15° / 15°
Overcast
97% 7 km/h
05:00 AM
15° / 15°
15° / 15°
Slight Rain
97% 12 km/h
06:00 AM
14° / 14°
14° / 14°
Overcast
98% 13 km/h
07:00 AM
14° / 15°
14° / 15°
Overcast
96% 6 km/h
08:00 AM
14° / 16°
14° / 16°
Partly Cloudy
91% 21 km/h

30 Day Averages and Extremes

  • Average high 15.87°C
  • Average low 9.5°C
  • Hottest day 20°C (13 September 2026)
  • Coldest day 0°C (05 October 2026)
  • Average humidity 79.97%
  • Days with precipitation 25 days
  • Highest precipitation 77 mm (12 September 2026)

Yesterday's Data

  • Max: 19°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

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 13ºC to 16ºC (55.4ºF to 60.8ºF), consider wearing:
- Sun hat (if spending time outdoors)
- Casual sneakers or loafers
- Scarf (optional)
- Long-sleeve shirt or blouse

Temperature

Early
13°C / 13°C
Morning
15°C / 16°C
Afternoon
15°C / 19°C
Evening
15°C / 16°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 455
  • CO 152
  • NH3 3
  • NO2 5
  • O3 48
  • PM10 4
  • PM25 3
  • SO2 0
  • CH4 1,499

Sunrise / Sunset

06:04
18:13