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:
9°C
48.2°F
°C °F

Condition: Clear Sky

Pressure: 1,022 hPa

Feel like: 8 °C

Temperature: 9°C

Cloud: 0%

Humidity: 89%

Wind: NNE - 3 km/h

Visibility: 27.98 km

Weather forecast

Sat
08 Aug
14°C / 25°C
Drizzle
Sun
09 Aug
14°C / 21°C
Overcast
Mon
10 Aug
14°C / 27°C
Overcast
Tue
11 Aug
18°C / 25°C
Overcast
Wed
12 Aug
14°C / 23°C
Overcast
Hourly forecast today:
03:00 AM
8° / 9°
8° / 9°
Clear Sky
89% 8 km/h
04:00 AM
7° / 9°
7° / 9°
Clear Sky
91% 7 km/h
05:00 AM
7° / 8°
7° / 8°
Clear Sky
92% 7 km/h
06:00 AM
9° / 11°
9° / 11°
Clear Sky
86% 5 km/h
07:00 AM
9° / 12°
9° / 12°
Mainly Clear
82% 6 km/h
08:00 AM
10° / 14°
10° / 14°
Mainly Clear
77% 7 km/h
09:00 AM
11° / 17°
11° / 17°
Mainly Clear
69% 14 km/h
10:00 AM
10° / 18°
10° / 18°
Overcast
61% 20 km/h
11:00 AM
11° / 18°
11° / 18°
Overcast
64% 24 km/h
12:00 PM
11° / 18°
11° / 18°
Drizzle
65% 19 km/h
13:00 PM
10° / 19°
10° / 19°
Overcast
58% 25 km/h

30 Day Averages and Extremes

  • Average high 20.03°C
  • Average low 12.27°C
  • Hottest day 27°C (10 August 2026)
  • Coldest day 0°C (20 August 2026)
  • Average humidity 68.27%
  • Days with precipitation 18 days
  • Highest precipitation 68 mm (03 August 2026)

Yesterday's Data

  • Max: 19°C
  • Min: 8°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:
- Sun hat or cap
- Sunscreen (if spending time outdoors)
- Shorts or lightweight trousers
- Sunglasses

Temperature

Early
8°C / 9°C
Morning
11°C / 17°C
Afternoon
10°C / 19°C
Evening
9°C / 14°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 442
  • CO 131
  • NH3 4
  • NO2 3
  • O3 45
  • PM10 8
  • PM25 4
  • SO2 0
  • CH4 1,457

Sunrise / Sunset

04:51
19:54