7 to 18°C
temperature
2172 hours
sunshine per day
426 mm
rain
160 days
dry
202 days
rain
3 days
snow

Climate of Carmarthenshire

The region Carmarthenshire has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Carmarthenshire is 13° degrees and there is about 425 mm of rain in a year. It is dry for 117 days a year with an average humidity of 85% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 7°C and 18°C
  • Night:the average nighttime temperature is between 4°C and 13°C
  • Rain: it rains 202 days and there is a total of approximately 426 mm rainfall
  • Snow: it snows an average of 3 days per year
  • Sun hours: throughout the year there are 2172 sun hours
Maximum temperature: between 7°C and 18°C
Warmest month: 18°C in July
Coldest month: 7°C in January
Night temperature: between 4°C and 13°C
Dry days: 160 days
Days with rain: 202 days
Days with snow: 3 days
Total rain sum: 426 mm
Hours of sunshine: 2172 hours

Do you want to go to Carmarthenshire?

These are the travel companies where you can book a trip to Carmarthenshire:

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Carmarthenshire.

Precipitation graph

This graph shows the average amount of rainfall per month for Carmarthenshire.

Climate table of Carmarthenshire

In this climate table you can see at a glance what the average weather per month is for Carmarthenshire. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Carmarthenshire might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 7 8 10 12 14 17 18 17 16 14 11 9
Night temp. (°C) 4 4 4 6 8 11 13 13 12 10 7 6
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 46 28 37 27 22 25 32 29 31 42 53 54
Days with rain 20 15 15 13 15 15 19 19 15 17 19 20
Days with snow 1 1 - - - - - - - - - 1
Dry days 10 12 16 17 16 15 12 12 15 14 11 10
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 4 6 8 8 8 8 7 7 4 4 4
Wind force (Bft) 4 4 3 3 3 3 3 3 3 3 4 4
UV-index 2 2 2 3 4 4 4 4 4 3 2 2

Best time to visit Carmarthenshire

For visiting Carmarthenshire, the best time to visit is in July. In this period you have a pleasant temperature and almost no precipitation. The highest average temperature in the Carmarthenshire region is 18°C in July and the lowest is 7°C in January.

Climate of Carmarthenshire by month

What is the average climate in a given month for Carmarthenshire? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Carmarthenshire weather experiences

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