6 to 17°C
temperature
1740 hours
sunshine per day
553 mm
rain
137 days
dry
219 days
rain
9 days
snow

Climate of Belfast

The region Belfast has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Belfast is 12° degrees and there is about 553 mm of rain in a year. It is dry for 100 days a year with an average humidity of 88% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 6°C and 17°C
  • Night:the average nighttime temperature is between 2°C and 11°C
  • Rain: it rains 219 days and there is a total of approximately 553 mm rainfall
  • Snow: it snows an average of 9 days per year
  • Sun hours: throughout the year there are 1740 sun hours
Maximum temperature: between 6°C and 17°C
Warmest month: 17°C in July
Coldest month: 6°C in January
Night temperature: between 2°C and 11°C
Dry days: 137 days
Days with rain: 219 days
Days with snow: 9 days
Total rain sum: 553 mm
Hours of sunshine: 1740 hours

Temperature graph

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

Precipitation graph

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

Climate table of Belfast

In this climate table you can see at a glance what the average weather per month is for Belfast. 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 Belfast might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 6 7 9 11 14 16 17 17 15 13 9 7
Night temp. (°C) 2 2 3 4 7 9 11 11 9 8 5 3
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 42 39 48 34 36 51 55 54 36 48 60 50
Days with rain 15 15 17 17 18 19 24 26 17 17 18 16
Days with snow 3 3 2 - - - - - - - - 1
Dry days 13 10 12 13 13 11 7 5 13 14 12 14
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 3 3 4 6 6 7 6 5 5 3 4 4
Wind force (Bft) 3 3 3 3 3 3 3 3 3 3 3 3
UV-index 2 2 2 3 3 4 3 4 3 3 2 2

Best time to visit Belfast

For visiting Belfast, the best time to visit is in June. In this period you have a mild temperature and little precipitation. The highest average temperature in the Belfast region is 17°C in July and the lowest is 6°C in January.

Climate of Belfast by month

What is the average climate in a given month for Belfast? 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.

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