Northern Ireland weather by month

Check out Northern Ireland weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °C
7°C maximum daytime temperature in January in Belfast7
7°C maximum daytime temperature in February in Belfast7
9°C maximum daytime temperature in March in Belfast9
11°C maximum daytime temperature in April in Belfast11
14°C maximum daytime temperature in May in Belfast14
17°C maximum daytime temperature in June in Belfast17
18°C maximum daytime temperature in July in Belfast18
18°C maximum daytime temperature in August in Belfast18
16°C maximum daytime temperature in September in Belfast16
13°C maximum daytime temperature in October in Belfast13
9°C maximum daytime temperature in November in Belfast9
8°C maximum daytime temperature in December in Belfast8
Hours of sunshine (daily)
Days with some rainfall
20 days with some rainfall in January in Belfast20
16 days with some rainfall in February in Belfast16
19 days with some rainfall in March in Belfast19
15 days with some rainfall in April in Belfast15
16 days with some rainfall in May in Belfast16
15 days with some rainfall in June in Belfast15
15 days with some rainfall in July in Belfast15
17 days with some rainfall in August in Belfast17
17 days with some rainfall in September in Belfast17
19 days with some rainfall in October in Belfast19
19 days with some rainfall in November in Belfast19
20 days with some rainfall in December in Belfast20
Sea temperature °C
9°C sea temperature in January in Belfast9
8°C sea temperature in February in Belfast8
7°C sea temperature in March in Belfast7
8°C sea temperature in April in Belfast8
9°C sea temperature in May in Belfast9
11°C sea temperature in June in Belfast11
13°C sea temperature in July in Belfast13
13°C sea temperature in August in Belfast13
14°C sea temperature in September in Belfast14
13°C sea temperature in October in Belfast13
12°C sea temperature in November in Belfast12
10°C sea temperature in December in Belfast10

More about Northern Ireland

Northern Ireland by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Northern Ireland (Belfast) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Northern Ireland destinations

Below are average maximum temperatures at popular countries, regions and places in Northern Ireland for next month - March. Select a destination to see the climate guide for all months of the year.

All Northern Ireland destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the UK

Compare Northern Ireland with the UK

Below the Northern Ireland chart shows average maximum daytime temperature for Nothern Ireland (Belfast) and the UK (London).

Maximum daytime temperature (°C)

Nothern Ireland (Belfast)
UK (London)
7
7
7
7
9
10
11
13
14
17
17
20
18
22
18
22
16
19
13
15
9
10
8
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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