Belfast weather

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The weather guide for Northern Ireland (Belfast) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

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  • Best time to go to Belfast
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

When is the best time to go to Belfast?

The best time to go to Belfast is June, July and August based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

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Max Day Temperature (°F)

  • 45°F maximum daytime temperature in January in Belfast45
    Jan
  • 45°F maximum daytime temperature in February in Belfast45
    Feb
  • 48°F maximum daytime temperature in March in Belfast48
    Mar
  • 52°F maximum daytime temperature in April in Belfast52
    Apr
  • 57°F maximum daytime temperature in May in Belfast57
    May
  • 63°F maximum daytime temperature in June in Belfast63
    Jun
  • 64°F maximum daytime temperature in July in Belfast64
    Jul
  • 64°F maximum daytime temperature in August in Belfast64
    Aug
  • 61°F maximum daytime temperature in September in Belfast61
    Sep
  • 55°F maximum daytime temperature in October in Belfast55
    Oct
  • 48°F maximum daytime temperature in November in Belfast48
    Nov
  • 46°F maximum daytime temperature in December in Belfast46
    Dec

Hours of Sunshine (daily)

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

Best time to go for the weather

Metric (°C)  |  Imperial (°F)

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More about the UK

Which is the hottest month in Belfast?

The hottest time of year in Belfast is normally July. Expect maximum daytime temperatures to reach 64°F.

Which month has the most rain in Belfast?

In terms of rainfall, January is usually the wettest month in Belfast with 4.0 inches on average. There are normally 20 days in January with some rain.

When is it sunniest in Belfast?

The sunniest time of year in Belfast is normally May with bright sunshine on average for 37% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Belfast?

The sea is usually at its warmest in Belfast in September when the water temperature reaches 57°F.

Compare Belfast weather with the USA

Below the Belfast weather chart shows average maximum daytime temperature for Belfast, Northern Ireland, UK and the USA (Washington).

Maximum daytime temperature (°F)

Belfast, Northern Ireland, UK
USA (Washington)
45
41
45
45
48
55
52
66
57
75
63
84
64
88
64
86
61
79
55
68
48
57
46
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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