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Belfast Monthly Climate Averages
Belfast is located in oceanic climate that can be described as high humidity and moderate seasonal temperature fluctuations warm summer and soft but windy winter.
To help you choose the best time to travel, you can find climate data below on the weather in Belfast .
Month | t°C day |
t°C night |
mm rain |
daylight |
January | +7.9 | +2.2 | 90 | 8.7h |
February | +8.3 | +2.1 | 65 | 10.4h |
March | +10.2 | +3.5 | 78 | 12.5h |
April | +12.4 | +4.7 | 65 | 14.8h |
May | +15.4 | +6.9 | 63 | 16.9h |
June | +17.9 | +9.8 | 67 | 18.1h |
July | +19.7 | +11.7 | 66 | 17.5h |
August | +19.3 | +11.5 | 86 | 15.5h |
September | +17.1 | +9.6 | 77 | 13.3h |
October | +13.6 | +7 | 98 | 11.1h |
November | +10.3 | +4.2 | 96 | 9.1h |
December | +8.2 | +2.3 | 92 | 8.1h |
Best time with the soft weather for the sightseeing and long walks in Belfast are June, July, August.
Temperature in Belfast
The table shows that the hottest months in Belfast are July and August, during which the average daytime temperature reaches +19.7°C and the nighttime temperature falls to +11.7°C.
The coldest months are January and December, when the daily average temperature falls to +7.9°C, and drops to +2.2°C during the night.
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Sea temperature
The month with the highest average monthly temperature in the North Channel on the beaches of Belfast is August with 15.8 degrees.
The coldest water can be found in March — 3.2degrees C.
Precipitation
The largest amount of precipitation falls on average in October and November, up to 98mm, and the least in May and April — up to 63mm.