Belfast weather by month & the best time to visit
United Kingdom · city break · oceanic / maritime climate
The best time to visit Belfast is July — its sunniest month (Sunshine Score 56/100), with August and June close behind. Belfast averages about 1,263 hours of sunshine a year. Daytime highs around 18°C / 64°F and roughly 99 mm of rain in July.
When is the best time to visit Belfast?
For sunshine, the best time to visit Belfast is July, then August and June. The dullest month is January (0/100, 93 mm of rain). The full month-by-month picture is in the table below.
How sunny is Belfast?
Belfast isn't a sunny place by world standards: about 1,263 hours of sunshine a year. 56 Sunshine Score points separate July (56) from January (0), so the month you pick matters. It ranks #35 of 48 destinations in United Kingdom for annual sunshine, below the national median of 1,345 hours. The year's 1,068 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 6° / 43°F | 3° / 37°F | 93 mm | 0 |
| February | 0 | 7° / 45°F | 2° / 36°F | 74 mm | 1 |
| March | 0 | 8° / 46°F | 3° / 37°F | 76 mm | 1 |
| April | 19 | 11° / 52°F | 5° / 41°F | 62 mm | 3 |
| May | 36 | 14° / 57°F | 7° / 45°F | 77 mm | 4 |
| June | 52 | 17° / 63°F | 10° / 50°F | 90 mm | 4 |
| July | 56 | 18° / 64°F | 11° / 52°F | 99 mm | 4 |
| August | 55 | 18° / 64°F | 11° / 52°F | 106 mm | 3 |
| September | 47 | 16° / 61°F | 10° / 50°F | 82 mm | 2 |
| October | 27 | 13° / 55°F | 8° / 46°F | 109 mm | 1 |
| November | 6 | 9° / 48°F | 5° / 41°F | 105 mm | 0 |
| December | 0 | 7° / 45°F | 3° / 37°F | 95 mm | 0 |
Nearest destinations
Head-to-head
How Belfast compares month by month: Belfast vs Glasgow · Belfast vs Dublin · Belfast vs Castletown · Belfast vs Charlestown · all comparisons
Belfast: questions and answers
What kind of destination is Belfast?
Belfast is a city break in United Kingdom with a oceanic / maritime climate.
How many hours of sunshine does Belfast get a year?
Belfast gets about 1,263 hours of sunshine a year, at its best around July.
When is the best time to visit Belfast?
The sunniest time to visit Belfast is July, when the Sunshine Score peaks at 56/100 (with August and June close behind). Expect daytime highs around 18°C / 64°F.
What is the least sunny month in Belfast?
January is the least sunny month in Belfast, scoring 0/100 with about 93 mm of rain.
How strong is the sun in Belfast?
The typical midday UV index in Belfast peaks around 4 (moderate) in May, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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