Brussels weather by month & the best time to visit
Belgium · city break · oceanic / maritime climate
The best time to visit Brussels is September — its sunniest month (Sunshine Score 78/100), with June and July close behind. Brussels averages about 1,609 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 55 mm of rain in September.
When is the best time to visit Brussels?
For sunshine, the best time to visit Brussels is September, then June and July. The dullest month is January (0/100, 69 mm of rain). The full month-by-month picture is in the table below.
How sunny is Brussels?
Brussels isn't a sunny place by world standards: about 1,609 hours of sunshine a year. 78 Sunshine Score points separate September (78) from January (0), so the month you pick matters. It ranks #3 of 4 destinations in Belgium for annual sunshine, below the national median of 1,637 hours. The year's 763 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 | 5° / 41°F | 0° / 32°F | 69 mm | 0 |
| February | 0 | 6° / 43°F | 0° / 32°F | 60 mm | 1 |
| March | 13 | 10° / 50°F | 2° / 36°F | 55 mm | 2 |
| April | 47 | 15° / 59°F | 5° / 41°F | 38 mm | 3 |
| May | 71 | 19° / 66°F | 8° / 46°F | 59 mm | 4 |
| June | 76 | 22° / 72°F | 12° / 54°F | 63 mm | 5 |
| July | 74 | 24° / 75°F | 14° / 57°F | 75 mm | 5 |
| August | 73 | 23° / 73°F | 13° / 55°F | 79 mm | 4 |
| September | 78 | 20° / 68°F | 10° / 50°F | 55 mm | 3 |
| October | 45 | 15° / 59°F | 7° / 45°F | 63 mm | 2 |
| November | 13 | 10° / 50°F | 4° / 39°F | 69 mm | 1 |
| December | 0 | 6° / 43°F | 1° / 34°F | 78 mm | 0 |
Nearest destinations
Head-to-head
How Brussels compares month by month: Brussels vs Lille · Brussels vs Rotterdam · Brussels vs Eindhoven · Brussels vs Ostend · all comparisons
Brussels: questions and answers
What kind of destination is Brussels?
Brussels is a city break in Belgium with a oceanic / maritime climate.
How many hours of sunshine does Brussels get a year?
Brussels gets about 1,609 hours of sunshine a year, at its best around September.
When is the best time to visit Brussels?
The sunniest time to visit Brussels is September, when the Sunshine Score peaks at 78/100 (with June and July close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Brussels?
January is the least sunny month in Brussels, scoring 0/100 with about 69 mm of rain.
How strong is the sun in Brussels?
The typical midday UV index in Brussels peaks around 5 (moderate) in June, 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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