Weather by month for Brussels, the best months to go and how Belgium's regions differ, scored from 10 years of climate data.
Jun, Jul, Aug, Sep
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 20°C to 23°C · 10–12 rain days
May
Still good weather, just not quite the top months.
Highs 18°C · 12 rain days
Jan, Feb, Mar, Nov, Dec
The weakest weather of the year: too hot, too cold or too wet.
Highs 6°C to 11°C · 12–14 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 6°C / 2°C | 14 days (75 mm) | 3.6 h/day | 1.0/10 |
| February | 8°C / 2°C | 12 days (67 mm) | 5.4 h/day | 2.0/10 |
| March | 11°C / 3°C | 14 days (71 mm) | 7.0 h/day | 3.4/10 |
| April | 14°C / 5°C | 11 days (47 mm) | 9.7 h/day | 5.7/10 |
| May | 18°C / 9°C | 12 days (63 mm) | 10.9 h/day | 7.5/10 |
| Best month: June | 22°C / 13°C | 10 days (71 mm) | 11.3 h/day | 7.8/10 |
| Best month: July | 23°C / 14°C | 11 days (68 mm) | 11.4 h/day | 7.7/10 |
| Best month: August | 23°C / 15°C | 12 days (59 mm) | 10.7 h/day | 7.6/10 |
| Best month: September | 20°C / 12°C | 11 days (65 mm) | 9.0 h/day | 7.7/10 |
| October | 16°C / 9°C | 12 days (71 mm) | 6.0 h/day | 5.7/10 |
| November | 10°C / 5°C | 13 days (69 mm) | 4.5 h/day | 2.5/10 |
| December | 8°C / 3°C | 14 days (75 mm) | 3.2 h/day | 1.0/10 |
Figures for Brussels; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
6°C / 2°C · 14 rain days · 3.6 h sun
January is cold and grey in Brussels, with highs of 6.3°C and only 3.6 hours of sun a day. Rain falls on about 14 days, so you'll need a waterproof jacket. The month scores just 1 out of 10, making it one of the toughest times to visit. New Year's Day on 1 January is a public holiday, so expect some closures.
8°C / 2°C · 12 rain days · 5.4 h sun
February stays chilly, with highs reaching 8.4°C and around 12 rain days. Sun hours rise slightly to 5.4, giving a hint of brighter days ahead. The score of 2 still puts it in the 'avoid' range for most travellers, largely due to the short days and persistent damp weather.
11°C / 3°C · 14 rain days · 7.0 h sun
Spring starts to show in March, with highs of 10.9°C and sun hours climbing to 7. Rain is still frequent, with about 14 days of it and 71mm total. The score of 3.4 keeps this month on the weaker end, as temperatures remain cool and weather unsettled.
14°C / 5°C · 11 rain days · 9.7 h sun
April brings a real improvement: highs of 14.1°C, rainfall drops to 47mm and sun hours reach 9.7. With a score of 5.7, it's rated 'ok' for visiting. Easter falls in April in 2026, with Good Friday on 3 April, Easter Sunday on 5 April and Easter Monday on 6 April, all public holidays.
18°C / 9°C · 12 rain days · 10.9 h sun
May is one of the best months to visit, scoring 7.5. Highs reach 18.2°C, sun hours climb to 10.9, and rain days drop to 12.2. Labour Day on 1 May is a holiday, and Ascension Day (14 May) plus the following day (15 May) add extra days off, which can mean busier travel and lodging.
22°C / 13°C · 10 rain days · 11.3 h sun
June is the top-scoring month at 7.8, with highs of 22°C and strong sun of 11.3 hours a day. Rain days fall to 10.2, though rainfall is still 71mm for the month. Whit Monday on 25 May shifts into early summer, but Whit Monday itself falls on 25 May in 2026, just before June begins.
23°C / 14°C · 11 rain days · 11.4 h sun
July scores 7.7, with the year's warmest early stretch: highs of 23°C and sun hours of 11.4, the highest of the year. Rain days are moderate at 11. Belgian National Day on 21 July brings celebrations and some closures, particularly in Brussels.
23°C / 15°C · 12 rain days · 10.7 h sun
August holds steady with a score of 7.6. Highs peak at 23.4°C, the warmest month on record here, while sun hours stay strong at 10.7. Rain is lighter, at 59mm over 11.6 days. Assumption Day on 15 August is a public holiday, so some shops and services may close.
20°C / 12°C · 11 rain days · 9.0 h sun
September keeps the good run going with a score of 7.7. Highs cool slightly to 20.1°C, and sun hours drop to 9, but rain days stay low at 11.2. It's a reliable choice for mild, drier conditions without peak summer crowds.
16°C / 9°C · 12 rain days · 6.0 h sun
October sees a clear drop in temperature, with highs of 15.6°C and sun hours down to 6. Rain picks up again, with 12.4 rain days and 71mm of rainfall. The score of 5.7 rates it 'ok', suitable for travellers comfortable with cooler, greyer days.
10°C / 5°C · 13 rain days · 4.5 h sun
November turns cold and dark, with highs of just 10.3°C and sun hours falling to 4.5. Rain is frequent, at 13.2 days. The score drops to 2.5, reflecting tough weather. All Saints' Day (1 November) and Armistice Day (11 November) are public holidays this month.
8°C / 3°C · 14 rain days · 3.2 h sun
December is the weakest month for weather, scoring 1. Highs reach only 7.8°C, sun hours are at their lowest of the year at 3.2, and rain falls on about 14 days. Christmas Day (25 December) and St. Stephen's Day (26 December) are holidays, and festive markets bring some brightness despite the cold and dark.
Regional differences
Average daytime high each month, coloured by that city's own month score.
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Brussels | 6°C | 8°C | 11°C | 14°C | 18°C | 22°C | 23°C | 23°C | 20°C | 16°C | 10°C | 8°C |
| Ghent | 7°C | 9°C | 11°C | 14°C | 18°C | 22°C | 23°C | 23°C | 20°C | 16°C | 11°C | 8°C |
| Liège | 6°C | 8°C | 11°C | 14°C | 18°C | 22°C | 23°C | 23°C | 20°C | 15°C | 10°C | 7°C |
| Bruges | 7°C | 9°C | 11°C | 14°C | 17°C | 21°C | 22°C | 23°C | 20°C | 16°C | 11°C | 9°C |
| Namur | 5°C | 8°C | 10°C | 14°C | 18°C | 22°C | 23°C | 23°C | 20°C | 15°C | 10°C | 7°C |
Best Good OK Tough weather
By trip type
City sightseeing
June through September are the best months for city trips in Belgium. Highs run from 20.1°C in September to 23.4°C in August, with 9 to 11.4 hours of sunshine a day, making it comfortable to walk around Brussels, Bruges or Antwerp.
Hiking & nature
June is the top month for hiking. Days average 22°C with 11.3 hours of sunshine and only 10.2 rain days, giving you long, mostly dry daylight hours on the trail.
Events calendar
Public holidays: New Year's Day (1 Jan)
Public holidays: Good Friday (3 Apr), Easter Sunday (5 Apr), Easter Monday (6 Apr)
Public holidays: Labour Day (1 May), Ascension Day (14 May), Day after Ascension Day (15 May), Whit Monday (25 May)
Public holidays: Belgian National Day (21 Jul)
Public holidays: Assumption Day (15 Aug)
Public holidays: All Saints' Day (1 Nov), Armistice Day (11 Nov)
Public holidays: Christmas Day (25 Dec), St. Stephen's Day (26 Dec)
Keep planning
FAQ
Yes, August scores 7.6 out of 10 and is one of the best months to visit. Brussels highs reach 23.4°C with lows of 14.6°C. There are 11.6 rain days and 59 mm of rain, with 10.7 hours of sun a day, so the weather is warm and fairly dry.
October is rated 'ok' with a score of 5.7, not one of the best months. Highs drop to 15.6°C and lows to 9.3°C. Rain picks up to 12.4 days and 71 mm, while sun hours fall to just 6 a day, so it's cooler and greyer than summer.
No, January has the lowest score of the year at 1 out of 10. Brussels highs average only 6.3°C with lows of 1.5°C. It also has 14.2 rain days, 75 mm of rain, and just 3.6 hours of sun a day, making it cold, wet and dark.
June, July, August and September are the best months, each scoring between 7.5 and 7.8 out of 10. June is warmest in feel with highs of 22°C and the most sun hours at 11.3, while September stays mild at 20.1°C with slightly less rain, at 65 mm over 11.2 days.
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