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 a bad time to go. It scores 1, the joint lowest of the year, and the verdict is avoid. Brussels has a high of 6.3°C, a low of 1.5°C and 14.2 rain days, the most of any month. Only go if you have to, and pack for cold, wet days.
8°C / 2°C · 12 rain days · 5.4 h sun
February is still a month to avoid, with a score of 2. The high climbs only to 8.4°C and the low is 2.2°C. There are 12.3 rain days and just 5.4 sun hours. Grey, chilly weather makes it a poor choice for walking around towns.
11°C / 3°C · 14 rain days · 7.0 h sun
March scores 3.4 and the verdict is avoid. Highs reach 10.9°C, but there are 13.6 rain days and 71 mm of rain. Sun hours rise to 7, yet the weather is often cold and damp. Wait a month if you can.
14°C / 5°C · 11 rain days · 9.7 h sun
April is the first ok month, with a score of 5.7. The high is 14.1°C and the low 4.9°C. It is one of the drier months, with 11 rain days and 47 mm of rain, the lowest total of the year. Bring layers for cool mornings and evenings.
18°C / 9°C · 12 rain days · 10.9 h sun
May is one of the best months, with a score of 7.5. Highs reach 18.2°C and there are 10.9 sun hours. Expect 12.2 rain days, so carry a light rain jacket. It is a good time for city walks and day trips.
22°C / 13°C · 10 rain days · 11.3 h sun
June has the highest score of the year at 7.8, and the verdict is best. The high is 22°C and the low 12.8°C. It has the fewest rain days, at 10.2, and 11.3 sun hours. This is the safest pick if you want good weather.
23°C / 14°C · 11 rain days · 11.4 h sun
July is a best month, scoring 7.7. Brussels has a high of 23°C, a low of 14.2°C and 11 rain days. It has the most sun of the year, at 11.4 sun hours. Rain still falls, with 68 mm on average, so keep an umbrella handy.
23°C / 15°C · 12 rain days · 10.7 h sun
August scores 7.6 and is one of the best months. It is the warmest month, with a high of 23.4°C and a low of 14.6°C. There are 11.6 rain days and 59 mm of rain. Expect mild, pleasant days for exploring.
20°C / 12°C · 11 rain days · 9.0 h sun
September is a best month, with a score of 7.7. The high is still a comfortable 20.1°C and the low 11.9°C. There are 11.2 rain days and 9 sun hours. It is a strong choice for good weather late in the year.
16°C / 9°C · 12 rain days · 6.0 h sun
October drops to ok, with a score of 5.7. Highs fall to 15.6°C and lows to 9.3°C. Rain picks up, with 12.4 rain days and 71 mm, and sun hours fall to 6. It can still work if you pack for cool, wet days.
10°C / 5°C · 13 rain days · 4.5 h sun
November is a month to avoid, with a score of 2.5. The high is only 10.3°C and there are 13.2 rain days. Sun is limited to 4.5 sun hours. Grey, damp weather makes it a poor time for sightseeing.
8°C / 3°C · 14 rain days · 3.2 h sun
December is a bad time to go, scoring 1, the joint lowest of the year. Highs reach just 7.8°C and there are 14.1 rain days with 75 mm of rain. It has the least sun of any month, at 3.2 sun hours. Choose another month if your dates are flexible.
By trip type
City sightseeing
June to September suit city breaks best. In Brussels, highs reach 20.1–23.4°C and you get 9–11.4 hours of sun a day, but rain still falls on 10.2–11.6 days each month, so pack an umbrella.
Hiking & nature
June is the best month for hiking, with the fewest rain days in Brussels (10.2), 11.3 hours of sun and highs of 22°C. It is not a dry month, though, with 71 mm of rain, so bring waterproofs.
Keep planning
FAQ
Yes, August is one of the best months to visit Belgium, with a score of 7.6 out of 10. In Brussels, highs average 23.4°C and lows 14.6°C, the warmest of the year. Pack for rain anyway: it still falls on about 11.6 days, with 59 mm in the month.
June is the best month, with the top score of 7.8. July and September follow closely at 7.7. June in Brussels has the fewest rain days of the year, at 10.2, and highs of 22°C. September is a good choice if you want warm days, with highs of 20.1°C, after the peak summer months.
No, not for the weather. December scores just 1 and is a month to avoid. Highs in Brussels average only 7.8°C and lows 3.4°C. Rain falls on about 14.1 days, with 75 mm in total. Together with January, that makes it the wettest month by rainfall.
Both are acceptable but not ideal, and both score 5.7. April is cooler, with highs of 14.1°C in Brussels. It is also the driest month, with 47 mm of rain over 11 days. October is milder, with highs of 15.6°C, but wetter: 71 mm of rain over 12.4 days.
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