Belgium
Best time to visit Brussels
Based on 8 years of real historical weather data (2015–2023). Sunshine hours, rainfall, and temperature — week by week.
Planning a trip, an event, or a party in Brussels? Here's what to expect. Summers here run warm (around 20°C at midday), and winters are cold (around 5°C at midday). For the best odds of good weather, aim for August, July and June. Mornings sit around 16°C, climbing to 21°C by midday and staying at 23°C into the afternoon, before cooling to 21°C in the evening. You'll get up to 10.8h of sunshine a day, with mostly dry. If you can be flexible, steer clear of February and November — that's when conditions are least reliable.
Month-by-month weather
If you visit in January: mornings sit around 3°C, climbing to 4°C by midday and staying at 5°C into the afternoon, before cooling to 4°C in the evening.
If you visit in February: mornings sit around 3°C, climbing to 5°C by midday and staying at 8°C into the afternoon, before cooling to 6°C in the evening.
If you visit in March: mornings sit around 5°C, climbing to 8°C by midday and staying at 11°C into the afternoon, before cooling to 9°C in the evening.
If you visit in April: mornings sit around 6°C, climbing to 11°C by midday and staying at 14°C into the afternoon, before cooling to 12°C in the evening.
If you visit in May: mornings sit around 11°C, climbing to 16°C by midday and staying at 18°C into the afternoon, before cooling to 16°C in the evening.
If you visit in June: mornings sit around 15°C, climbing to 20°C by midday and staying at 22°C into the afternoon, before cooling to 21°C in the evening.
If you visit in July: mornings sit around 16°C, climbing to 21°C by midday and staying at 22°C into the afternoon, before cooling to 21°C in the evening.
If you visit in August: mornings sit around 16°C, climbing to 21°C by midday and staying at 23°C into the afternoon, before cooling to 21°C in the evening.
If you visit in September: mornings sit around 13°C, climbing to 17°C by midday and staying at 19°C into the afternoon, before cooling to 17°C in the evening.
If you visit in October: mornings sit around 10°C, climbing to 13°C by midday and staying at 15°C into the afternoon, before cooling to 13°C in the evening.
If you visit in November: mornings sit around 6°C, climbing to 8°C by midday and staying at 9°C into the afternoon, before cooling to 7°C in the evening.
If you visit in December: mornings sit around 5°C, climbing to 6°C by midday and staying at 7°C into the afternoon, before cooling to 6°C in the evening.
Frequently asked questions
What is the best time to visit Brussels?
If you're planning a trip, wedding, or outdoor event in Brussels, aim for August, July and June — Mornings sit around 16°C, climbing to 21°C by midday and staying at 23°C into the afternoon, before cooling to 21°C in the evening. You'll get up to 10.8h of sunshine a day, with mostly dry. This is based on 8 years of real historical weather data (2015–2023), not a single forecast.
What is the weather like in Brussels in August?
If you visit Brussels in August, mornings sit around 16°C, climbing to 21°C by midday and staying at 23°C into the afternoon, before cooling to 21°C in the evening. You'll get around 10.8h of sunshine per day and 1.8mm of rain — mostly dry.
What is the hottest month in Brussels?
July is typically the hottest month, running warm — good to know if you're planning something outdoors and want to avoid the peak heat.
What is the driest month in Brussels?
April is your safest bet if you want to avoid rain, averaging only 1.3mm per day. December is the wettest, at 2.8mm per day — worth planning around if you're hosting anything outdoors.
When should I avoid visiting Brussels?
If you have flexibility on dates, February and November are worth avoiding — colder temperatures and more rainfall make them the least reliable months for a trip or event.
All weeks ranked by weather score
| Week | Dates | Midday temp | Range | Sun / day | Rain / day | Score |
|---|---|---|---|---|---|---|
| W32 | Aug 5–11 | 22°C | 12° → 28.8° | 11.9h | 1.2mm | 93 |
| W34 | Aug 19–25 | 21°C | 12° → 27.4° | 10.6h | 1.0mm | 91 |
| W27 | Jul 1–7 | 21°C | 11.5° → 26.3° | 12.8h | 1.8mm | 89 |
| W26 | Jun 24–30 | 21°C | 10.8° → 26.7° | 11.6h | 2.1mm | 87 |
| W29 | Jul 15–21 | 21°C | 12° → 27.8° | 11.0h | 2.2mm | 87 |
| W24 | Jun 10–16 | 20°C | 10.3° → 26.7° | 12.3h | 2.0mm | 86 |
| W22 | May 27–Jun 2 | 19°C | 8.3° → 25.6° | 12.2h | 1.5mm | 85 |
| W31 | Jul 29–Aug 4 | 20°C | 11.8° → 27.2° | 11.6h | 2.1mm | 85 |
| W35 | Aug 26–Sep 1 | 20°C | 10.6° → 26.4° | 10.4h | 1.9mm | 85 |
| W30 | Jul 22–28 | 21°C | 12.4° → 27.1° | 10.9h | 2.7mm | 84 |
| W23 | Jun 3–9 | 19°C | 9.8° → 26.6° | 11.6h | 2.2mm | 83 |
| W25 | Jun 17–23 | 20°C | 10.7° → 26.6° | 10.5h | 2.4mm | 83 |
| W28 | Jul 8–14 | 20°C | 10.9° → 25.9° | 11.4h | 2.3mm | 83 |
| W33 | Aug 12–18 | 21°C | 13° → 27° | 9.5h | 2.6mm | 83 |
| W36 | Sep 2–8 | 19°C | 10.2° → 25.6° | 9.6h | 1.9mm | 83 |
| W21 | May 20–26 | 17°C | 7° → 23.4° | 12.1h | 1.4mm | 82 |
| W16 | Apr 15–21 | 13°C | 2.4° → 19.9° | 11.1h | 0.6mm | 78 |
| W20 | May 13–19 | 15°C | 5.2° → 21.9° | 11.1h | 1.5mm | 77 |
| W37 | Sep 9–15 | 18°C | 9° → 22.9° | 9.1h | 2.0mm | 77 |
| W38 | Sep 16–22 | 17°C | 8.1° → 23.2° | 8.7h | 2.2mm | 75 |
| W19 | May 6–12 | 15°C | 5.5° → 21.4° | 10.5h | 2.4mm | 73 |
| W15 | Apr 8–14 | 12°C | 2.1° → 17.7° | 9.7h | 1.1mm | 71 |
| W17 | Apr 22–28 | 12°C | 2.9° → 19.4° | 10.8h | 1.5mm | 71 |
| W18 | Apr 29–May 5 | 13°C | 3.3° → 20.4° | 9.6h | 2.2mm | 67 |
| W40 | Sep 30–Oct 6 | 14°C | 7.5° → 19.6° | 7.7h | 2.6mm | 64 |
| W41 | Oct 7–13 | 15°C | 5.9° → 20.4° | 6.5h | 1.9mm | 64 |
| W12 | Mar 18–24 | 9°C | 0.5° → 15.4° | 8.1h | 1.1mm | 63 |
| W13 | Mar 25–31 | 9°C | −0.2° → +16.5° | 7.8h | 1.7mm | 60 |
| W14 | Apr 1–7 | 9°C | −0.2° → +16.7° | 8.2h | 1.8mm | 60 |
| W39 | Sep 23–29 | 15°C | 7.9° → 20.6° | 7.6h | 3.8mm | 60 |
| W42 | Oct 14–20 | 13°C | 5.7° → 19° | 5.5h | 2.3mm | 57 |
| W45 | Nov 4–10 | 10°C | 2.2° → 15° | 5.9h | 1.5mm | 57 |
| W7 | Feb 12–18 | 7°C | 0.1° → 13.7° | 6.6h | 1.7mm | 54 |
| W43 | Oct 21–27 | 13°C | 6.7° → 17.9° | 4.6h | 2.2mm | 54 |
| W8 | Feb 19–25 | 6°C | −1° → +11.5° | 6.3h | 1.5mm | 53 |
| W44 | Oct 28–Nov 3 | 10°C | 4° → 15.5° | 5.5h | 2.3mm | 52 |
| W11 | Mar 11–17 | 8°C | 0.6° → 13.4° | 6.5h | 2.5mm | 50 |
| W9 | Feb 26–Mar 3 | 5°C | −1.9° → +12.5° | 6.1h | 2.1mm | 49 |
| W46 | Nov 11–17 | 9°C | 3.1° → 13.1° | 4.2h | 2.2mm | 47 |
| W6 | Feb 5–11 | 3°C | −3.8° → +8.2° | 5.3h | 1.5mm | 45 |
| W10 | Mar 4–10 | 7°C | −0.4° → +13.6° | 6.5h | 3.8mm | 44 |
| W3 | Jan 15–21 | 4°C | −1.9° → +8.4° | 4.5h | 2.2mm | 41 |
| W47 | Nov 18–24 | 7°C | 0.9° → 11.9° | 3.7h | 2.8mm | 40 |
| W4 | Jan 22–28 | 3°C | −2.9° → +9.2° | 3.1h | 1.6mm | 39 |
| W50 | Dec 9–15 | 4°C | −0.2° → +8.9° | 3.5h | 2.3mm | 39 |
| W52 | Dec 23–29 | 8°C | 1.8° → 12.9° | 2.9h | 2.8mm | 38 |
| W48 | Nov 25–Dec 1 | 5°C | −1.4° → +10.4° | 3.2h | 2.6mm | 37 |
| W51 | Dec 16–22 | 8°C | 2.9° → 12.1° | 2.9h | 3.1mm | 37 |
| W1 | Jan 1–7 | 5°C | −0.2° → +9° | 3.0h | 2.4mm | 36 |
| W2 | Jan 8–14 | 5°C | −0.5° → +9.7° | 3.5h | 3.0mm | 36 |
| W49 | Dec 2–8 | 5°C | 0° → 9.9° | 3.2h | 3.2mm | 34 |
| W5 | Jan 29–Feb 4 | 5°C | −0.8° → +10.1° | 3.2h | 3.5mm | 33 |
Nail down the right dates for Brussels
Compare individual weeks, see year-by-year variation, and download the data as Excel — everything you need to plan a trip, wedding, or event.
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