Best Time to Visit Brussels
Belgium · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Recommended Months
Based on temperature comfort, low precipitation, and sunshine hours, the best time to visit Brussels is:
August → July → June
August scores 56/100 — the highest-rated month for travel.
Monthly Ratings (0-100)
Scores are weighted: temperature comfort (50%), low precipitation (30%), sunshine (20%). Higher is better.
| Month | Overall Score | Temp Comfort | Precipitation | Sunshine | Bar |
|---|---|---|---|---|---|
| January | 3 | 6 | 0 | 0 | |
| February | 8 | 16 | 0 | 0 | |
| March | 11 | 22 | 0 | 0 | |
| April | 16 | 32 | 0 | 0 | |
| May | 26 | 52 | 0 | 0 | |
| June | 36 | 73 | 0 | 0 | |
| July | 38 | 76 | 0 | 0 | |
| August | 40 | 81 | 0 | 0 | |
| September | 34 | 67 | 0 | 0 | |
| October | 24 | 48 | 0 | 0 | |
| November | 12 | 24 | 0 | 0 | |
| December | 6 | 12 | 0 | 0 |
Monthly Temperature Comfort
| Month | Mean Temp | Comfort Level |
|---|---|---|
| January | 4.1°C (39.4°F) | Cool (0-9°C) |
| February | 6.3°C (43.3°F) | Cool (0-9°C) |
| March | 7.3°C (45.1°F) | Cool (0-9°C) |
| April | 9.4°C (48.9°F) | Cool (0-9°C) |
| May | 13.5°C (56.3°F) | Mild (10-17°C) |
| June | 17.6°C (63.7°F) | Mild (10-17°C) |
| July | 18.1°C (64.6°F) | Warm (18-24°C) |
| August | 19.2°C (66.6°F) | Warm (18-24°C) |
| September | 16.4°C (61.5°F) | Mild (10-17°C) |
| October | 12.6°C (54.7°F) | Mild (10-17°C) |
| November | 7.8°C (46.0°F) | Cool (0-9°C) |
| December | 5.3°C (41.5°F) | Cool (0-9°C) |
Monthly Precipitation Rating
| Month | Rainfall (mm) | Rainy Days | Rating |
|---|---|---|---|
| January | 69.2 mm | 17.6 | Wet |
| February | 79.2 mm | 19.0 | Wet |
| March | 70.6 mm | 18.2 | Wet |
| April | 51.5 mm | 15.6 | Moderate |
| May | 63.6 mm | 17.2 | Wet |
| June | 79.2 mm | 16.2 | Wet |
| July | 93.8 mm | 20.8 | Wet |
| August | 57.5 mm | 18.4 | Moderate |
| September | 75.2 mm | 16.0 | Wet |
| October | 92.5 mm | 19.6 | Wet |
| November | 67.2 mm | 18.4 | Wet |
| December | 78.8 mm | 19.6 | Wet |
Monthly Sunshine Rating
| Month | Sunshine (hrs/day) | Rating |
|---|---|---|
| January | 3.6 hrs | Low |
| February | 4.9 hrs | Moderate |
| March | 7.1 hrs | Good |
| April | 9.5 hrs | Excellent |
| May | 10.9 hrs | Excellent |
| June | 11.6 hrs | Excellent |
| July | 11.3 hrs | Excellent |
| August | 10.9 hrs | Excellent |
| September | 9.2 hrs | Excellent |
| October | 6.2 hrs | Good |
| November | 4.3 hrs | Moderate |
| December | 2.7 hrs | Low |
Season-by-Season Breakdown
Spring (Mar-May)
Temperature: 10.1°C (50.2°F)
Rainfall: 61.9mm avg
Sunshine: 9.2 hrs/day
Humidity: 73.1%
Rainy Days: 17.0/mo
Mild transitional weather — comfortable for most activities.
Summer (Jun-Aug)
Temperature: 18.3°C (64.9°F)
Rainfall: 76.8mm avg
Sunshine: 11.3 hrs/day
Humidity: 72.1%
Rainy Days: 18.5/mo
Mild transitional weather — comfortable for most activities.
Autumn (Sep-Nov)
Temperature: 12.3°C (54.1°F)
Rainfall: 78.3mm avg
Sunshine: 6.6 hrs/day
Humidity: 82.4%
Rainy Days: 18.0/mo
Mild transitional weather — comfortable for most activities.
Winter (Dec-Feb)
Temperature: 5.2°C (41.4°F)
Rainfall: 75.7mm avg
Sunshine: 3.7 hrs/day
Humidity: 85.8%
Rainy Days: 18.7/mo
This is the cool season. Pack warm layers and plan indoor activities.
Frequently Asked Questions
What is the best time to visit Brussels?
Based on our data-driven analysis, the best months to visit Brussels are August, July, June, when temperatures are comfortable, rainfall is lower, and sunshine is plentiful. August scores 56/100, the highest-rated month.
What is the hottest month in Brussels?
August is the hottest month with an average temperature of 19.2°C (66.6°F).
What is the coldest month in Brussels?
January is the coldest month with an average temperature of 4.1°C (39.4°F).
When is the rainy season in Brussels?
July is the wettest month with an average of 93.8mm of precipitation. Brussels experiences about 217.0 rainy days per year. The driest month is April with 51.5mm.
What should I pack for a trip to Brussels?
Packing recommendations depend on the season of your visit. Based on the climate data, pack lightweight, breathable clothing if visiting during the warm months (August is hottest at 19.2°C). For cooler months, bring layers and a warm jacket (January averages 4.1°C). A waterproof jacket or umbrella is recommended year-round as Brussels receives 878.0mm of annual precipitation. Sun protection is important, especially during months with high UV index.
Brussels has an oceanic climate similar to London but with slightly warmer summers. I've studied the data and found that the city receives moderate rainfall year-round, with no distinct dry season. The best time for visiting is May to September, when temperatures are most pleasant and the city's outdoor cafés and markets are at their best.
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 50.85°, 4.35°. Timezone: Europe/Brussels. Last updated: 2026-07-30.