Brussels in August
In August, Brussels averages 23°C (73°F) during the day and 14°C (57°F) at night, with around 12 days of rain (80 mm total).
Peak seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
August offers comfortable temperatures in Brussels, with some rain to plan around.
How August compares to the rest of the year in Brussels
August is one of the warmest months in Brussels (2nd of 12) and one of the driest months (11th of 12). Daytime temperature runs 9°C above the annual average (14°C). August runs roughly the same as July (23°C) and cools 4°C in September (19°C).
August sunrise & sunset in Brussels
Times shown for Brussels local time (Europe/Brussels), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Brussels — August
Golden-hour and blue-hour windows for the 15th of August, in Brussels's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Brussels in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Peak season) and Brussels's popularity.
Crowds & pricing — August in Brussels
Brussels is in peak season during this month — expect bigger crowds at famous sights, higher hotel and flight prices, and longer queues. Restaurant reservations a few days out are advisable, and any boutique hotels you have your eye on should be booked weeks ahead. The trade-off: most attractions, restaurants, and seasonal services are fully open, the weather is at its most reliable, and the city feels at its most alive.
Why this tier: excellent tourism weather Northern Hemisphere summer holidays
Sun & mosquito risk — August in Brussels
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Brussels in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 6°C / 43°F | 1°C / 34°F | 75 mm | 15 | 0 |
| February | 7°C / 45°F | 1°C / 34°F | 65 mm | 12 | 0 |
| March | 11°C / 52°F | 3°C / 37°F | 65 mm | 13 | 0 |
| April | 14°C / 57°F | 5°C / 41°F | 55 mm | 12 | 0 |
| May | 18°C / 64°F | 9°C / 48°F | 70 mm | 12 | 0 |
| June | 21°C / 70°F | 12°C / 54°F | 75 mm | 12 | 0 |
| July | 23°C / 73°F | 14°C / 57°F | 75 mm | 12 | 0 |
| August | 23°C / 73°F | 14°C / 57°F | 80 mm | 12 | 0 |
| September | 19°C / 66°F | 11°C / 52°F | 70 mm | 12 | 0 |
| October | 15°C / 59°F | 8°C / 46°F | 75 mm | 13 | 0 |
| November | 9°C / 48°F | 4°C / 39°F | 80 mm | 13 | 0 |
| December | 7°C / 45°F | 2°C / 36°F | 80 mm | 14 | 0 |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Brussels in August →
Frequently asked questions
How hot is Brussels in August?
In August, Brussels averages a high of 23°C (73°F) and a low of 14°C (57°F) — generally mild and pleasant.
Does it rain a lot in Brussels in August?
August can be fairly wet in Brussels, with about 12 rainy days on average.
Is August a good time to visit Brussels?
August is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Brussels in August?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full August packing list for Brussels for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.