Belgium Brussels Weather in August — Climate Guide
August in Brussels is very-high
August is very-high for Brussels.
August is warm, lively, and home to Brussels' most spectacular sight — but only every other year. It averages 23°C/14°C with 75mm of rain.
The headline is the Flower Carpet (Tapis de Fleurs / Bloementapijt): in even-numbered years, for a few days in mid-August, the Grand-Place is covered with a vast pattern of cut begonias, free to walk around, with a paid Town Hall balcony view of the full design. 2026 is an even year, so the carpet is on; in odd years there's no carpet. Always confirm exact dates.
Travel score
Brussels August Weather Stats
Avg High
23°C
Avg Low
14°C
Rainy Days
13
75mm total
Sunshine
6.4h
Daily avg
Humidity
73%
comfortable
UV Index
5
Moderate
Wind
12 km/h
Gusts 24
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
17 μg/m³
PM10
28 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
24°C
Nighttime
14°C
Humidity and wind affect how the actual temperature feels.
Wind
12 km/h
Max gust 24 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Grand-Place Flower Carpet (even years, incl. 2026)
- Warm, lively summer city
- Meyboom folk tradition (Aug 9)
- Long, pleasant days
Cons
- Peak-season crowds and prices
- Flower Carpet only in even years and only a few days
- Some local shops/restaurants close for holidays
- Showers still possible
August Events & Festivals
- Grand-Place Flower Carpet (mid-August, EVEN years only) — a tapestry of begonias
- Brussels Summer / Meyboom planting (Aug 9)
- Tapis de Fleurs (biennial)
- Peak summer season
Brussels in August — Full Picture
August is warm, lively, and home to Brussels' most spectacular sight — but only every other year. It averages 23°C/14°C with 75mm of rain.
The headline is the Flower Carpet (Tapis de Fleurs / Bloementapijt): in even-numbered years, for a few days in mid-August, the Grand-Place is covered with a vast pattern of cut begonias, free to walk around, with a paid Town Hall balcony view of the full design. 2026 is an even year, so the carpet is on; in odd years there's no carpet. Always confirm exact dates.
The Meyboom (planting of the May tree) on August 9 is a quirky UNESCO-listed folk tradition with a procession and giant puppets.
Weather stays comfortably warm, occasionally hot, with the usual chance of showers. Like July, it's peak season — crowds and firm prices in the city and in Bruges. Many locals take holidays, so some smaller restaurants and shops close for part of the month.
Note: the Flower Carpet is biennial and brief — plan carefully around its dates if it's a priority.
What to Wear & What to Pack
Warm late summer — around 23°C/14°C. Light clothing with a layer for evenings and showers. Comfortable warmth, with the occasional hot spell.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
14.3°C
5.7°C
15.3/mo
Summer (Jun·Jul·Aug)
Current22.3°C
13.3°C
13.3/mo
Autumn (Sep·Oct·Nov)
15°C
7.7°C
15/mo
Winter (Dec·Jan·Feb)
6.7°C
1.3°C
17.7/mo
Brussels Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 6° | 1° | 19d·75mm | 1.8h | 86% | 1 | Quiet | Low season | |
| 7° | 1° | 16d·65mm | 2.6h | 83% | 1 | Quiet | Low season | |
| 11° | 3° | 16d·65mm | 3.8h | 78% | 2 | Moderate | Shoulder | |
| 14° | 5° | 15d·55mm | 5.2h | 73% | 4 | Busy | Peak | |
| May (Best) | 18° | 9° | 15d·65mm | 6.2h | 71% | 5 | Busy | Peak |
| June (Best) | 21° | 12° | 14d·70mm | 6.6h | 70% | 6 | Busy | Peak |
| July (Best) | 23° | 14° | 13d·75mm | 7h | 71% | 6 | Very busy | Peak |
| August (Best) | 23° | 14° | 13d·75mm | 6.4h | 73% | 5 | Very busy | Peak |
| 20° | 11° | 13d·60mm | 5h | 76% | 4 | Busy | Shoulder | |
| 15° | 8° | 15d·75mm | 3.6h | 82% | 2 | Moderate | Shoulder | |
| 10° | 4° | 17d·75mm | 2h | 86% | 1 | Moderate | Shoulder | |
| 7° | 2° | 18d·80mm | 1.6h | 87% | 1 | Busy | Peak |
View Other Months
Brussels August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Brussels?
Brussels in August is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Brussels in August?
Brussels August averages a high of 23°C and a low of 14°C.
Does it rain much in Brussels in August?
Brussels August averages 75mm of rainfall over about 13 rainy days.
What should I wear in Brussels in August?
Warm late summer — around 23°C/14°C. Light clothing with a layer for evenings and showers. Comfortable warmth, with the occasional hot spell.
What time are sunrise and sunset in Brussels in August?
Brussels August sunrise is 06:25 and sunset is 21:05, with 14h 40min of daylight.
What's the air quality like in Brussels in August?
Brussels August air quality (AQI) averages 44, rated Good. PM2.5 averages 17μg/m³.
What activities are recommended in Brussels in August?
In August, Brussels is great for Grand-Place Flower Carpet (even years, mid-August), Meyboom procession (Aug 9), Terraces, parks, and day trips.
Is August peak season in Brussels?
Brussels August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Brussels
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.