Brussels weather in August
Brussels in August averages 18°C (65°F), 90 mm of rain and 6.1 hours of sun a day.
Of the twelve months in Brussels, August is the second warmest, the wettest and the fourth sunniest.
- Average temp
- 18°C (65°F)
14–23°C · 57–73°F
- Rainfall
- 90 mm
Showers likely
- Sunshine
- 6.1 h
hours per day
What is Brussels like in August?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Brussels in August?
A light rain jacket
About 90 mm falls this month — showers rather than washouts.
A layer for the evening
Evenings cool off noticeably once the sun is down.
August compared with July and September
August in Brussels is about the same temperature as July and 10 mm wetter than it, which averages 19°C (66°F).
August in Brussels is 3.1°C warmer than September and 23 mm wetter than it, which averages 15°C (60°F).
Daylight in Brussels in August
On 15 August the sun is up for 14 hours 32 minutes in Brussels, rising about 06:30 and setting about 21:02 local time.
August ends 1 hour 44 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 1 hour 58 minutes short of June, the longest-lit month here.
Where to stay in Brussels
Dates are a starting point for August.
Travel guides for Brussels
What to read before you book.
Brussels weather by month
TemperatureRainfall
How August compares with the rest of the year
August is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 4°C / 39°F | 77 mm |
| February | 4°C / 40°F | 67 mm |
| March | 7°C / 45°F | 59 mm |
| April | 10°C / 51°F | 47 mm |
| May | 14°C / 57°F | 61 mm |
| June | 17°C / 62°F | 72 mm |
| July | 19°C / 66°F | 80 mm |
| August | 18°C / 65°F | 90 mm |
| September | 15°C / 60°F | 67 mm |
| October | 11°C / 53°F | 71 mm |
| November | 7°C / 45°F | 75 mm |
| December | 4°C / 39°F | 89 mm |
Similar weather in August
Other destinations whose August averages sit close to this one.
Check another month
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FAQs about Brussels in August
August climate averages for Brussels, 1991–2020.
Brussels averages 18°C (65°F) in August, ranging from about 14°C (57°F) at night to 23°C (73°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 90 mm falls across August, enough to need a light jacket but not enough to reshape a trip.
Yes. August averages 18°C (65°F) against 15°C (60°F) in September — 3.1°C warmer.
August is about as warm as July, and 10 mm wetter.
Yes. August falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 6.1 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what August is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 14 hours 32 minutes of daylight in mid-August, against 16 hours 30 minutes in June and 7 hours 58 minutes in December.
On 15 August, sunrise is about 06:30 and sunset about 21:02 local time. Both shift across the month — the month ends 1 hour 44 minutes shorter than it starts.
