Brussels weather
Our guide to the weather in Brussels during August
Brussels offers a wealth of cultural attractions and a lively atmosphere, making it an ideal city break destination. In August, make sure to bring an umbrella as the weather can be unpredictable. We've looked at the most up-to-date weather data for Brussels, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Brussels weather in August.
How warm is it in Brussels during August?
August is typically the warmest month in Brussels. The temperature reaches around 23℃ during the daytime, falling away to 15℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Brussels during August?
On average, there will be 5 rainy days during the month, amounting to 92.3mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Brussels during August?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in August. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.
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