Brussels weather in September (Brussels Region, Belgium)

Is September a good time to explore Brussels weather-wise? Get all the weather information you need to plan your visit.

Temperatures

During September, Brussels experiences perfect weather, with pleasant temperatures and moderate rainfall. The daytime often sees temperatures reaching 21°C, but nighttime brings a cool-down to 11°C.

Precipitation

Brussels in September usually receives moderate rainfall, averaging around 61 mm for the month. Based on our climate data of the past 30 years, about 16 days of rain are anticipated.

Average sunshine

Expect a moderate amount of sunlight, with approximately 142 hours. This means a pleasant mix of sun and clouds.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit Brussels. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Brussels climate page with graphs.

 

Brussels, monthly averages in September

Min Temperature 11°C  

Max Temperature 21°C  

Chance of Rain 52%  

Precipitation 61 mm  

Rainy days 16 days  

Humidity 77%  

Windspeed 11 km/h  

Sunshine 142 hours  

Percentage Sunshine  

Where to go in Belgium in September

Find out more about the weather in Belgium and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Brussels, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Brussels.

Our site offers climate and forecast data for every country in the world. Are you going to Belgium? On this website you can find historical weather averages for many cities in Belgium. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.