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Brussels Weather in September, Belgium

Slide and Tap Other Months

  • What is Average Temperature?
    The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

    Temperature

    15°C
    59°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    High Temperature

    19°C
    66°F
  • What is Average High Low Temperature?
    The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

    Low Temperature

    11°C
    52°F
  • What are Average Daily Sunshine Hours?
    Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

    Sunshine Hours

    5 hours
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall Days

    17 days
  • What is Average Rainfall?
    The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

    Rainfall

    60 mm

September, 2026

Sun
Mon
Tue
1
Wed
2
Thu
3
Fri
4 Avg 16º 61º
Sat
5 Avg 17º 63º
    We only display hourly forecasts for up to 14 days 😢
    We only display hourly forecasts for up to 14 days 😢
    • 06:00

      Patchy rain possible

      13º

      55º

    • 06 55

      SUNRISE https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunrise.png
    • 07:00

      Patchy rain possible

      14º

      57º

    • 08:00

      Patchy rain possible

      15º

      59º

    • 09:00

      Patchy rain possible

      17º

      63º

    • 10:00

      Patchy rain possible

      18º

      64º

    • 11:00

      Patchy rain possible

      19º

      66º

    • 12:00

      Patchy rain possible

      20º

      68º

    • 13:00

      Patchy rain possible

      20º

      68º

    • 14:00

      Patchy rain possible

      20º

      68º

    • 15:00

      Patchy rain possible

      20º

      68º

    • 16:00

      Patchy rain possible

      20º

      68º

    • 17:00

      Patchy rain possible

      19º

      66º

    • 18:00

      Patchy rain possible

      18º

      64º

    • 19:00

      Patchy rain possible

      17º

      63º

    • 20:00

      Patchy rain possible

      16º

      61º

    • 20 30

      SUNSET https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunset.png
    • 21:00

      Patchy rain possible

      15º

      59º

    • 22:00

      Patchy rain possible

      15º

      59º

    • 23:00

      Partly cloudy

      14º

      57º

    • 00:00

      Wed

      Partly cloudy

      14º

      57º

    • 01:00

      Partly cloudy

      13º

      55º

    • 02:00

      Partly cloudy

      13º

      55º

    • 03:00

      Partly cloudy

      13º

      55º

    • 04:00

      Partly cloudy

      13º

      55º

    • 05:00

      Partly cloudy

      12º

      54º

    We only display hourly forecasts for up to 14 days 😢
    We only display hourly forecasts for up to 14 days 😢
    • 06:00

      Patchy rain possible

      12º

      54º

    • 06 56

      SUNRISE https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunrise.png
    • 07:00

      Partly cloudy

      13º

      55º

    • 08:00

      Patchy rain possible

      15º

      59º

    • 09:00

      Patchy rain possible

      17º

      63º

    • 10:00

      Partly cloudy

      18º

      64º

    • 11:00

      Patchy rain possible

      20º

      68º

    • 12:00

      Patchy rain possible

      21º

      70º

    • 13:00

      Patchy rain possible

      21º

      70º

    • 14:00

      Patchy rain possible

      22º

      72º

    • 15:00

      Partly cloudy

      22º

      72º

    • 16:00

      Patchy rain possible

      21º

      70º

    • 17:00

      Partly cloudy

      20º

      68º

    • 18:00

      Patchy rain possible

      19º

      66º

    • 19:00

      Patchy rain possible

      18º

      64º

    • 20:00

      Patchy rain possible

      17º

      63º

    • 20 28

      SUNSET https://assets.holiday-weather.com/images/mobile/weather_icons/png/sunset.png
    • 21:00

      Patchy rain possible

      16º

      61º

    • 22:00

      Patchy rain possible

      15º

      59º

    • 23:00

      Patchy rain possible

      15º

      59º

    We only display hourly forecasts for up to 14 days 😢
6 Avg 17º 63º
7 Avg 17º 63º
8 Avg 17º 63º
9 Avg 16º 61º
10 Avg 17º 63º
11 Avg 17º 63º
12 Avg 16º 61º
13 Avg 15º 59º
14 Avg 15º 59º
15 Avg 15º 59º
16 Avg 14º 57º
17 Avg 14º 57º
18 Avg 14º 57º
19 Avg 14º 57º
20 Avg 15º 59º
21 Avg 15º 59º
22 Avg 15º 59º
23 Avg 15º 59º
24 Avg 14º 57º
25 Avg 14º 57º
26 Avg 14º 57º
27 Avg 14º 57º
28 Avg 14º 57º
29 Avg 14º 57º
30 Avg 14º 57º
Forecast
Avg Historical Daily Average

September brings shorter days with only 5 hours of sunshine to enjoy on average. Additionally, it'll rain for half the month and the lowest temperature is 11C, while the highest is 19C.

The Hotel the Moon is located 50 meters away from the Grand Palace, so would be a good base for all of the above events it's a good and reasonably priced hotel, too.

Hotel La Madeleine is another comfortable and well equipped hotel close to the city centre.

Search for your next stay in Brussels Choose from millions of homes, hotels and other properties all over the world

The first weekend of the month marks theBelgian Beer Weekend, which takes place around the Grand Palace, so get your beer goggles on and sample some of the best beer in the world. The Comic Strip Festival takes place from 5th 9th of this month, and is ideal for soaking up some local culture while having a good chuckle in the process. From beer to comedy and now food -Eat! Brussels lasts for the whole of September. Offering a chance to taste a wide range of dishes from Belgium, all brought together under one roof, this event is a real hit with locals and tourists alike.

Brussels Events September

Festival


4 Sep 2026
6 Sep 2026

Belgian Beer Weekend 🎡

Belgium’s brewing heritage takes centre stage as hundreds of beers are served in the stunning surroundings of the Grand-Place.


Cultural


19 Sep 2026
20 Sep 2026

Heritage Days 🗓

Historic buildings, museums and hidden spaces open their doors for free, giving visitors a deeper look at Brussels’ past.