Measurements:
°C
°F
CURRENT WEATHER
23:00
Brussel
58°F
E 11 mph
Feels like: 54°F
Precip: 8%
World Resorts Belgium Brussel Weather

7 Day Weather Forecast

09.08
tue
DAY
70°F
NE 11 mph
precip
18%
NIGHT
58°F
E 11 mph
precip
8%
09.09
wed
DAY
62°F
E 16 mph
precip
13%
NIGHT
56°F
E 4 mph
precip
22%
09.10
thu
DAY
64°F
NE 5 mph
precip
12%
NIGHT
56°F
E 4 mph
precip
16%
09.11
fri
DAY
68°F
NE 14 mph
precip
8%
NIGHT
62°F
S 4 mph
precip
11%
09.12
sat
DAY
72°F
NE 3 mph
precip
3%
NIGHT
62°F
NE 6 mph
precip
9%
09.13
sun
DAY
66°F
E 15 mph
precip
29%
NIGHT
60°F
NE 4 mph
precip
14%
09.14
mon
DAY
70°F
N 2 mph
precip
3%
NIGHT
64°F
N 7 mph
precip
12%

Brussel Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Brussel was 18.3°F. The maximum and minimum values were 16.2°F and 20.2°F respectively.

Brussel on the Weather Map

Best Time to Visit Brussel
The most sunny months:
September 11 days
March 10 days
April 10 days
The most warm months:
August 76.0 °F
July 75.4 °F
June 72.2 °F
Warmest sea temperature:
August 70.3 °F
July 69.1 °F
September 66.7 °F
The most cold months:
January 40.8 °F
December 43.8 °F
February 44.0 °F
The most rainy months:
December 5 days
July 4 days
May 4 days
The most windy months:
December 12 mph
February 11 mph
January 11 mph
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