Measurements:
°C
°F
Brussel
68°F
W 5 mph
Feels like: 68°F
Precip: 100%
World Resorts Belgium Brussel Weather

Brussel Sea Water Temperature

Current Sea Water Temperature:
+63.8°F
Maximum Sea Water Temperature in May: 65.8°F
Minimum Sea Water Temperature in May: 48.6°F
Average water temperature in May: 56.5°F

Sea Water Temperature for the Last 10 Days:

May 30 63.8°F May 25 60.2°F
May 29 63.0°F May 24 58.8°F
May 28 62.8°F May 23 58.8°F
May 27 62.2°F May 22 56.0°F
May 26 60.4°F May 21 56.6°F

When is the Warmest Sea for Brussel?

According to our data for the last three years for Brussel the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Brussel was 71.3°F. The maximum and minimum values were 70.2°F and 72.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Brussel was 71.4°F. The maximum and minimum values were 69.0°F and 72.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Brussel was 66.7°F. The maximum and minimum values were 62.4°F and 70.4°F respectively.

Best Time to Visit Brussel
The most sunny months:
September 11 days
March 10 days
April 10 days
The most warm months:
August 75.8 °F
July 75.0 °F
June 72.0 °F
Warmest sea temperature:
August 70.2 °F
July 68.8 °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
June 5 days
July 4 days
The most windy months:
December 12 mph
February 11 mph
January 11 mph

Brussel on the Weather Map

Belgium Resorts:
NAME
Antwerpen +70
Brugge +70
Brussel +68
Charleroi +70
Gent +70
Kortrijk +68
Liege +70
Namur +70
Oostende +64
24 Hours Weather Forecast
Brussel
Local time: 09:33
30 may, saturday
1200 78°F
SW
4 mph
1500 84°F
S
3 mph
1800 84°F
S
4 mph
2100 74°F
SW
6 mph
31 may, sunday
0000 66°F
N
6 mph
0300 66°F
N
8 mph
0600 64°F
NE
9 mph
0900 66°F
E
9 mph