Measurements:
°C
°F
Brussel
42°F
SE 14 mph
Feels like: 36°F
Precip: 100%
World Resorts Belgium Brussel Weather

Brussel Sea Water Temperature

Current Sea Water Temperature:
+47.6°F
Maximum Sea Water Temperature in March: 48.4°F
Minimum Sea Water Temperature in March: 37.0°F
Average water temperature in March: 43.2°F

Sea Water Temperature for the Last 10 Days:

March 29 47.6°F March 24 45.4°F
March 28 47.8°F March 23 45.4°F
March 27 48.2°F March 22 44.2°F
March 26 47.6°F March 21 43.8°F
March 25 47.2°F March 20 45.0°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
May 5 days
The most windy months:
December 12 mph
February 11 mph
January 11 mph

Brussel on the Weather Map

Belgium Resorts:
NAME
Antwerpen +44
Brugge +44
Brussel +42
Charleroi +42
Gent +44
Kortrijk +44
Liege +42
Namur +42
Oostende +46
24 Hours Weather Forecast
Brussel
Local time: 08:03
30 mar, monday
0900 42°F
SE
14 mph
1200 48°F
SE
19 mph
1500 48°F
SE
20 mph
1800 46°F
SE
17 mph
2100 40°F
SE
11 mph
31 mar, tuesday
0000 38°F
SE
6 mph
0300 36°F
E
6 mph
0600 36°F
E
7 mph