World Resorts Belgium Brussel Weather

Brussel sea water temperature

Current sea water temperature:
+46.8°F
Minimum sea water temperature in December: 49.6°F
Maximum sea water temperature in December: 43.0°F
Average sea water temperature in December: 45.4°F

Sea water temperature for the last 10 days:

December 4 46.8°F November 29 47.8°F
December 3 47.1°F November 28 48.4°F
December 2 46.9°F November 27 48.9°F
December 1 47.1°F November 26 49.1°F
November 30 47.5°F November 25 49.3°F

When is the warmest sea in Brussel?

Based on the data about daily sea water temperature for the last three years the warmest sea in Brussel was noticed in August, July and September.

Monthly Sea Temperatures in Brussel, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 69.2°F. The highest and lowest sea temperatures during the month were 70.5°F and 68.2°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 69.3°F. The highest and lowest sea temperatures during the month were 70.3°F and 67.1°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 65.0°F. The highest and lowest sea temperatures during the month were 68.4°F and 61.2°F.

Best time for vacation in Brussel

Sunniest months:
September 11 days
March 10 days
April 10 days
Warmest months:
August 73.2 °F
July 72.5 °F
June 69.8 °F
Warmest sea temp:
August 68.1 °F
July 66.9 °F
September 65.0 °F
Coldest months:
January 41.8 °F
December 44.3 °F
February 44.4 °F
Rainiest months:
December 5 days
June 5 days
May 5 days
Windiest months:
December 11.9 mph
February 11.8 mph
January 11.4 mph

Brussel on a weather map

Brussel
+39°F
N 7 mph
Feels like: +34°F
Precip.: 0%
Places in Belgium:
Name
°F
+41°F
+39°F
+39°F
+39°F
+39°F
+37°F
+39°F
+43°F
+37°F
24 Hours Forecast
Brussel
Local time: 03:57
December 05, friday
0600
37°F
N
6 mph
0900
37°F
N
7 mph
1200
43°F
N
10 mph
1500
45°F
N
10 mph
1800
41°F
N
12 mph
2100
41°F
N
17 mph
December 06, saturday
0000
41°F
N
22 mph
0300
43°F
N
22 mph
Units of measurement: °C / °F