Measurements:
°C
°F
Rotterdam
52°F
W 7 mph
Feels like: 50°F
Precip: 39%
World Resorts Netherlands Rotterdam Weather

Rotterdam Sea Water Temperature

Current Sea Water Temperature:
+62.8°F
Maximum Sea Water Temperature in October: 67.6°F
Minimum Sea Water Temperature in October: 54.6°F
Average water temperature in October: 60.4°F

Sea Water Temperature for the Last 10 Days:

October 18 62.8°F October 13 64.0°F
October 17 63.0°F October 12 64.2°F
October 16 63.2°F October 11 64.6°F
October 15 62.6°F October 10 65.8°F
October 14 63.6°F October 09 67.0°F

When is the Warmest Sea for Rotterdam?

According to our data for the last three years for Rotterdam 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: 2026 2025 2024

The average sea surface temperature in August 2026 for Rotterdam was 71.8°F. The maximum and minimum values were 69.8°F and 74.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Rotterdam was 70.8°F. The maximum and minimum values were 68.6°F and 73.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Rotterdam was 68.2°F. The maximum and minimum values were 66.0°F and 70.2°F respectively.

Best Time to Visit Rotterdam
The most sunny months:
August 12 days
June 11 days
April 11 days
The most warm months:
August 74.2 °F
July 73.6 °F
June 70.6 °F
Warmest sea temperature:
August 69.1 °F
July 67.2 °F
September 66.5 °F
The most cold months:
January 42.0 °F
February 43.9 °F
December 45.3 °F
The most rainy months:
August 4 days
December 4 days
October 4 days
The most windy months:
December 12 mph
February 12 mph
January 12 mph

Rotterdam on the Weather Map

Netherlands Resorts:
NAME
F°
Amsterdam +52
Aruba +86
Breda +50
Eindhoven +52
Groningen +46
Hague +52
Maastricht +44
Rotterdam +52
Utrecht +52
24 Hours Weather Forecast
Rotterdam
Local time: 06:55
19 oct, monday
0900 52°F
W
8 mph
1200 54°F
W
9 mph
1500 60°F
W
12 mph
1800 58°F
W
10 mph
2100 52°F
W
12 mph
20 oct, tuesday
0000 48°F
W
12 mph
0300 46°F
W
12 mph
0600 44°F
W
12 mph