World Resorts Netherlands Rotterdam Weather

Rotterdam sea water temperature

Current sea water temperature:
+70.5°F
Minimum sea water temperature in July: 70.9°F
Maximum sea water temperature in July: 59.2°F
Average sea water temperature in July: 65.4°F

Sea water temperature for the last 10 days:

July 16 70.5°F July 11 68.4°F
July 15 70.5°F July 10 66.9°F
July 14 70.3°F July 9 67.8°F
July 13 69.6°F July 8 67.3°F
July 12 69.3°F July 7 67.1°F

When is the warmest sea in Rotterdam?

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

Monthly Sea Temperatures in Rotterdam, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 67.9°F. The highest and lowest sea temperatures during the month were 68.9°F and 66.9°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 68.1°F. The highest and lowest sea temperatures during the month were 70.5°F and 66.7°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 64.5°F. The highest and lowest sea temperatures during the month were 67.3°F and 60.6°F.

Best time for vacation in Rotterdam

Sunniest months:
August 12 days
June 11 days
April 11 days
Warmest months:
August 71.5 °F
July 70.9 °F
June 68.6 °F
Warmest sea temp:
August 67.1 °F
July 65.3 °F
September 64.8 °F
Coldest months:
January 42.8 °F
February 44.5 °F
December 45.8 °F
Rainiest months:
August 4 days
December 4 days
October 4 days
Windiest months:
December 12.8 mph
February 12.4 mph
January 12.1 mph

Rotterdam on a weather map

Rotterdam
+61°F
S 5 mph
Feels like: +61°F
Precip.: 13%
Places in Netherlands:
Name
°F
+59°F
+81°F
+57°F
+64°F
+59°F
+59°F
+61°F
+59°F
+59°F
24 Hours Forecast
Rotterdam
Local time: 04:36
July 17, friday
0600
61°F
S
5 mph
0900
70°F
S
7 mph
1200
77°F
SE
9 mph
1500
79°F
SE
12 mph
1800
73°F
S
15 mph
2100
68°F
S
11 mph
July 18, saturday
0000
61°F
SE
6 mph
0300
61°F
SE
6 mph
Units of measurement: °C / °F