Current sea water temperature:
+43.5°F
| Minimum sea water temperature in December: | 51.1°F |
| Maximum sea water temperature in December: | 43.5°F |
| Average sea water temperature in December: | 46.7°F |
| more information | |
14 days
forecast
forecast
| Rotterdam |
monthly
weather
weather
| Rotterdam |
Sea water temperature for the last 10 days:
| December 31 | 43.5°F | December 26 | 45.7°F |
| December 30 | 43.5°F | December 25 | 46.8°F |
| December 29 | 43.5°F | December 24 | 47.5°F |
| December 28 | 44.4°F | December 23 | 47.7°F |
| December 27 | 44.8°F | December 22 | 47.1°F |
Monthly sea water temperature, °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:
2025
2024
2023
The average sea water temperature in July of 2025 was 67.1°F. The highest and lowest sea temperatures during the month were 68.5°F and 65.7°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.
current
weather
weather
| Rotterdam |
weather in
January
January
| Rotterdam |
Best time for vacation in Rotterdam
Rotterdam on a weather map
Places in Netherlands:
Name
°F
24 Hours Forecast
Rotterdam
Local time: 20:50
December 31, wednesday
2100
39°F
E
9 mph
9 mph
January 01, thursday
0000
41°F
E
13 mph
13 mph
0300
41°F
E
16 mph
16 mph
0600
41°F
E
17 mph
17 mph
0900
41°F
E
21 mph
21 mph
1200
41°F
E
20 mph
20 mph
1500
41°F
E
20 mph
20 mph
1800
43°F
E
16 mph
16 mph
