Current sea water temperature:
+46.9°F
| Minimum sea water temperature in December: | 51.1°F |
| Maximum sea water temperature in December: | 43.9°F |
| Average sea water temperature in December: | 46.8°F |
| more information | |
14 days
forecast
forecast
| Rotterdam |
monthly
weather
weather
| Rotterdam |
Sea water temperature for the last 10 days:
| December 21 | 46.9°F | December 16 | 46.8°F |
| December 20 | 47.3°F | December 15 | 46.9°F |
| December 19 | 47.1°F | December 14 | 47.3°F |
| December 18 | 47.3°F | December 13 | 47.7°F |
| December 17 | 46.8°F | December 12 | 47.8°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
December
December
| Rotterdam |
Best time for vacation in Rotterdam
Rotterdam on a weather map
Places in Netherlands:
Name
°F
24 Hours Forecast
Rotterdam
Local time: 02:59
December 22, monday
0300
45°F
W
12 mph
12 mph
0600
43°F
W
9 mph
9 mph
0900
41°F
W
9 mph
9 mph
1200
45°F
W
8 mph
8 mph
1500
45°F
W
8 mph
8 mph
1800
41°F
W
9 mph
9 mph
2100
41°F
W
9 mph
9 mph
December 23, tuesday
0000
39°F
W
9 mph
9 mph
