Current sea water temperature:
+43.9°F
| Minimum sea water temperature in December: | 51.8°F |
| Maximum sea water temperature in December: | 41.7°F |
| Average sea water temperature in December: | 46.7°F |
| more information | |
14 days
forecast
forecast
| London |
monthly
weather
weather
| London |
Sea water temperature for the last 10 days:
| December 27 | 43.9°F | December 22 | 47.8°F |
| December 26 | 45.1°F | December 21 | 47.8°F |
| December 25 | 45.0°F | December 20 | 46.6°F |
| December 24 | 47.7°F | December 19 | 46.2°F |
| December 23 | 47.7°F | December 18 | 46.6°F |
Monthly sea water temperature, °F
When is the warmest sea in London?
Based on the data about daily sea water temperature for the last three years the warmest sea in London was noticed in August, July and September.
Monthly Sea Temperatures in London, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 66.7°F. The highest and lowest sea temperatures during the month were 68.5°F and 64.6°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.0°F. The highest and lowest sea temperatures during the month were 70.2°F and 66.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 62.9°F. The highest and lowest sea temperatures during the month were 65.8°F and 59.2°F.
current
weather
weather
| London |
weather in
January
January
| London |
Best time for vacation in London
London on a weather map
Places in United Kingdom:
Name
°F
24 Hours Forecast
London
Local time: 23:57
December 28, sunday
0000
45°F
SW
9 mph
9 mph
0300
43°F
SW
9 mph
9 mph
0600
41°F
SW
8 mph
8 mph
0900
43°F
SW
11 mph
11 mph
1200
45°F
SW
10 mph
10 mph
1500
45°F
SW
10 mph
10 mph
1800
43°F
SW
11 mph
11 mph
2100
43°F
SW
9 mph
9 mph
