Current sea water temperature:
+46.6°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 18 | 46.6°F | December 13 | 48.0°F |
| December 17 | 46.8°F | December 12 | 48.2°F |
| December 16 | 48.4°F | December 11 | 47.3°F |
| December 15 | 47.7°F | December 10 | 46.9°F |
| December 14 | 47.7°F | December 9 | 47.1°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
December
December
| London |
Best time for vacation in London
London on a weather map
Places in United Kingdom:
Name
°F
24 Hours Forecast
London
Local time: 01:56
December 19, friday
0300
48°F
E
9 mph
9 mph
0600
46°F
NE
11 mph
11 mph
0900
45°F
NE
11 mph
11 mph
1200
48°F
NE
11 mph
11 mph
1500
48°F
NE
10 mph
10 mph
1800
46°F
NE
8 mph
8 mph
2100
45°F
NE
6 mph
6 mph
December 20, saturday
0000
43°F
N
4 mph
4 mph
