Measurements:
°C
°F
London
48°F
SW 7 mph
Feels like: 44°F
Precip: 54%
World Resorts United Kingdom London Weather

London Sea Water Temperature

Current Sea Water Temperature:
+51.4°F
Maximum Sea Water Temperature in November: 59.2°F
Minimum Sea Water Temperature in November: 46.4°F
Average water temperature in November: 52.4°F

Sea Water Temperature for the Last 10 Days:

November 11 51.4°F November 06 52.8°F
November 10 51.8°F November 05 52.8°F
November 09 52.2°F November 04 53.0°F
November 08 52.0°F November 03 53.8°F
November 07 52.2°F November 02 53.2°F

When is the Warmest Sea for London?

According to our data for the last three years for London the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for London was 72.1°F. The maximum and minimum values were 68.4°F and 74.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for London was 72.3°F. The maximum and minimum values were 70.2°F and 75.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for London was 67.3°F. The maximum and minimum values were 65.2°F and 69.0°F respectively.

Best Time to Visit London
The most sunny months:
July 9 days
May 8 days
April 8 days
The most warm months:
July 76.4 °F
August 75.6 °F
June 71.9 °F
Warmest sea temperature:
August 68.5 °F
July 66.9 °F
September 65.0 °F
The most cold months:
January 43.9 °F
February 46.8 °F
December 47.1 °F
The most rainy months:
December 5 days
August 4 days
October 4 days
The most windy months:
February 11 mph
December 11 mph
January 10 mph

London on the Weather Map

United Kingdom Resorts:
NAME
F°
Bath +46
Belfast +46
Bournemouth +48
Brighton +50
Bristol +46
Edinburgh +40
Gibraltar +64
Glasgow +40
Liverpool +48
London +48
Middlesbrough +46
Plymouth +50
Scarborough +48
Torquay +44
York +48
24 Hours Weather Forecast
London
Local time: 11:26
11 nov, wednesday
1200 48°F
SW
7 mph
1500 48°F
SW
6 mph
1800 48°F
SW
6 mph
2100 46°F
S
6 mph
12 nov, thursday
0000 44°F
S
6 mph
0300 42°F
S
6 mph
0600 40°F
S
7 mph
0900 40°F
S
8 mph