Measurements:
°C
°F
London
50°F
W 5 mph
Feels like: 48°F
Precip: 10%
World Resorts United Kingdom London Weather

London Sea Water Temperature

Current Sea Water Temperature:
+60.2°F
Maximum Sea Water Temperature in October: 67.6°F
Minimum Sea Water Temperature in October: 52.4°F
Average water temperature in October: 59.1°F

Sea Water Temperature for the Last 10 Days:

October 18 60.2°F October 13 60.8°F
October 17 60.8°F October 12 61.8°F
October 16 61.2°F October 11 62.4°F
October 15 62.2°F October 10 64.2°F
October 14 62.4°F October 09 64.4°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 +36
Bournemouth +50
Brighton +56
Bristol +46
Edinburgh +40
Gibraltar +66
Glasgow +34
Liverpool +52
London +50
Middlesbrough +52
Plymouth +46
Scarborough +54
Torquay +46
York +54
24 Hours Weather Forecast
London
Local time: 06:01
19 oct, monday
0900 50°F
W
5 mph
1200 56°F
W
6 mph
1500 58°F
W
7 mph
1800 56°F
W
6 mph
2100 56°F
SW
3 mph
20 oct, tuesday
0000 58°F
W
6 mph
0300 58°F
W
9 mph
0600 56°F
W
9 mph