World Resorts United Kingdom London Weather

London sea water temperature

Current sea water temperature:
+58.6°F
Minimum sea water temperature in October: 65.8°F
Maximum sea water temperature in October: 52.2°F
Average sea water temperature in October: 58.2°F

Sea water temperature for the last 10 days:

October 20 58.6°F October 15 61.0°F
October 19 59.0°F October 14 61.2°F
October 18 59.2°F October 13 59.7°F
October 17 59.7°F October 12 60.6°F
October 16 60.1°F October 11 61.2°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:
2026
2025
2024

The average sea water temperature in August of 2026 was 69.9°F. The highest and lowest sea temperatures during the month were 72.3°F and 66.6°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 70.1°F. The highest and lowest sea temperatures during the month were 72.7°F and 68.2°F.

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 65.6°F. The highest and lowest sea temperatures during the month were 67.1°F and 63.7°F.

Best time for vacation in London

Sunniest months:
July 9 days
May 8 days
April 8 days
Warmest months:
July 73.8 °F
August 73.1 °F
June 69.7 °F
Warmest sea temp:
August 66.6 °F
July 65.3 °F
September 63.5 °F
Coldest months:
January 44.5 °F
February 47.2 °F
December 47.4 °F
Rainiest months:
December 5 days
August 4 days
October 4 days
Windiest months:
February 11.0 mph
December 10.7 mph
January 10.2 mph

London on a weather map

London
+52°F
NE 7 mph
Feels like: +48°F
Precip.: 8%
Places in United Kingdom:
Name
°F
+45°F
+45°F
+52°F
+59°F
+45°F
+63°F
+46°F
+50°F
+52°F
+52°F
+50°F
+52°F
+54°F
+50°F
+48°F
24 Hours Forecast
London
Local time: 00:39
October 21, wednesday
0300
50°F
N
6 mph
0600
50°F
NW
9 mph
0900
52°F
NW
8 mph
1200
48°F
E
16 mph
1500
50°F
E
17 mph
1800
50°F
E
15 mph
2100
48°F
NE
12 mph
October 22, thursday
0000
48°F
NE
12 mph
Units of measurement: °C / °F