Measurements:
°C
°F
Plymouth
46°F
S 6 mph
Feels like: 42°F
Precip: 27%
World Resorts United Kingdom Plymouth Weather

Plymouth Sea Water Temperature

Current Sea Water Temperature:
+63.0°F
Maximum Sea Water Temperature in October: 65.0°F
Minimum Sea Water Temperature in October: 57.6°F
Average water temperature in October: 60.6°F

Sea Water Temperature for the Last 10 Days:

October 18 63.0°F October 13 63.2°F
October 17 63.2°F October 12 63.6°F
October 16 63.4°F October 11 63.2°F
October 15 63.0°F October 10 63.6°F
October 14 63.0°F October 09 64.2°F

When is the Warmest Sea for Plymouth?

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

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 Plymouth was 67.1°F. The maximum and minimum values were 65.0°F and 68.4°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Plymouth was 65.2°F. The maximum and minimum values were 63.8°F and 67.2°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Plymouth was 66.7°F. The maximum and minimum values were 63.6°F and 68.4°F respectively.

Best Time to Visit Plymouth
The most sunny months:
July 10 days
June 9 days
April 9 days
The most warm months:
July 68.1 °F
August 67.8 °F
September 64.2 °F
Warmest sea temperature:
August 63.3 °F
September 62.7 °F
July 62.2 °F
The most cold months:
January 46.7 °F
February 47.3 °F
December 49.5 °F
The most rainy months:
December 7 days
October 7 days
January 7 days
The most windy months:
December 16 mph
February 16 mph
January 16 mph

Plymouth 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
Plymouth
Local time: 05:15
19 oct, monday
0600 46°F
S
6 mph
0900 48°F
SW
7 mph
1200 56°F
W
19 mph
1500 56°F
NW
16 mph
1800 52°F
NW
10 mph
2100 48°F
W
6 mph
20 oct, tuesday
0000 42°F
SW
4 mph
0300 40°F
SW
4 mph