Measurements:
°C
°F
Plymouth
36°F
S 27 mph
Feels like: 24°F
Precip: 100%
World Resorts United Kingdom Plymouth Weather

Plymouth Sea Water Temperature

Current Sea Water Temperature:
+49.6°F
Maximum Sea Water Temperature in February: 50.8°F
Minimum Sea Water Temperature in February: 46.4°F
Average water temperature in February: 48.9°F

Sea Water Temperature for the Last 10 Days:

February 13 49.6°F February 08 49.8°F
February 12 49.2°F February 07 49.8°F
February 11 49.4°F February 06 49.2°F
February 10 49.0°F February 05 49.2°F
February 09 49.8°F February 04 49.0°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Plymouth was 64.8°F. The maximum and minimum values were 62.6°F and 66.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Plymouth was 62.8°F. The maximum and minimum values were 60.2°F and 65.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Plymouth was 63.7°F. The maximum and minimum values were 60.8°F and 65.4°F respectively.

Best Time to Visit Plymouth
The most sunny months:
June 9 days
July 9 days
April 9 days
The most warm months:
July 67.6 °F
August 67.5 °F
September 64.0 °F
Warmest sea temperature:
August 63.0 °F
September 62.5 °F
July 61.9 °F
The most cold months:
January 46.7 °F
February 47.2 °F
March 49.4 °F
The most rainy months:
January 7 days
October 7 days
December 7 days
The most windy months:
December 16 mph
February 16 mph
January 16 mph

Plymouth on the Weather Map

United Kingdom Resorts:
NAME
Bath +34
Belfast +26
Bournemouth +36
Brighton +38
Bristol +34
Edinburgh +28
Gibraltar +50
Glasgow +26
Liverpool +32
London +36
Middlesbrough +32
Plymouth +36
Scarborough +36
Torquay +34
York +32
24 Hours Weather Forecast
Plymouth
Local time: 21:25
14 feb, saturday
0000 36°F
S
24 mph
0300 34°F
S
17 mph
0600 32°F
S
12 mph
0900 36°F
S
9 mph
1200 40°F
S
6 mph
1500 40°F
E
4 mph
1800 38°F
N
9 mph
2100 38°F
N
16 mph