Current sea water temperature:
+54.3°F
| Minimum sea water temperature in May: | 57.7°F |
| Maximum sea water temperature in May: | 48.7°F |
| Average sea water temperature in May: | 53.3°F |
| more information | |
14 days
forecast
forecast
| Plymouth |
monthly
weather
weather
| Plymouth |
Sea water temperature for the last 10 days:
| May 16 | 54.3°F | May 11 | 54.9°F |
| May 15 | 54.1°F | May 10 | 54.5°F |
| May 14 | 54.5°F | May 9 | 53.8°F |
| May 13 | 55.0°F | May 8 | 54.1°F |
| May 12 | 54.9°F | May 7 | 54.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Plymouth?
Based on the data about daily sea water temperature for the last three years the warmest sea in Plymouth was noticed in August, September and July.
Monthly Sea Temperatures in Plymouth, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.3°F. The highest and lowest sea temperatures during the month were 64.4°F and 61.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 61.5°F. The highest and lowest sea temperatures during the month were 63.7°F and 59.2°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 62.3°F. The highest and lowest sea temperatures during the month were 63.9°F and 59.7°F.
current
weather
weather
| Plymouth |
weather in
May
May
| Plymouth |
Best time for vacation in Plymouth
Plymouth on a weather map
Places in United Kingdom:
Name
°F
24 Hours Forecast
Plymouth
Local time: 06:18
May 17, sunday
0900
50°F
SE
10 mph
10 mph
1200
54°F
E
12 mph
12 mph
1500
54°F
E
15 mph
15 mph
1800
52°F
E
15 mph
15 mph
2100
48°F
E
14 mph
14 mph
May 18, monday
0000
48°F
E
13 mph
13 mph
0300
48°F
E
16 mph
16 mph
0600
48°F
E
12 mph
12 mph
