26.08
wed
wed
Day
72°F
N 12 mph
Precip.
10%
10%
Night
63°F
W 12 mph
Precip.
34%
34%
27.08
thu
thu
Day
70°F
N 9 mph
Precip.
19%
19%
Night
55°F
NE 3 mph
Precip.
25%
25%
28.08
fri
fri
Day
66°F
NE 16 mph
Precip.
25%
25%
Night
59°F
NE 7 mph
Precip.
39%
39%
29.08
sat
sat
Day
64°F
NE 27 mph
Precip.
51%
51%
Night
59°F
E 13 mph
Precip.
24%
24%
30.08
sun
sun
Day
63°F
NE 19 mph
Precip.
71%
71%
Night
55°F
E 15 mph
Precip.
32%
32%
31.08
mon
mon
Day
64°F
E 12 mph
Precip.
15%
15%
Night
57°F
NE 6 mph
Precip.
26%
26%
01.09
tue
tue
Day
64°F
E 16 mph
Precip.
42%
42%
Night
52°F
E 4 mph
Precip.
16%
16%
sea water
temperature
temperature
| Plymouth |
monthly
weather
weather
| Plymouth |
current
weather
weather
| Plymouth |
14 days
forecast
forecast
| Plymouth |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 65.3°F. The highest and lowest sea temperatures during the month were 66.6°F and 63.5°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.
Air temperature in Plymouth, °F
Precipitation total in Plymouth, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Plymouth
Plymouth on a weather map
Places in United Kingdom:
Name
°F
24 Hours Forecast
Plymouth
Local time: 17:24
August 26, wednesday
1800
73°F
NW
11 mph
11 mph
2100
63°F
W
6 mph
6 mph
August 27, thursday
0000
63°F
W
12 mph
12 mph
0300
63°F
NW
7 mph
7 mph
0600
63°F
NW
8 mph
8 mph
0900
63°F
N
8 mph
8 mph
1200
70°F
N
9 mph
9 mph
1500
70°F
N
13 mph
13 mph
