16.09
wed
wed
Day
57°F
SE 9 mph
Precip.
19%
19%
Night
54°F
NE 7 mph
Precip.
29%
29%
17.09
thu
thu
Day
63°F
SE 17 mph
Precip.
14%
14%
Night
50°F
E 6 mph
Precip.
27%
27%
18.09
fri
fri
Day
64°F
NE 12 mph
Precip.
8%
8%
Night
61°F
NE 11 mph
Precip.
33%
33%
19.09
sat
sat
Day
64°F
E 13 mph
Precip.
27%
27%
Night
55°F
SE 6 mph
Precip.
21%
21%
20.09
sun
sun
Day
66°F
E 6 mph
Precip.
15%
15%
Night
57°F
S 4 mph
Precip.
18%
18%
21.09
mon
mon
Day
70°F
S 5 mph
Precip.
7%
7%
Night
59°F
S 5 mph
Precip.
14%
14%
22.09
tue
tue
Day
72°F
W 5 mph
Precip.
3%
3%
Night
59°F
W 6 mph
Precip.
23%
23%
23.09
wed
wed
Day
68°F
NW 14 mph
Precip.
7%
7%
Night
55°F
S 2 mph
Precip.
15%
15%
24.09
thu
thu
Day
68°F
SE 9 mph
Precip.
10%
10%
Night
50°F
S 7 mph
Precip.
20%
20%
25.09
fri
fri
Day
66°F
W 7 mph
Precip.
9%
9%
Night
54°F
SW 4 mph
Precip.
17%
17%
26.09
sat
sat
Day
66°F
W 6 mph
Precip.
3%
3%
Night
54°F
S 3 mph
Precip.
10%
10%
27.09
sun
sun
Day
66°F
E 4 mph
Precip.
2%
2%
Night
52°F
S 6 mph
Precip.
20%
20%
28.09
mon
mon
Day
61°F
SE 12 mph
Precip.
18%
18%
Night
57°F
E 13 mph
Precip.
26%
26%
29.09
tue
tue
Day
61°F
SE 22 mph
Precip.
23%
23%
Night
54°F
SE 14 mph
Precip.
18%
18%
sea water
temperature
temperature
| Plymouth |
monthly
weather
weather
| Plymouth |
current
weather
weather
| Plymouth |
7 days
forecast
forecast
| Plymouth |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 64.5°F. The highest and lowest sea temperatures during the month were 65.5°F and 63.1°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: 03:51
September 16, wednesday
0600
52°F
SE
6 mph
6 mph
0900
55°F
SE
11 mph
11 mph
1200
57°F
SE
9 mph
9 mph
1500
61°F
SE
12 mph
12 mph
1800
57°F
E
11 mph
11 mph
2100
55°F
E
6 mph
6 mph
September 17, thursday
0000
54°F
NE
7 mph
7 mph
0300
57°F
E
11 mph
11 mph
