19.09
sat
sat
Day
59°F
SW 11 mph
Precip.
2%
2%
Night
50°F
N 4 mph
Precip.
11%
11%
20.09
sun
sun
Day
61°F
N 6 mph
Precip.
14%
14%
Night
59°F
NW 8 mph
Precip.
54%
54%
21.09
mon
mon
Day
57°F
SW 14 mph
Precip.
42%
42%
Night
61°F
SW 15 mph
Precip.
17%
17%
22.09
tue
tue
Day
55°F
SW 16 mph
Precip.
16%
16%
Night
57°F
W 16 mph
Precip.
14%
14%
23.09
wed
wed
Day
59°F
SW 20 mph
Precip.
15%
15%
Night
59°F
SW 19 mph
Precip.
20%
20%
24.09
thu
thu
Day
57°F
SW 19 mph
Precip.
71%
71%
Night
55°F
SW 21 mph
Precip.
76%
76%
25.09
fri
fri
Day
54°F
NW 13 mph
Precip.
37%
37%
Night
55°F
NE 6 mph
Precip.
13%
13%
sea water
temperature
temperature
| Plymouth |
monthly
weather
weather
| Plymouth |
current
weather
weather
| Plymouth |
14 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 65.7°F. The highest and lowest sea temperatures during the month were 68.2°F and 63.5°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 58.7°F. The highest and lowest sea temperatures during the month were 63.3°F and 55.0°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 USA:
Name
°F
24 Hours Forecast
Plymouth
Local time: 06:12
September 19, saturday
0900
57°F
SW
11 mph
11 mph
1200
59°F
SW
11 mph
11 mph
1500
59°F
SW
9 mph
9 mph
1800
55°F
W
6 mph
6 mph
2100
54°F
NW
7 mph
7 mph
September 20, sunday
0000
50°F
N
4 mph
4 mph
0300
50°F
N
3 mph
3 mph
0600
50°F
NW
4 mph
4 mph
