17.05
sun
sun
Day
54°F
E 12 mph
Precip.
73%
73%
Night
48°F
E 13 mph
Precip.
100%
100%
18.05
mon
mon
Day
52°F
NE 17 mph
Precip.
100%
100%
Night
54°F
N 20 mph
Precip.
100%
100%
19.05
tue
tue
Day
57°F
NE 21 mph
Precip.
100%
100%
Night
55°F
NE 18 mph
Precip.
83%
83%
20.05
wed
wed
Day
57°F
NE 17 mph
Precip.
72%
72%
Night
54°F
NE 9 mph
Precip.
0%
0%
21.05
thu
thu
Day
59°F
NE 8 mph
Precip.
68%
68%
Night
55°F
W 9 mph
Precip.
0%
0%
22.05
fri
fri
Day
63°F
N 11 mph
Precip.
0%
0%
Night
57°F
SE 2 mph
Precip.
50%
50%
23.05
sat
sat
Day
64°F
SE 8 mph
Precip.
0%
0%
Night
52°F
NW 8 mph
Precip.
0%
0%
24.05
sun
sun
Day
64°F
W 9 mph
Precip.
58%
58%
Night
55°F
W 4 mph
Precip.
0%
0%
25.05
mon
mon
Day
64°F
W 11 mph
Precip.
0%
0%
Night
55°F
SW 7 mph
Precip.
0%
0%
26.05
tue
tue
Day
64°F
W 16 mph
Precip.
0%
0%
Night
57°F
SW 12 mph
Precip.
0%
0%
27.05
wed
wed
Day
66°F
W 17 mph
Precip.
0%
0%
Night
59°F
SW 15 mph
Precip.
0%
0%
28.05
thu
thu
Day
63°F
W 9 mph
Precip.
0%
0%
Night
54°F
NW 5 mph
Precip.
0%
0%
29.05
fri
fri
Day
59°F
NE 8 mph
Precip.
0%
0%
Night
54°F
SE 11 mph
Precip.
100%
100%
30.05
sat
sat
Day
59°F
SW 11 mph
Precip.
100%
100%
Night
57°F
SW 7 mph
Precip.
22%
22%
sea water
temperature
temperature
| Plymouth |
monthly
weather
weather
| Plymouth |
current
weather
weather
| Plymouth |
7 days
forecast
forecast
| Plymouth |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 54.2°F. The highest and lowest sea temperatures during the month were 55.0°F and 53.4°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: 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
