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Plymouth weather in January

Weather in Plymouth: January

Average day temperature: 47.1°F
Average night temperature: 43.1°F
Sea water temperature: 50.6°F
Number of sunny days: 6 days
Day length: 8.1 - 9.2 hours
Number of rainy days: 7 days
Precipitation totals: 3.1 in.

Air temperature in January, °F

Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
9
18
27
36
45
54
63
72
Day temperature   
Night temperature

The highest day temperature during January of 2025 was 53°F. At the same time the lowest night temperature was 32°F. Day and night temperature averages during January were 45.1°F and 42.8°F.

Sea water temperature in Plymouth in January, °F

Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
44
46
48
50
52
54
56
58

The average sea water temperature in January of 2025 was 50.8°F. The highest and lowest sea temperatures during the month were 52.0°F and 49.8°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
16%
29%
55%

Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in January, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.6
1.2
1.9
2.5
3.1
3.7
4.3
3.6
3.2
3.1
1.9
2.2
1.9
2.2
2.1
2.0
3.1
2.6
3.6
3.2
3.1
1.9
2.2
1.9
2.2
2.1
2.0
3.1
2.6
2.8

Precipitation total value in Plymouth in January is 2.8 in. Other months of the year show relatively similar values.

Wind speed in January, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.9
5.7
8.6
11.4
14.3
17.2
20.0
15.7
14.6
13.1
11.6
11.3
10.6
10.6
11.0
12.0
15.5
16.7
15.7
14.6
13.1
11.6
11.3
10.6
10.6
11.0
12.0
15.5
16.7
15.0

The average wind speed value in January is 15.0 mph It makes January one of the most windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.4
2.8
4.3
5.7
7.1
8.5
9.9
2.4
3.3
4.3
6.2
7.4
7.7
8.3
6.7
6.3
4.4
3.7
2.4
3.3
4.3
6.2
7.4
7.7
8.3
6.7
6.3
4.4
3.7
3.5

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 3.5.

Best time for vacation in Plymouth

Sunniest months:
July 9 days
September 9 days
April 9 days
Warmest months:
July 65.8 °F
August 65.6 °F
September 62.8 °F
Warmest sea temp:
August 61.6 °F
September 61.2 °F
July 60.6 °F
Coldest months:
January 47.1 °F
February 47.5 °F
March 49.4 °F
Rainiest months:
January 7 days
October 7 days
December 7 days
Windiest months:
December 16.6 mph
February 16.6 mph
January 15.6 mph

Plymouth on a weather map

Leaflet | Tiles © Esri
Places in United Kingdom:
Name
°F
+48°F
+48°F
+50°F
+50°F
+48°F
+54°F
+46°F
+50°F
+50°F
+50°F
+48°F
+48°F
+48°F
+48°F
+48°F
24 Hours Forecast
Plymouth
Local time: 22:59
February 24, monday
0000
48°F
NE
14 mph
0300
48°F
NE
15 mph
0600
48°F
NE
14 mph
0900
50°F
NE
16 mph
1200
52°F
NE
20 mph
1500
52°F
NE
18 mph
1800
46°F
NE
14 mph
2100
46°F
NE
9 mph
Units of measurement: °C / °F