Annual mean 9°C · wettest around April · prevailing wind SW
Warmest
26.8 °C
Coldest
-8.1 °C
Wettest
34%
Windiest
5.5 m/s
Prevailing
SW
4.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Plymouth over the whole year is 9°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -10°C. Plymouth has no sharply defined rainy season: the chance of rain on a given day runs from 28% in January, the driest month, to 39% in April, the wettest. Winds in Plymouth are highest in April, averaging 4.2 m/s (15 km/h), and lightest in July, at 2.9 m/s (10 km/h). The prevailing wind is from the SW. The clearest skies in Plymouth come in July, when the sky is typically 31% covered; December is the cloudiest month, at 57%.
Month by month Plymouth climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-7°C
-10°C
-12°C
28%
56%
3.4 m/s
0
0
0
February
-4°C
-9°C
-10°C
30%
41%
3.6 m/s
0
0
3
March
4°C
-2°C
-2°C
35%
48%
3.9 m/s
1
0
12
April
10°C
3°C
5°C
39%
52%
4.2 m/s
10
0
38
May
19°C
11°C
15°C
38%
43%
3.5 m/s
51
9
70
June
25°C
18°C
23°C
38%
37%
3.5 m/s
70
36
47
July
27°C
20°C
26°C
37%
31%
2.9 m/s
59
59
25
August
25°C
18°C
24°C
38%
38%
2.9 m/s
72
45
39
September
22°C
14°C
20°C
35%
37%
3.1 m/s
67
22
64
October
13°C
7°C
9°C
35%
46%
3.4 m/s
24
1
55
November
4°C
-0°C
-1°C
33%
50%
3.6 m/s
4
0
16
December
-3°C
-6°C
-9°C
31%
57%
3.4 m/s
0
0
2
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Plymouth weather by season
Year round, Plymouth has days of about -7°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -10°C to 20°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around April and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Plymouth weather in winterDecember to February
High -5°CLow -8°CRain 30%
Winter in Plymouth has typical daily highs of about -5°C and lows of about -8°C, with a 30% chance of rain on a given day.
Plymouth weather in springMarch to May
High 11°CLow 4°CRain 37%
Spring in Plymouth has typical daily highs of about 11°C and lows of about 4°C, with a 37% chance of rain on a given day.
Plymouth weather in summerJune to August
High 26°CLow 18°CRain 38%
Summer in Plymouth has typical daily highs of about 26°C and lows of about 18°C, with a 38% chance of rain on a given day.
Plymouth weather in autumnSeptember to November
High 13°CLow 7°CRain 34%
Autumn in Plymouth has typical daily highs of about 13°C and lows of about 7°C, with a 34% chance of rain on a given day.
When is the rainy season in Plymouth?
Plymouth has no sharply defined rainy season: the chance of rain on a given day runs from 28% in January, the driest month, to 39% in April, the wettest.
What time of year is Plymouth windiest?
Winds in Plymouth are highest in April, averaging 4.2 m/s (15 km/h), and lightest in July, at 2.9 m/s (10 km/h). The prevailing wind is from the SW.
What is the average temperature in Plymouth year round?
The average temperature in Plymouth over the whole year is 9°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -10°C.