Annual mean 9°C · wettest around March · prevailing wind SW
Warmest
24.9 °C
Coldest
-4.3 °C
Wettest
46%
Windiest
5.9 m/s
Prevailing
SW
4.8 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 25°C; January is the coldest, with lows of about -7°C. Plymouth has no sharply defined rainy season: the chance of rain on a given day runs from 44% in January, the driest month, to 47% in March, the wettest. Winds in Plymouth are highest in February, averaging 4.3 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 32% covered; January is the cloudiest month, at 62%.
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
-4°C
-7°C
-10°C
44%
62%
4.1 m/s
0
0
0
February
-2°C
-6°C
-8°C
45%
49%
4.3 m/s
0
0
3
March
3°C
-1°C
-3°C
47%
50%
4.3 m/s
0
0
9
April
9°C
4°C
3°C
47%
52%
4.2 m/s
8
0
30
May
15°C
10°C
12°C
47%
44%
3.6 m/s
35
5
61
June
22°C
16°C
20°C
47%
37%
3.3 m/s
62
24
56
July
25°C
19°C
24°C
46%
32%
2.9 m/s
68
44
38
August
24°C
18°C
23°C
46%
37%
2.9 m/s
73
38
43
September
21°C
14°C
19°C
45%
40%
3.1 m/s
67
17
66
October
13°C
8°C
9°C
47%
49%
3.7 m/s
23
2
52
November
6°C
1°C
-0°C
45%
51%
4.0 m/s
5
0
17
December
-0°C
-3°C
-7°C
45%
61%
4.1 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 -4°C at their warmest in January, its coolest month, and 25°C in July, its warmest; the coolest hours of the day run from -7°C to 19°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around March 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 -2°CLow -5°CRain 45%
Winter in Plymouth has typical daily highs of about -2°C and lows of about -5°C, with a 45% chance of rain on a given day.
Plymouth weather in springMarch to May
High 9°CLow 4°CRain 47%
Spring in Plymouth has typical daily highs of about 9°C and lows of about 4°C, with a 47% chance of rain on a given day.
Plymouth weather in summerJune to August
High 23°CLow 18°CRain 46%
Summer in Plymouth has typical daily highs of about 23°C and lows of about 18°C, with a 46% chance of rain on a given day.
Plymouth weather in autumnSeptember to November
High 13°CLow 8°CRain 46%
Autumn in Plymouth has typical daily highs of about 13°C and lows of about 8°C, with a 46% 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 44% in January, the driest month, to 47% in March, the wettest.
What time of year is Plymouth windiest?
Winds in Plymouth are highest in February, averaging 4.3 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 25°C; January is the coldest, with lows of about -7°C.