Plymouth climate — normals and trends
Plymouth (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.3 °C and it receives 900 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (16.2 °C on average) and the coldest is February (7.0 °C). Rainfall peaks in December.
Plymouth averages 2 frost days, 0 hot days (≥ 30 °C) and 148 rainy days per year.
Plymouth has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The number of frost days there went from about 4 to 0 per year over the period.
The hottest day of the period reached 24.5 °C (on 14 August 2022) and the coldest -5.1 °C (on 13 January 1987).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
PlymouthEngland
- coords
- 50.37°, -4.14°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.3°C
Average daily high
12.6°C
Average daily low
10.0°C
Annual rainfall
900mm
Sunshine / day
8.4h
Mean relative humidity
82%
Average peak wind
30.5km/h
Seasonal range
9.2°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
3.1 cm
Average feels-like high
9.6 °C
Average feels-like low
5.9 °C
Average peak gust
44.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
24.5 °C
14 August 2022
Coldest day
-5.1 °C
13 January 1987
Wettest day
60 mm
27 December 1979
Windiest day
87.3 km/h
25 January 1990
Strongest gust
140.8 km/h
4 January 1998
Hottest feels-like
27.5 °C
21 July 2021
Coldest feels-like
-14.9 °C
12 January 1987
Snowiest day
7.7 cm
7 January 1982
Sunniest day
15.8 h
17 June 2010
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 9.1 °C | +0.4 °C | 163 mm | +66 mm |
| Feb | 9.2 °C | +0.9 °C | 91 mm | +14 mm |
| Mar | 10.3 °C | +1.2 °C | 14 mm | -57 mm |
| Apr | 12.5 °C | +2.0 °C | 103 mm | +48 mm |
| May | 15.1 °C | +2.3 °C | 29 mm | -32 mm |
| Jun | 17.0 °C | +1.6 °C | 69 mm | +15 mm |
| Jul | 19.0 °C | +1.8 °C | 35 mm | -20 mm |
| Aug | 18.8 °C | +1.3 °C | 48 mm | -14 mm |
| Sep | 16.2 °C | 0.0 °C | 116 mm | +49 mm |
| Oct | 14.5 °C | +0.5 °C | 104 mm | +10 mm |
| Nov | 12.6 °C | +1.2 °C | 138 mm | +35 mm |
| Dec | 10.8 °C | +1.0 °C | 194 mm | +91 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Plymouth?
Plymouth has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 900 mm of precipitation per year.
What is the hottest day ever recorded in Plymouth?
The hottest day measured in Plymouth between 1940 and 2025 was 14 August 2022, reaching 24.5 °C.
What is the coldest day in Plymouth?
The coldest day measured in Plymouth between 1940 and 2025 was 13 January 1987, at -5.1 °C.
Does it snow in Plymouth?
Yes. Plymouth gets on average 3.1 cm of snow per year and has around 2 frost days.
Has the climate of Plymouth warmed?
Yes: Plymouth warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Plymouth?
The wettest day measured in Plymouth between 1940 and 2025 was 27 December 1979, with 60 mm of rain in 24 hours.
What was the windiest day in Plymouth?
The windiest day measured in Plymouth between 1940 and 2025 was 25 January 1990, with winds reaching 87.3 km/h.
What is the warmest month in Plymouth?
The warmest month in Plymouth is August (16.2 °C on average); the coldest is February (7.0 °C).
How much does it rain in Plymouth?
Plymouth receives on average 900 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Plymouth?
Plymouth gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Plymouth?
The heaviest 24-hour snowfall measured in Plymouth between 1940 and 2025 was 7 January 1982, with 7.7 cm.
Are there tropical nights in Plymouth?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Plymouth.
What was the most extreme apparent temperature in Plymouth?
In Plymouth, between 1940 and 2025, the highest apparent temperature reached 27.5 °C on 21 July 2021, and the lowest was -14.9 °C on 12 January 1987.
Compare Plymouth with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Plymouth