Home › Cities › United Kingdom › England › Plymouth
Plymouth, England climate
Cfb Oceanic / temperate
Plymouth has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 68°F, while the coldest is February averaging around 39°F at night. Around 41 inches of precipitation falls each year, peaking in December (4.9 inches) and easing off in May (2.4 inches). At latitude 50°N, day length swings from 7.8 hours in midwinter to 16.2 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsPlymouth climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 49 | 52 | 56 | 61 | 65 | 68 | 68 | 65 | 59 | 53 | 49 |
| Avg temp (°F) | 44 | 44 | 46 | 50 | 54 | 59 | 62 | 62 | 59 | 54 | 49 | 45 |
| Avg low (°F) | 39 | 39 | 41 | 43 | 48 | 52 | 56 | 56 | 53 | 49 | 44 | 40 |
| Precipitation (in) | 4.3 | 3.5 | 3.1 | 2.7 | 2.4 | 2.6 | 2.4 | 3.1 | 2.9 | 4.3 | 4.7 | 4.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 49 | 52 | 56 | 61 | 65 |
| Avg temp (°F) | 44 | 44 | 46 | 50 | 54 | 59 |
| Avg low (°F) | 39 | 39 | 41 | 43 | 48 | 52 |
| Precipitation (in) | 4.3 | 3.5 | 3.1 | 2.7 | 2.4 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 68 | 68 | 65 | 59 | 53 | 49 |
| Avg temp (°F) | 62 | 62 | 59 | 54 | 49 | 45 |
| Avg low (°F) | 56 | 56 | 53 | 49 | 44 | 40 |
| Precipitation (in) | 2.4 | 3.1 | 2.9 | 4.3 | 4.7 | 4.9 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 21 | 18 | 17 | 15 | 15 | 14 | 15 | 17 | 17 | 21 | 21 | 21 |
| Days with low ≤ 32°F (days) | 4 | 5 | 2 | 0.5 | — | — | — | — | — | 0.1 | 1 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 21 | 18 | 17 | 15 | 15 | 14 |
| Days with low ≤ 32°F (days) | 4 | 5 | 2 | 0.5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 15 | 17 | 17 | 21 | 21 | 21 |
| Days with low ≤ 32°F (days) | — | — | — | 0.1 | 1 | 4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 76 | 72 | 67 | 66 | 67 | 69 | 70 | 67 | 73 | 76 | 76 |
| Clear days (≤ 30% cloud) | 2 | 1 | 3 | 4 | 4 | 4 | 3 | 2 | 3 | 1 | 1.0 | 1 |
| Partly cloudy days (30–70%) | 7 | 8 | 9 | 10 | 11 | 9 | 9 | 12 | 12 | 11 | 8 | 8 |
| Cloudy days (≥ 70%) | 22 | 19 | 19 | 16 | 17 | 17 | 18 | 17 | 15 | 19 | 21 | 21 |
| Relative humidity (%) | 90 | 89 | 89 | 86 | 85 | 85 | 85 | 85 | 86 | 88 | 89 | 90 |
| Wind speed (mph) | 12.2 | 11.7 | 10.8 | 9.6 | 9.1 | 8.7 | 8.5 | 8.7 | 9.3 | 10.7 | 11.3 | 12.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 76 | 72 | 67 | 66 | 67 |
| Clear days (≤ 30% cloud) | 2 | 1 | 3 | 4 | 4 | 4 |
| Partly cloudy days (30–70%) | 7 | 8 | 9 | 10 | 11 | 9 |
| Cloudy days (≥ 70%) | 22 | 19 | 19 | 16 | 17 | 17 |
| Relative humidity (%) | 90 | 89 | 89 | 86 | 85 | 85 |
| Wind speed (mph) | 12.2 | 11.7 | 10.8 | 9.6 | 9.1 | 8.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 70 | 67 | 73 | 76 | 76 |
| Clear days (≤ 30% cloud) | 3 | 2 | 3 | 1 | 1.0 | 1 |
| Partly cloudy days (30–70%) | 9 | 12 | 12 | 11 | 8 | 8 |
| Cloudy days (≥ 70%) | 18 | 17 | 15 | 19 | 21 | 21 |
| Relative humidity (%) | 85 | 85 | 86 | 88 | 89 | 90 |
| Wind speed (mph) | 8.5 | 8.7 | 9.3 | 10.7 | 11.3 | 12.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Plymouth: Mountbatten, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.