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Truro, England climate
Cfb Oceanic / temperate
Truro has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 66°F, while the coldest is February averaging around 40°F at night. Around 42 inches of precipitation falls each year, peaking in November (5.2 inches) and easing off in May (2.3 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 countsTruro climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 48 | 51 | 54 | 58 | 62 | 66 | 66 | 63 | 58 | 53 | 50 |
| Avg temp (°F) | 45 | 44 | 46 | 49 | 53 | 57 | 61 | 61 | 58 | 54 | 49 | 46 |
| Avg low (°F) | 41 | 40 | 42 | 44 | 48 | 52 | 56 | 56 | 54 | 50 | 45 | 42 |
| Precipitation (in) | 4.6 | 3.8 | 2.8 | 2.8 | 2.3 | 2.5 | 2.7 | 3.2 | 2.8 | 4.3 | 5.2 | 5.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 48 | 51 | 54 | 58 | 62 |
| Avg temp (°F) | 45 | 44 | 46 | 49 | 53 | 57 |
| Avg low (°F) | 41 | 40 | 42 | 44 | 48 | 52 |
| Precipitation (in) | 4.6 | 3.8 | 2.8 | 2.8 | 2.3 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 66 | 66 | 63 | 58 | 53 | 50 |
| Avg temp (°F) | 61 | 61 | 58 | 54 | 49 | 46 |
| Avg low (°F) | 56 | 56 | 54 | 50 | 45 | 42 |
| Precipitation (in) | 2.7 | 3.2 | 2.8 | 4.3 | 5.2 | 5.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 20 | 17 | 16 | 15 | 14 | 14 | 16 | 17 | 16 | 20 | 21 | 20 |
| Days with low ≤ 32°F (days) | 3 | 2 | 1 | 0.1 | — | — | — | — | — | 0.0 | 0.4 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 20 | 17 | 16 | 15 | 14 | 14 |
| Days with low ≤ 32°F (days) | 3 | 2 | 1 | 0.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 16 | 17 | 16 | 20 | 21 | 20 |
| Days with low ≤ 32°F (days) | — | — | — | 0.0 | 0.4 | 2 |
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 (%) | 83 | 83 | 85 | 84 | 86 | 87 | 87 | 86 | 85 | 84 | 83 | 82 |
| Wind speed (mph) | 17.5 | 16.7 | 15.1 | 13.4 | 12.3 | 11.6 | 11.4 | 11.8 | 12.8 | 14.9 | 16.5 | 17.6 |
| 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 (%) | 83 | 83 | 85 | 84 | 86 | 87 |
| Wind speed (mph) | 17.5 | 16.7 | 15.1 | 13.4 | 12.3 | 11.6 |
| 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 (%) | 87 | 86 | 85 | 84 | 83 | 82 |
| Wind speed (mph) | 11.4 | 11.8 | 12.8 | 14.9 | 16.5 | 17.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Camborne, a weather station, about 19 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.