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Dumfries, Scotland climate
Cfb Oceanic / temperate
Dumfries has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 18°C, while the coldest is January averaging around 2°C at night. Around 1075 mm of precipitation falls each year, peaking in October (124 mm) and easing off in April (56 mm). At latitude 55°N, day length swings from 7.0 hours in midwinter to 17.0 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 figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Dumfries climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 7 | 8 | 11 | 14 | 16 | 18 | 17 | 16 | 12 | 9 | 7 |
| Avg temp (°C) | 4 | 5 | 6 | 8 | 10 | 13 | 15 | 14 | 13 | 10 | 7 | 5 |
| Avg low (°C) | 2 | 2 | 3 | 4 | 7 | 10 | 11 | 11 | 10 | 7 | 5 | 3 |
| Precipitation (mm) | 104 | 80 | 74 | 56 | 63 | 74 | 83 | 109 | 84 | 124 | 119 | 106 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 6 | 7 | 8 | 11 | 14 | 16 |
| Avg temp (°C) | 4 | 5 | 6 | 8 | 10 | 13 |
| Avg low (°C) | 2 | 2 | 3 | 4 | 7 | 10 |
| Precipitation (mm) | 104 | 80 | 74 | 56 | 63 | 74 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 17 | 16 | 12 | 9 | 7 |
| Avg temp (°C) | 15 | 14 | 13 | 10 | 7 | 5 |
| Avg low (°C) | 11 | 11 | 10 | 7 | 5 | 3 |
| Precipitation (mm) | 83 | 109 | 84 | 124 | 119 | 106 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 76 | 77 | 75 | 74 | 78 | 77 | 77 | 75 | 76 | 76 | 75 |
| Relative humidity (%) | 94 | 93 | 91 | 87 | 84 | 85 | 85 | 87 | 88 | 91 | 93 | 94 |
| Wind speed (mph) | 11.2 | 11.0 | 10.2 | 9.0 | 8.6 | 8.0 | 7.7 | 7.9 | 8.7 | 9.7 | 10.1 | 10.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 76 | 77 | 75 | 74 | 78 |
| Relative humidity (%) | 94 | 93 | 91 | 87 | 84 | 85 |
| Wind speed (mph) | 11.2 | 11.0 | 10.2 | 9.0 | 8.6 | 8.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 77 | 75 | 76 | 76 | 75 |
| Relative humidity (%) | 85 | 87 | 88 | 91 | 93 | 94 |
| Wind speed (mph) | 7.7 | 7.9 | 8.7 | 9.7 | 10.1 | 10.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Dundrennan, a weather station, about 39 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.