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Dieppe, Normandy climate
Cfb Oceanic / temperate
Dieppe has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 21°C, while the coldest is January averaging around 3°C at night. Precipitation is fairly even year-round, totalling about 641 mm.
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)Dieppe climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 9 | 11 | 13 | 16 | 19 | 21 | 21 | 19 | 16 | 12 | 9 |
| Avg temp (°C) | 5 | 6 | 8 | 10 | 13 | 16 | 17 | 18 | 16 | 13 | 9 | 6 |
| Avg low (°C) | 3 | 3 | 5 | 6 | 9 | 12 | 14 | 14 | 12 | 9 | 6 | 4 |
| Precipitation (mm) | 50 | 46 | 37 | 41 | 47 | 45 | 51 | 59 | 55 | 74 | 69 | 68 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 9 | 11 | 13 | 16 | 19 |
| Avg temp (°C) | 5 | 6 | 8 | 10 | 13 | 16 |
| Avg low (°C) | 3 | 3 | 5 | 6 | 9 | 12 |
| Precipitation (mm) | 50 | 46 | 37 | 41 | 47 | 45 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 19 | 16 | 12 | 9 |
| Avg temp (°C) | 17 | 18 | 16 | 13 | 9 | 6 |
| Avg low (°C) | 14 | 14 | 12 | 9 | 6 | 4 |
| Precipitation (mm) | 51 | 59 | 55 | 74 | 69 | 68 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 70 | 66 | 69 | 67 | 64 | 65 | 63 | 69 | 73 | 74 |
| Relative humidity (%) | 90 | 88 | 86 | 83 | 83 | 83 | 83 | 83 | 83 | 86 | 89 | 90 |
| Wind speed (m/s) | 5.2 | 4.9 | 4.4 | 3.8 | 3.7 | 3.5 | 3.5 | 3.5 | 3.9 | 4.5 | 4.8 | 5.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 70 | 66 | 69 | 67 |
| Relative humidity (%) | 90 | 88 | 86 | 83 | 83 | 83 |
| Wind speed (m/s) | 5.2 | 4.9 | 4.4 | 3.8 | 3.7 | 3.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 63 | 69 | 73 | 74 |
| Relative humidity (%) | 83 | 83 | 83 | 86 | 89 | 90 |
| Wind speed (m/s) | 3.5 | 3.5 | 3.9 | 4.5 | 4.8 | 5.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Dieppe, a weather station, about 2 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.