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Rouen, Normandy climate
Cfb Oceanic / temperate
Rouen has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 75°F, while the coldest is January averaging around 34°F at night. Precipitation is fairly even year-round, totalling about 31 inches.
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 countsRouen climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 53 | 59 | 65 | 70 | 74 | 75 | 68 | 60 | 51 | 45 |
| Avg temp (°F) | 39 | 41 | 45 | 50 | 56 | 61 | 65 | 65 | 59 | 53 | 45 | 39 |
| Avg low (°F) | 34 | 34 | 38 | 40 | 46 | 51 | 55 | 55 | 50 | 45 | 39 | 35 |
| Precipitation (in) | 2.9 | 2.4 | 2.3 | 1.9 | 2.5 | 2.3 | 2.3 | 2.2 | 2.2 | 2.9 | 3.2 | 3.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 47 | 53 | 59 | 65 | 70 |
| Avg temp (°F) | 39 | 41 | 45 | 50 | 56 | 61 |
| Avg low (°F) | 34 | 34 | 38 | 40 | 46 | 51 |
| Precipitation (in) | 2.9 | 2.4 | 2.3 | 1.9 | 2.5 | 2.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 74 | 75 | 68 | 60 | 51 | 45 |
| Avg temp (°F) | 65 | 65 | 59 | 53 | 45 | 39 |
| Avg low (°F) | 55 | 55 | 50 | 45 | 39 | 35 |
| Precipitation (in) | 2.3 | 2.2 | 2.2 | 2.9 | 3.2 | 3.7 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 16 | 15 | 14 | 15 | 14 | 14 | 14 | 16 | 21 | 20 | 20 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | 0.2 | 0.9 | 1 | 0.0 | — | — | — |
| Days with low ≤ 32°F (days) | 7 | 7 | 5 | 2 | 0.1 | — | — | — | — | 0.4 | 3 | 8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 16 | 15 | 14 | 15 | 14 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | 0.2 |
| Days with low ≤ 32°F (days) | 7 | 7 | 5 | 2 | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 14 | 16 | 21 | 20 | 20 |
| Days with high ≥ 90°F (days) | 0.9 | 1 | 0.0 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | — | 0.4 | 3 | 8 |
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 |
| Clear days (≤ 30% cloud) | 2 | 2 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 2 | 2 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 10 | 9 | 9 | 11 | 11 | 11 | 10 | 9 | 9 |
| Cloudy days (≥ 70%) | 20 | 18 | 19 | 16 | 18 | 17 | 15 | 16 | 15 | 18 | 19 | 20 |
| Relative humidity (%) | 93 | 89 | 85 | 81 | 80 | 79 | 79 | 79 | 81 | 86 | 91 | 93 |
| Wind speed (mph) | 8.6 | 8.3 | 7.7 | 6.7 | 6.5 | 6.2 | 6.0 | 5.8 | 6.2 | 7.2 | 7.4 | 8.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 70 | 66 | 69 | 67 |
| Clear days (≤ 30% cloud) | 2 | 2 | 4 | 4 | 4 | 4 |
| Partly cloudy days (30–70%) | 9 | 8 | 9 | 10 | 9 | 9 |
| Cloudy days (≥ 70%) | 20 | 18 | 19 | 16 | 18 | 17 |
| Relative humidity (%) | 93 | 89 | 85 | 81 | 80 | 79 |
| Wind speed (mph) | 8.6 | 8.3 | 7.7 | 6.7 | 6.5 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 65 | 63 | 69 | 73 | 74 |
| Clear days (≤ 30% cloud) | 5 | 4 | 4 | 3 | 2 | 2 |
| Partly cloudy days (30–70%) | 11 | 11 | 11 | 10 | 9 | 9 |
| Cloudy days (≥ 70%) | 15 | 16 | 15 | 18 | 19 | 20 |
| Relative humidity (%) | 79 | 79 | 81 | 86 | 91 | 93 |
| Wind speed (mph) | 6.0 | 5.8 | 6.2 | 7.2 | 7.4 | 8.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Vallee DE Seine, a weather station, about 9 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.