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La Rochelle, Nouvelle-Aquitaine climate
Cfb Oceanic / temperate
La Rochelle has a mildly seasonal mild-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 23°C, while the coldest is January averaging around 6°C at night. Around 686 mm of precipitation falls each year, peaking in November (91 mm) and easing off in June (36 mm).
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 countsLa Rochelle climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 10 | 13 | 15 | 18 | 21 | 22 | 23 | 21 | 18 | 14 | 11 |
| Avg temp (°C) | 8 | 8 | 10 | 12 | 15 | 18 | 20 | 20 | 18 | 15 | 11 | 9 |
| Avg low (°C) | 6 | 6 | 8 | 10 | 13 | 16 | 17 | 18 | 16 | 13 | 9 | 7 |
| Precipitation (mm) | 69 | 50 | 49 | 53 | 44 | 36 | 39 | 42 | 58 | 73 | 91 | 82 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 10 | 13 | 15 | 18 | 21 |
| Avg temp (°C) | 8 | 8 | 10 | 12 | 15 | 18 |
| Avg low (°C) | 6 | 6 | 8 | 10 | 13 | 16 |
| Precipitation (mm) | 69 | 50 | 49 | 53 | 44 | 36 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 23 | 21 | 18 | 14 | 11 |
| Avg temp (°C) | 20 | 20 | 18 | 15 | 11 | 9 |
| Avg low (°C) | 17 | 18 | 16 | 13 | 9 | 7 |
| Precipitation (mm) | 39 | 42 | 58 | 73 | 91 | 82 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 16 | 15 | 14 | 12 | 11 | 12 | 12 | 17 | 19 | 19 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.3 | 0.3 | 0.2 | — | — | — | — |
| Days with low ≤ 0°C (days) | 3 | 2 | 0.4 | — | — | — | — | — | — | — | 0.4 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 16 | 15 | 14 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.3 |
| Days with low ≤ 0°C (days) | 3 | 2 | 0.4 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 12 | 12 | 17 | 19 | 19 |
| Days with high ≥ 32°C (days) | 0.3 | 0.2 | — | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | — | 0.4 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 64 | 62 | 62 | 63 | 59 | 53 | 52 | 53 | 63 | 67 | 67 |
| Clear days (≤ 30% cloud) | 3 | 4 | 6 | 5 | 5 | 6 | 8 | 8 | 8 | 5 | 3 | 3 |
| Partly cloudy days (30–70%) | 10 | 10 | 10 | 10 | 10 | 11 | 13 | 13 | 11 | 11 | 11 | 11 |
| Cloudy days (≥ 70%) | 18 | 14 | 15 | 14 | 16 | 13 | 10 | 10 | 10 | 15 | 16 | 17 |
| Relative humidity (%) | 88 | 85 | 83 | 80 | 80 | 78 | 76 | 75 | 76 | 82 | 85 | 88 |
| Wind speed (mph) | 10.8 | 10.4 | 9.6 | 9.0 | 8.4 | 8.0 | 7.9 | 7.7 | 8.3 | 9.6 | 10.5 | 11.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 64 | 62 | 62 | 63 | 59 |
| Clear days (≤ 30% cloud) | 3 | 4 | 6 | 5 | 5 | 6 |
| Partly cloudy days (30–70%) | 10 | 10 | 10 | 10 | 10 | 11 |
| Cloudy days (≥ 70%) | 18 | 14 | 15 | 14 | 16 | 13 |
| Relative humidity (%) | 88 | 85 | 83 | 80 | 80 | 78 |
| Wind speed (mph) | 10.8 | 10.4 | 9.6 | 9.0 | 8.4 | 8.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 52 | 53 | 63 | 67 | 67 |
| Clear days (≤ 30% cloud) | 8 | 8 | 8 | 5 | 3 | 3 |
| Partly cloudy days (30–70%) | 13 | 13 | 11 | 11 | 11 | 11 |
| Cloudy days (≥ 70%) | 10 | 10 | 10 | 15 | 16 | 17 |
| Relative humidity (%) | 76 | 75 | 76 | 82 | 85 | 88 |
| Wind speed (mph) | 7.9 | 7.7 | 8.3 | 9.6 | 10.5 | 11.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Pte DE Chassiron, a weather station, about 24 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.