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Bastia, Corsica climate
Csa Hot-summer Mediterranean
Bastia has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 30°C, while the coldest is February averaging around 5°C at night. Precipitation totals about 710 mm a year and is strongly seasonal — November alone averages 115 mm while July barely receives 8 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 countsBastia climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 14 | 16 | 18 | 22 | 26 | 30 | 30 | 26 | 22 | 18 | 15 |
| Avg temp (°C) | 10 | 10 | 11 | 14 | 17 | 21 | 24 | 25 | 21 | 18 | 14 | 11 |
| Avg low (°C) | 5 | 5 | 6 | 9 | 12 | 16 | 19 | 20 | 16 | 13 | 9 | 6 |
| Precipitation (mm) | 61 | 59 | 58 | 63 | 52 | 35 | 8 | 13 | 65 | 104 | 115 | 77 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 14 | 16 | 18 | 22 | 26 |
| Avg temp (°C) | 10 | 10 | 11 | 14 | 17 | 21 |
| Avg low (°C) | 5 | 5 | 6 | 9 | 12 | 16 |
| Precipitation (mm) | 61 | 59 | 58 | 63 | 52 | 35 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 26 | 22 | 18 | 15 |
| Avg temp (°C) | 24 | 25 | 21 | 18 | 14 | 11 |
| Avg low (°C) | 19 | 20 | 16 | 13 | 9 | 6 |
| Precipitation (mm) | 8 | 13 | 65 | 104 | 115 | 77 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 10 | 11 | 12 | 11 | 7 | 3 | 3 | 7 | 12 | 14 | 11 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.3 | 3 | 4 | 0.0 | — | — | — |
| Days with low ≤ 0°C (days) | 0.3 | 0.6 | 0.1 | — | — | — | — | — | — | 0.0 | — | 0.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 10 | 11 | 12 | 11 | 7 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.3 |
| Days with low ≤ 0°C (days) | 0.3 | 0.6 | 0.1 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 7 | 12 | 14 | 11 |
| Days with high ≥ 32°C (days) | 3 | 4 | 0.0 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.0 | — | 0.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 56 | 54 | 54 | 49 | 38 | 26 | 30 | 43 | 52 | 60 | 59 |
| Clear days (≤ 30% cloud) | 6 | 6 | 8 | 9 | 10 | 14 | 21 | 18 | 12 | 10 | 6 | 6 |
| Partly cloudy days (30–70%) | 13 | 11 | 13 | 10 | 12 | 11 | 8 | 10 | 11 | 12 | 12 | 12 |
| Cloudy days (≥ 70%) | 12 | 11 | 11 | 11 | 9 | 5 | 2 | 3 | 6 | 10 | 12 | 13 |
| Relative humidity (%) | 80 | 77 | 75 | 73 | 68 | 61 | 54 | 54 | 64 | 74 | 79 | 80 |
| Wind speed (mph) | 8.1 | 8.1 | 8.3 | 7.3 | 6.2 | 5.6 | 5.6 | 5.3 | 6.5 | 7.2 | 8.1 | 8.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 56 | 54 | 54 | 49 | 38 |
| Clear days (≤ 30% cloud) | 6 | 6 | 8 | 9 | 10 | 14 |
| Partly cloudy days (30–70%) | 13 | 11 | 13 | 10 | 12 | 11 |
| Cloudy days (≥ 70%) | 12 | 11 | 11 | 11 | 9 | 5 |
| Relative humidity (%) | 80 | 77 | 75 | 73 | 68 | 61 |
| Wind speed (mph) | 8.1 | 8.1 | 8.3 | 7.3 | 6.2 | 5.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 26 | 30 | 43 | 52 | 60 | 59 |
| Clear days (≤ 30% cloud) | 21 | 18 | 12 | 10 | 6 | 6 |
| Partly cloudy days (30–70%) | 8 | 10 | 11 | 12 | 12 | 12 |
| Cloudy days (≥ 70%) | 2 | 3 | 6 | 10 | 12 | 13 |
| Relative humidity (%) | 54 | 54 | 64 | 74 | 79 | 80 |
| Wind speed (mph) | 5.6 | 5.3 | 6.5 | 7.2 | 8.1 | 8.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Poretta, a weather station, about 17 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.