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Portalegre, Portugal climate
Csa Hot-summer Mediterranean
Portalegre has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 31°C, while the coldest is January averaging around 6°C at night. Precipitation totals about 768 mm a year and is strongly seasonal — October alone averages 120 mm while July barely receives 4 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)Portalegre climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 12 | 13 | 16 | 18 | 22 | 27 | 31 | 31 | 27 | 21 | 15 | 12 |
| Avg temp (°C) | 9 | 10 | 12 | 13 | 17 | 21 | 24 | 25 | 22 | 17 | 12 | 10 |
| Avg low (°C) | 6 | 6 | 8 | 9 | 12 | 15 | 18 | 18 | 16 | 13 | 9 | 7 |
| Precipitation (mm) | 96 | 75 | 79 | 71 | 64 | 16 | 4 | 8 | 36 | 120 | 107 | 93 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 12 | 13 | 16 | 18 | 22 | 27 |
| Avg temp (°C) | 9 | 10 | 12 | 13 | 17 | 21 |
| Avg low (°C) | 6 | 6 | 8 | 9 | 12 | 15 |
| Precipitation (mm) | 96 | 75 | 79 | 71 | 64 | 16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 27 | 21 | 15 | 12 |
| Avg temp (°C) | 24 | 25 | 22 | 17 | 12 | 10 |
| Avg low (°C) | 18 | 18 | 16 | 13 | 9 | 7 |
| Precipitation (mm) | 4 | 8 | 36 | 120 | 107 | 93 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 50 | 51 | 55 | 50 | 36 | 22 | 25 | 38 | 50 | 51 | 57 |
| Relative humidity (%) | 88 | 84 | 79 | 75 | 68 | 56 | 43 | 42 | 52 | 69 | 83 | 88 |
| Wind speed (km/h) | 8.7 | 8.8 | 9.1 | 9.3 | 9.0 | 9.7 | 10.8 | 10.3 | 9.0 | 9.0 | 9.0 | 9.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 50 | 51 | 55 | 50 | 36 |
| Relative humidity (%) | 88 | 84 | 79 | 75 | 68 | 56 |
| Wind speed (km/h) | 8.7 | 8.8 | 9.1 | 9.3 | 9.0 | 9.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 22 | 25 | 38 | 50 | 51 | 57 |
| Relative humidity (%) | 43 | 42 | 52 | 69 | 83 | 88 |
| Wind speed (km/h) | 10.8 | 10.3 | 9.0 | 9.0 | 9.0 | 9.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Portalegre, 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.