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Santarém, Portugal climate
Csa Hot-summer Mediterranean
Santarém has a mildly seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 29°C, while the coldest is January averaging around 8°C at night. Precipitation totals about 673 mm a year and is strongly seasonal — November alone averages 111 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)Santarém climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 16 | 18 | 20 | 23 | 26 | 28 | 29 | 27 | 22 | 18 | 15 |
| Avg temp (°C) | 11 | 12 | 14 | 16 | 18 | 21 | 23 | 24 | 22 | 19 | 14 | 12 |
| Avg low (°C) | 8 | 9 | 10 | 12 | 14 | 16 | 18 | 18 | 17 | 15 | 11 | 9 |
| Precipitation (mm) | 86 | 63 | 64 | 56 | 54 | 10 | 4 | 5 | 30 | 93 | 111 | 97 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 16 | 18 | 20 | 23 | 26 |
| Avg temp (°C) | 11 | 12 | 14 | 16 | 18 | 21 |
| Avg low (°C) | 8 | 9 | 10 | 12 | 14 | 16 |
| Precipitation (mm) | 86 | 63 | 64 | 56 | 54 | 10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 29 | 27 | 22 | 18 | 15 |
| Avg temp (°C) | 23 | 24 | 22 | 19 | 14 | 12 |
| Avg low (°C) | 18 | 18 | 17 | 15 | 11 | 9 |
| Precipitation (mm) | 4 | 5 | 30 | 93 | 111 | 97 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 58 | 58 | 58 | 53 | 48 | 43 | 41 | 48 | 57 | 60 | 62 |
| Relative humidity (%) | 83 | 81 | 79 | 78 | 77 | 77 | 78 | 78 | 79 | 81 | 82 | 84 |
| Wind speed (km/h) | 14.7 | 14.9 | 14.7 | 14.9 | 14.7 | 14.8 | 15.8 | 14.6 | 13.0 | 13.6 | 14.8 | 15.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 58 | 58 | 58 | 53 | 48 |
| Relative humidity (%) | 83 | 81 | 79 | 78 | 77 | 77 |
| Wind speed (km/h) | 14.7 | 14.9 | 14.7 | 14.9 | 14.7 | 14.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 43 | 41 | 48 | 57 | 60 | 62 |
| Relative humidity (%) | 78 | 78 | 79 | 81 | 82 | 84 |
| Wind speed (km/h) | 15.8 | 14.6 | 13.0 | 13.6 | 14.8 | 15.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Lisboa/gago Coutinho, a weather station, about 65 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.