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Petrolina, Brazil climate
BSh Hot semi-arid
Petrolina has a remarkably steady tropical climate (Hot semi-arid, Köppen BSh). The hottest month is November with an average daily high near 94°F, while the coldest is July averaging around 68°F at night. Precipitation totals about 16 inches a year and is strongly seasonal — March alone averages 3.3 inches while August barely receives 0.07 inches.
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)Petrolina climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 92 | 92 | 92 | 91 | 89 | 87 | 86 | 87 | 91 | 94 | 94 | 93 |
| Avg temp (°F) | 83 | 83 | 82 | 82 | 80 | 77 | 76 | 77 | 80 | 83 | 84 | 83 |
| Avg low (°F) | 74 | 74 | 75 | 74 | 73 | 70 | 68 | 69 | 70 | 73 | 74 | 75 |
| Precipitation (in) | 3.3 | 3.1 | 3.3 | 1.8 | 0.4 | 0.2 | 0.2 | 0.1 | 0.1 | 0.4 | 1.8 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 92 | 92 | 92 | 91 | 89 | 87 |
| Avg temp (°F) | 83 | 83 | 82 | 82 | 80 | 77 |
| Avg low (°F) | 74 | 74 | 75 | 74 | 73 | 70 |
| Precipitation (in) | 3.3 | 3.1 | 3.3 | 1.8 | 0.4 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 86 | 87 | 91 | 94 | 94 | 93 |
| Avg temp (°F) | 76 | 77 | 80 | 83 | 84 | 83 |
| Avg low (°F) | 68 | 69 | 70 | 73 | 74 | 75 |
| Precipitation (in) | 0.2 | 0.1 | 0.1 | 0.4 | 1.8 | 1.9 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 63 | 63 | 59 | 52 | 44 | 41 | 34 | 31 | 37 | 51 | 55 |
| Relative humidity (%) | 60 | 64 | 64 | 64 | 62 | 63 | 61 | 57 | 51 | 49 | 52 | 55 |
| Wind speed (mph) | 7.0 | 6.8 | 6.6 | 7.5 | 8.8 | 10.0 | 10.7 | 11.4 | 11.5 | 10.6 | 8.8 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 63 | 63 | 59 | 52 | 44 |
| Relative humidity (%) | 60 | 64 | 64 | 64 | 62 | 63 |
| Wind speed (mph) | 7.0 | 6.8 | 6.6 | 7.5 | 8.8 | 10.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 34 | 31 | 37 | 51 | 55 |
| Relative humidity (%) | 61 | 57 | 51 | 49 | 52 | 55 |
| Wind speed (mph) | 10.7 | 11.4 | 11.5 | 10.6 | 8.8 | 7.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from INMET, Brazil's national meteorological institute, measured at Petrolina, about 3 km from the city centre.
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.