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Porto Velho, Brazil climate
As Tropical savanna (dry summer)
Porto Velho has a remarkably steady tropical climate (Tropical savanna (dry summer), Köppen As). The hottest month is September with an average daily high near 93°F, while the coldest is July averaging around 70°F at night. Precipitation totals about 64 inches a year and is strongly seasonal — March alone averages 10.9 inches while July barely receives 0.50 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)Porto Velho climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 88 | 88 | 89 | 89 | 90 | 91 | 94 | 93 | 92 | 90 | 88 |
| Avg temp (°F) | 81 | 81 | 81 | 82 | 81 | 81 | 81 | 83 | 83 | 83 | 82 | 81 |
| Avg low (°F) | 74 | 74 | 74 | 74 | 74 | 72 | 70 | 71 | 73 | 74 | 74 | 74 |
| Precipitation (in) | 9.4 | 9.4 | 10.9 | 6.9 | 2.9 | 0.8 | 0.5 | 1.1 | 2.6 | 4.6 | 6.2 | 8.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 88 | 88 | 89 | 89 | 90 |
| Avg temp (°F) | 81 | 81 | 81 | 82 | 81 | 81 |
| Avg low (°F) | 74 | 74 | 74 | 74 | 74 | 72 |
| Precipitation (in) | 9.4 | 9.4 | 10.9 | 6.9 | 2.9 | 0.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 91 | 94 | 93 | 92 | 90 | 88 |
| Avg temp (°F) | 81 | 83 | 83 | 83 | 82 | 81 |
| Avg low (°F) | 70 | 71 | 73 | 74 | 74 | 74 |
| Precipitation (in) | 0.5 | 1.1 | 2.6 | 4.6 | 6.2 | 8.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 88 | 88 | 87 | 80 | 67 | 45 | 32 | 44 | 65 | 78 | 85 | 87 |
| Relative humidity (%) | 91 | 91 | 91 | 91 | 90 | 88 | 81 | 73 | 71 | 76 | 83 | 88 |
| Wind speed (mph) | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.6 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 88 | 88 | 87 | 80 | 67 | 45 |
| Relative humidity (%) | 91 | 91 | 91 | 91 | 90 | 88 |
| Wind speed (mph) | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 32 | 44 | 65 | 78 | 85 | 87 |
| Relative humidity (%) | 81 | 73 | 71 | 76 | 83 | 88 |
| Wind speed (mph) | 0.6 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Governador Jorge Teixeira DE Oliveira, a weather station, about 6 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.