Home › Cities › Brazil › Boa Vista
Boa Vista, Brazil climate
As Tropical savanna (dry summer)
Boa Vista has a remarkably steady tropical climate (Tropical savanna (dry summer), Köppen As). The hottest month is October with an average daily high near 36°C, while the coldest is June averaging around 24°C at night. Precipitation totals about 1754 mm a year and is strongly seasonal — May alone averages 347 mm while January barely receives 29 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)Boa Vista climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | — | 34 | 35 | 34 | 32 | 32 | 32 | 33 | 35 | 36 | 35 | 34 |
| Avg temp (°C) | — | 29 | 29 | 29 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 24 | 24 | 25 | 25 | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 25 |
| Precipitation (mm) | 29 | 32 | 39 | 147 | 347 | 336 | 308 | 221 | 98 | 67 | 70 | 60 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | — | 34 | 35 | 34 | 32 | 32 |
| Avg temp (°C) | — | 29 | 29 | 29 | 27 | 27 |
| Avg low (°C) | 24 | 24 | 25 | 25 | 24 | 24 |
| Precipitation (mm) | 29 | 32 | 39 | 147 | 347 | 336 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 33 | 35 | 36 | 35 | 34 |
| Avg temp (°C) | 27 | 28 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 23 | 24 | 25 | 25 | 25 | 25 |
| Precipitation (mm) | 308 | 221 | 98 | 67 | 70 | 60 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 67 | 67 | 75 | 78 | 73 | 70 | 65 | 57 | 59 | 63 | 62 |
| Relative humidity (%) | 59 | 56 | 56 | 68 | 81 | 85 | 86 | 84 | 81 | 76 | 73 | 68 |
| Wind speed (km/h) | 11.1 | 12.0 | 10.9 | 8.5 | 6.5 | 5.7 | 5.1 | 5.2 | 5.5 | 5.8 | 6.4 | 9.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 67 | 67 | 75 | 78 | 73 |
| Relative humidity (%) | 59 | 56 | 56 | 68 | 81 | 85 |
| Wind speed (km/h) | 11.1 | 12.0 | 10.9 | 8.5 | 6.5 | 5.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 65 | 57 | 59 | 63 | 62 |
| Relative humidity (%) | 86 | 84 | 81 | 76 | 73 | 68 |
| Wind speed (km/h) | 5.1 | 5.2 | 5.5 | 5.8 | 6.4 | 9.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from INMET, Brazil's national meteorological institute, measured at Boa Vista, 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.