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Manaus, Brazil climate
Am Tropical monsoon
Manaus has a remarkably steady tropical climate (Tropical monsoon, Köppen Am). The hottest month is September with an average daily high near 93°F, while the coldest is January averaging around 74°F at night. Precipitation totals about 93 inches a year and is strongly seasonal — April alone averages 13.0 inches while August barely receives 2.21 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)Manaus climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 88 | 88 | 88 | 89 | 89 | 91 | 92 | 93 | 93 | 91 | 90 |
| Avg temp (°F) | 80 | 80 | 80 | 80 | 81 | 81 | 82 | 83 | 83 | 83 | 82 | 81 |
| Avg low (°F) | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 76 | 76 | 75 |
| Precipitation (in) | 12.0 | 11.7 | 12.6 | 13.0 | 9.2 | 4.6 | 2.6 | 2.2 | 3.1 | 4.5 | 7.4 | 10.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 88 | 88 | 88 | 89 | 89 |
| Avg temp (°F) | 80 | 80 | 80 | 80 | 81 | 81 |
| Avg low (°F) | 74 | 74 | 75 | 75 | 75 | 75 |
| Precipitation (in) | 12.0 | 11.7 | 12.6 | 13.0 | 9.2 | 4.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 91 | 92 | 93 | 93 | 91 | 90 |
| Avg temp (°F) | 82 | 83 | 83 | 83 | 82 | 81 |
| Avg low (°F) | 75 | 75 | 76 | 76 | 76 | 75 |
| Precipitation (in) | 2.6 | 2.2 | 3.1 | 4.5 | 7.4 | 10.0 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 85 | 87 | 85 | 80 | 67 | 57 | 59 | 69 | 76 | 82 | 82 |
| Relative humidity (%) | 87 | 89 | 89 | 89 | 89 | 89 | 86 | 80 | 74 | 73 | 78 | 84 |
| Wind speed (mph) | 1.4 | 1.5 | 1.5 | 1.4 | 1.4 | 1.5 | 1.6 | 1.6 | 1.5 | 1.4 | 1.3 | 1.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 85 | 87 | 85 | 80 | 67 |
| Relative humidity (%) | 87 | 89 | 89 | 89 | 89 | 89 |
| Wind speed (mph) | 1.4 | 1.5 | 1.5 | 1.4 | 1.4 | 1.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 59 | 69 | 76 | 82 | 82 |
| Relative humidity (%) | 86 | 80 | 74 | 73 | 78 | 84 |
| Wind speed (mph) | 1.6 | 1.6 | 1.5 | 1.4 | 1.3 | 1.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from INMET, Brazil's national meteorological institute, measured at Manaus, inside the city.
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.