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Manaus Weather by Month
Average temperatures, rainfall and humidity for Manaus, Brazil, month by month, built from OpenWeather's historical records. Use it to see what a typical Manaus month looks like before you travel — then check the live Manaus forecast for the days ahead.
Warmest month
September
34°C average high
Coolest month
January
24°C average low
Wettest month
March
134 mm of rain
Driest month
August
28 mm of rain
Average temperature and rainfall in Manaus by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 31°C | 24°C | 21°C / 38°C | 89 mm | 83% | 7 km/h |
| February | 30°C | 24°C | 21°C / 36°C | 97 mm | 83% | 8 km/h |
| March | 30°C | 24°C | 21°C / 35°C | 134 mm | 84% | 8 km/h |
| April | 30°C | 24°C | 22°C / 34°C | 97 mm | 84% | 7 km/h |
| May | 30°C | 24°C | 21°C / 34°C | 87 mm | 84% | 7 km/h |
| June | 31°C | 24°C | 20°C / 34°C | 49 mm | 81% | 7 km/h |
| July | 32°C | 24°C | 21°C / 36°C | 31 mm | 75% | 7 km/h |
| August | 33°C | 25°C | 21°C / 38°C | 28 mm | 71% | 8 km/h |
| September | 34°C | 25°C | 22°C / 39°C | 42 mm | 71% | 8 km/h |
| October | 33°C | 25°C | 19°C / 39°C | 64 mm | 73% | 7 km/h |
| November | 32°C | 25°C | 22°C / 38°C | 73 mm | 77% | 7 km/h |
| December | 31°C | 24°C | 21°C / 38°C | 97 mm | 82% | 7 km/h |
Best time to visit Manaus
The most comfortable time to visit Manaus is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around March, totalling about 889 mm a year.
Travellers who prefer heat should aim for September, when highs average 34°C. March is the month to avoid if rain would spoil your plans — it averages 134 mm, roughly 5× the rainfall of August.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Manaus forecast for what is happening now.