Manaus weather in September
September is one of the best months to visit Manaus: highs of 33°C (91°F) and about 68 mm (2.7 in) of rain on average. Nights average 25°C (78°F) and cloud cover 72% (NASA POWER, 2001–2025 averages). It is the 2nd driest month of the year and the warmest. Compared with August, it is warmer and wetter; October brings highs of 33°C (91°F) and 103 mm (4.1 in) of rain.
Is September a good time to visit Manaus?
best month Weather score 68/100.
Yes. September is one of the best months for weather in Manaus.
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Does it rain a lot in Manaus in September?
Some rain is normal: about 68 mm (2.7 in) falls in an average September. It is the 2nd driest month of the year.
How warm is Manaus in September?
Days average 33°C (91°F) and nights 25°C (78°F).
Manaus weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 29°C (83°F) | 24°C (76°F) | 224 mm | 85% | least pleasant |
| February | 28°C (83°F) | 24°C (75°F) | 236 mm | 86% | least pleasant |
| March | 28°C (83°F) | 24°C (75°F) | 268 mm | 87% | least pleasant |
| April | 28°C (83°F) | 24°C (76°F) | 262 mm | 85% | least pleasant |
| May | 28°C (83°F) | 24°C (76°F) | 205 mm | 81% | least pleasant |
| June | 28°C (83°F) | 24°C (75°F) | 119 mm | 69% | fair |
| July | 29°C (84°F) | 24°C (75°F) | 76 mm | 59% | best |
| August | 31°C (87°F) | 25°C (76°F) | 50 mm | 60% | best |
| September | 33°C (91°F) | 25°C (78°F) | 68 mm | 72% | best |
| October | 33°C (91°F) | 26°C (78°F) | 103 mm | 80% | fair |
| November | 31°C (88°F) | 26°C (78°F) | 135 mm | 83% | fair |
| December | 30°C (85°F) | 25°C (76°F) | 213 mm | 83% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
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