Manaus weather in August
August in Manaus: sweltering, a little rain — one of the best months to visit.
#2 of 12 months in Manaus · #421 of 604 destinations to visit in August · comfort 70/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Manaus climate normals — August
| Daytime high | 32°C / 90°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 76°F | |
| Feels like (high) | 38°C / 100°F | |
| Rainfall | 46 mm / 1.8 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 10.7 h/day | |
| Daylight | 12 h | |
| Wind | 10 km/h / 6 mph | |
| Air quality (US AQI) | 60 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Manaus in August — FAQ
- Is August a good time to visit Manaus?
- August in Manaus: sweltering, a little rain — one of the best months to visit. It ranks #2 of 12 months for Manaus on SeasonMap's comfort score (70/100).
- What is the weather like in Manaus in August?
- In August, Manaus averages a daily high of 32.3°C and a low of 24.5°C, with about 46.1 mm of rain over roughly 9.8 rainy days.
- What is the air quality in Manaus in August?
- Manaus has a mean US Air Quality Index of about 60 in August.