Búzios weather in September
September in Búzios: warm, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Búzios · #377 of 897 destinations to visit in September · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Búzios in September
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Búzios climate normals — September
| Daytime high | 25°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 20°C / 69°F | |
| Rainfall | 51 mm / 2 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 9.7 h/day | |
| Daylight | 12 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Búzios in September — FAQ
- Is September a good time to visit Búzios?
- September in Búzios: warm, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Búzios on SeasonMap's comfort score (85/100).
- What is the weather like in Búzios in September?
- In September, Búzios averages a daily high of 24.5°C and a low of 20.4°C, with about 51.3 mm of rain over roughly 6.8 rainy days.
- What is the air quality in Búzios in September?
- Búzios has a mean US Air Quality Index of about 45 in September.