Rio de Janeiro weather in October
October in Rio de Janeiro: hot, rainy, with very humid — a great time to visit.
#9 of 12 months in Rio de Janeiro · #282 of 604 destinations to visit in October · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Rio de Janeiro climate normals — October
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 146 mm / 5.7 in | 🌧 rainy |
| Rainy days | 18 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 20°C / 69°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 12.6 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 66 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Rio de Janeiro in October — FAQ
- Is October a good time to visit Rio de Janeiro?
- October in Rio de Janeiro: hot, rainy, with very humid — a great time to visit. It ranks #9 of 12 months for Rio de Janeiro on SeasonMap's comfort score (78/100).
- What is the weather like in Rio de Janeiro in October?
- In October, Rio de Janeiro averages a daily high of 28.2°C and a low of 20.8°C, with about 145.9 mm of rain over roughly 18 rainy days.
- What is the air quality in Rio de Janeiro in October?
- Rio de Janeiro has a mean US Air Quality Index of about 66 in October.