Rio de Janeiro weather in January
January in Rio de Janeiro: sweltering, soaked, with very humid — a great time to visit.
#10 of 12 months in Rio de Janeiro · #213 of 604 destinations to visit in January · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Rio de Janeiro climate normals — January
| Daytime high | 31°C / 89°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 24°C / 75°F | |
| Feels like (high) | 37°C / 99°F | |
| Rainfall | 233 mm / 9.2 in | ⛈ soaked |
| Rainy days | 18 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 9.9 h/day | |
| Daylight | 13.4 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 82 | 🙂 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 January — FAQ
- Is January a good time to visit Rio de Janeiro?
- January in Rio de Janeiro: sweltering, soaked, with very humid — a great time to visit. It ranks #10 of 12 months for Rio de Janeiro on SeasonMap's comfort score (77/100).
- What is the weather like in Rio de Janeiro in January?
- In January, Rio de Janeiro averages a daily high of 31.4°C and a low of 23.7°C, with about 232.9 mm of rain over roughly 18.2 rainy days.
- What is the air quality in Rio de Janeiro in January?
- Rio de Janeiro has a mean US Air Quality Index of about 82 in January.