Rio de Janeiro Weather in January
Brazil · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Rio de Janeiro sees average temperatures ranging from a low of 23.5°C (74.3°F) to a high of 29.4°C (84.9°F), with a mean of 26.2°C (79.2°F). Compared to the annual average of 23.6°C (74.5°F), this month is 2.6°C warmer than the yearly norm. This is the hottest month of the year, reaching 29.4°C (84.9°F) on average. Precipitation averages 156.1mm, making it approximately 60.0mm wetter than the monthly average of 96.0mm. The city receives an average of 10.2 hours of sunshine per day during January, with relative humidity averaging 82.3%. Wind speeds reach an average maximum of 16.1 km/h. For travelers, this month offers a hottest month of the year experience in Rio de Janeiro, with wetter-than-average conditions compared to the rest of the year.
Rio doesn't have seasons the way Northern Hemisphere cities do — it has rhythms. I spent Carnival there once and the energy is indescribable, but the heat and crowds aren't for everyone. The data shows March-May as the sweet spot: still warm, less humid, fewer tourists. What the numbers can't capture is the late afternoon light on Ipanema — that's when Rio feels most itself. December-February is festive but exhausting; pace yourself.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 25.1°C (77.2°F) | 26.2°C (79.2°F) | 26.1°C (79.0°F) |
| Rainfall | 161.7mm | 156.1mm | 139.2mm |
| Sunshine | 10.3 hrs | 10.2 hrs | 9.9 hrs |
| Humidity | 83.4% | 82.3% | 83.7% |
| Wind | 16.7 km/h | 16.1 km/h | 15.4 km/h |
| Rainy Days | 22.4 | 20.4 | 19.8 |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Rio de Janeiro in January, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Rio de Janeiro in January?
The average temperature in Rio de Janeiro during January ranges from 23.5°C (74.3°F) to 29.4°C (84.9°F), with a mean of 26.2°C (79.2°F).
How much does it rain in Rio de Janeiro in January?
Rio de Janeiro receives an average of 156.1mm of precipitation in January, spread across approximately 20.4 rainy days.
What should I pack for Rio de Janeiro in January?
Based on January weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 156.1mm of precipitation.
Is January a good time to visit Rio de Janeiro?
January is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Rio de Janeiro
Cities with Similar January Climate (Tropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -22.91°, -43.17°. Timezone: America/Sao_Paulo. Last updated: 2026-07-30.