Rio de Janeiro Weather in May
Brazil · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Rio de Janeiro sees average temperatures ranging from a low of 19.8°C (67.6°F) to a high of 25.8°C (78.4°F), with a mean of 22.5°C (72.5°F). Compared to the annual average of 23.6°C (74.5°F), this month is 1.1°C cooler than the yearly norm. Precipitation averages 55.8mm, making it approximately 41.0mm drier than the monthly average of 96.0mm. The city receives an average of 9.5 hours of sunshine per day during May, with relative humidity averaging 79.9%. Wind speeds reach an average maximum of 15.8 km/h. For travelers, this month offers a temperature experience in Rio de Janeiro, with drier-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.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 23.9°C (75.0°F) | 22.5°C (72.5°F) | 21.7°C (71.1°F) |
| Rainfall | 90.0mm | 55.8mm | 37.7mm |
| Sunshine | 10.1 hrs | 9.5 hrs | 9.2 hrs |
| Humidity | 81.4% | 79.9% | 78.9% |
| Wind | 16.7 km/h | 15.8 km/h | 15.0 km/h |
| Rainy Days | 17.4 | 12.6 | 12.4 |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Rio de Janeiro in May, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Rio de Janeiro in May?
The average temperature in Rio de Janeiro during May ranges from 19.8°C (67.6°F) to 25.8°C (78.4°F), with a mean of 22.5°C (72.5°F).
How much does it rain in Rio de Janeiro in May?
Rio de Janeiro receives an average of 55.8mm of precipitation in May, spread across approximately 12.6 rainy days.
What should I pack for Rio de Janeiro in May?
Based on May weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is May a good time to visit Rio de Janeiro?
May is a good time to visit Rio de Janeiro, with comfortable temperatures and manageable rainfall.
Other Months for Rio de Janeiro
Cities with Similar May 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.