Weather in Rio De Janeiro in May 2025
Average weather
Average temperature in Rio De Janeiro in May
The temperature in May is +26°C on average, with a range between a maximum of +31°C during the day and a minimum of +16°C at night.
The average maximum temperature goes down 47% by the end of the month, compared with the beginning of the month, from +29°C to +22°C.
Is Rio De Janeiro warm or cold in May?
Rio De Janeiro is typically warm in May.
Maximum temperatures go down compared to the previous month from +28°C to +26°C. The minimum temperature also goes down from +22°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Rio De Janeiro:
Water temperature in Rio De Janeiro in May
Water in Rio De Janeiro in May is Comfortable. It varies from +22°C to +26°C, with an average of +24°C. This is almost similar to the air temperature, which averages +26°C.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Rio De Janeiro in May?
Climate in Rio De Janeiro in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +28°C | +26°C | +25°C | ||||
| Min. temperature | ||||||
| +15°C | +13°C | +11°C | ||||
| Max. temperature | ||||||
| +37°C | +34°C | +34°C | ||||
| Rainfall | ||||||
| 105 mm | 67 mm | 45 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +26°C | +24°C | +23°C | ||||
| Humidity | ||||||
| 79% | 79% | 78% | ||||
| Air pressure | ||||||
| 1014 HPa | 1016 HPa | 1018 HPa | ||||
| Sunny days | ||||||
| 7 | 10 | 12 | ||||
| Cloudy days | ||||||
| 5 | 6 | 7 | ||||
| Rainy days | ||||||
| 16 | 14 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May often has better weather than April. It’s getting colder in May. From +28°C in the day, the average maximum temperature lowers to +26°C. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 105 mm to 67 mm. Humidity levels don’t change as the month goes on, averaging around 79%. The average wind speed doesn’t change much during May, staying around 2 m/s. The good news is there are likely to be more sunny days in May, from 7 to 10.
June brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Rio De Janeiro is gradually increasing during May, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Rio De Janeiro?
Climate Change over Years
The climate in Rio De Janeiro in May has not changed much over the last 43 years.
The average temperature was the lowest in 1989 (+26°C) and the highest in 2015 (+29°C). The driest year was 2001 with only 744 mm of rainfall, and the wettest year was 2019 with 2055 mm.
FAQ
Is May a good time to visit Rio De Janeiro?
Can you sunbathe in Rio De Janeiro in May?
Can you swim in Rio De Janeiro in May?
Is Rio De Janeiro rainy in May?
Is it sunny in Rio De Janeiro in May?
Other cities in Brazil
Monthly weather in Rio De Janeiro
Source of the data
For this page, we’ve looked at the typical weather in Rio De Janeiro, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.