Rio de Janeiro Weather in May
May in Rio de Janeiro brings high temperatures, with daytime highs of 27°C (81°F) and nights around 20°C (68°F). Quite a bit of rainfall is expected, around 80 mm (3.1 in), so pack an umbrella.
Rainfall in Rio de Janeiro in May
Records from the past 30 years suggest around 12 days of rain, with 80 mm (3.1 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Rio de Janeiro in May
The perfect temperature in Rio de Janeiro in May makes it a solid month to visit, with 27°C (81°F) during the day and 20°C (68°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 20°C (68°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Rio de Janeiro in May
The area experiences a moderate amount of sunshine, with approximately 188 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Rio de Janeiro in May
Wind speeds average 2 m/s (4 knots) during May. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.
Average water temperature in May
At 24°C (75°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you favor pleasant temperatures and minimal rainfall, May is one of the best months to visit Rio de Janeiro.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Brazil, check out our Rio de Janeiro's climate page.
Rio de Janeiro Temperature in May
Min Temperature
20°C (68°F)
Max Temperature
27°C (81°F)
Water Temperature
24°C (75°F)
Chance of Rain
40%
Precipitation
80 mm (3.1 in)
Rainy days
12 days
Humidity
80%
Windspeed
2 m/s (4 knots)
Sunshine
188 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Rio de Janeiro typically stay consistent throughout May, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 20°C (68°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Rio de Janeiro in May
Browse day-by-day weather records for Rio de Janeiro spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rio de Janeiro historical weather extremes in May
Our historical data for Rio de Janeiro spans 1976 to 2025, revealing these weather extremes.
- Rio de Janeiro recorded its highest May temperature of 38°C (100°F) on May 8, 1987.
- The coldest May day was on May 9, 1998, with a maximum of 15°C (59°F).
- The coldest night in May in Rio de Janeiro was on May 27, 1987, with a minimum of 10°C (50°F).
Best Places in Brazil in May
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in May →
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What to Wear in Rio de Janeiro in May
Warm but pleasant conditions in Rio de Janeiro in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 24°C (75°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Rio de Janeiro in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Brazil, check out our Rio de Janeiro's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Rio de Janeiro climate overview or explore weather in Brazil.
