Verdict: Excellent month
Rio de Janeiro Weather in May
May hits the sweet spot in Rio de Janeiro — highs around 26°C (79°F), ideal for a full day on foot. Rain is occasional — about 8 wet days in a typical year. Overall, May is one of the best months of the year to be in Rio de Janeiro.
Average high
26°C / 79°F
Average low
20°C / 68°F
Rain days
~8
Precipitation
56 mm
What to pack for Rio de Janeiro in May
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
May against the rest of the year
Warmest in Rio de Janeiro: Jan (29°C / 84°F) · Coolest: Jun (25°C / 77°F) · Wettest: Dec (~17 rain days)
29°
23°
Jan
29°
24°
Feb
29°
23°
Mar
27°
21°
Apr
26°
20°
May
25°
19°
Jun
25°
18°
Jul
25°
18°
Aug
27°
20°
Sep
26°
21°
Oct
27°
21°
Nov
28°
22°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)