Verdict: Excellent month
Rio de Janeiro Weather in August
August hits the sweet spot in Rio de Janeiro — highs around 25°C (77°F), ideal for a full day on foot. Expect showers on roughly 9 days of the month — rarely trip-ruining, worth planning around. Overall, August is one of the best months of the year to be in Rio de Janeiro.
Average high
25°C / 77°F
Average low
18°C / 64°F
Rain days
~9
Precipitation
74 mm
What to pack for Rio de Janeiro in August
- 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
August 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)