Avg high
25°C
Avg low
18°C
Rainfall
75 mm
Rain days
9.5
Sunshine
9.1 h/day
Daylight
11.2 h
What to pack for Rio de Janeiro in August
- t-shirts and light layers
- a light jacket for evenings
- a compact umbrella or rain shell — rain is frequent
Humidity averages 78%; max daily wind around 18 km/h.
How August compares
Best months in Rio de Janeiro: May–September. See the full best time to visit Rio de Janeiro guide.
Rio de Janeiro in August: the details
In August, Rio de Janeiro sees average daytime highs of 25°C (77°F) and overnight lows of 18°C (65°F). Rainfall totals roughly 75 mm across 9.5 rainy days, and the sun shines about 9.1 hours per day with 11.2 hours of daylight mid-month. Relative humidity averages 78%.
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Rio de Janeiro, Brazil (-22.91, -43.18) — see our methodology. Actual conditions vary year to year.
Where should you go next month?
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