August · Brazil
Best time to visit Rio de Janeiro in August Weather, crowds & prices
Weather in Rio de Janeiro in August
Average temperature 21°C, 66 mm of rain, about 27 days with 6+ hours of sunshine and 78% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
8.2/10
Ranked #10 of 12 months
- Avg temp
- 21°C
- Rainfall
- 66 mm
- Humidity
- 78%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
August in Rio de Janeiro scores 8.2/10 for beach and coastal travel - ranked #10 of 12. Expect around 21°C, 66 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Golden shores, verdant peaks, and carnival spirit shine from late summer through Rio's gentle May–September days.
August holds up well in Rio de Janeiro — 10th best month
With 21°C (70°F) on average, August delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
Budget for roughly 66 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 11.3 hours of daylight to work around it.
That is 8.2/10 on the same scale — 10th of 12 months, versus 9.2/10 for the best month here.
Pack light clothing, swimwear and real sun protection, a packable rain layer.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Rio de Janeiro in August?
- In August, Rio de Janeiro averages 21°C, 66 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 8.2/10.
- Is August a good time to visit Rio de Janeiro?
- August earns a 8.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Rio de Janeiro in August?
- Expect about 66 mm of rain in August. Average humidity is 78% and there are about 27 days with 6+ hours of sunshine.
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