Historical climate averages in Rio de Janeiro for August
Brazil · 2021–2025 · 145 daily observations
A month-level reference built from observed daily highs, lows, and precipitation values. Use it to see how August fits into Rio de Janeiro's annual pattern, then jump to nearby months below.
Average High
25.2°C
Average Low
18.2°C
Record High
37.1°C
Record Low
14.3°C
Average Daily Precipitation
2.1mm
Data Coverage
2021–2025 (145 obs)
August in context
August in Rio de Janeiro is the coolest month by average daytime high. Average highs reach 25.2°C and average lows settle near 18.2°C.
the 5th wettest month by average daily precipitation. Average daily precipitation is 2.1mm, versus 7.3mm in February, the wettest month.
This snapshot is built from 145 daily observations collected between 2021 and 2025. Record highs and lows mark the single hottest and coldest daily readings in the archive for this month.
Relative to the full year
- Daytime highs: -2.9°C vs city-wide monthly average
- Nighttime lows: -3.4°C vs city-wide monthly average
- Daily precipitation: -1.1mm vs city-wide monthly average
Archive quality
- Coverage: 2021–2025 (145 obs)
- Temperature span: 22.8°C between record low and high
- Driest month benchmark: September at 2.1mm
How this summary is calculated
PastWeather groups all recorded days for August, then calculates the average daytime high, average nighttime low, and average daily precipitation value for that month. The cards above stay tied to observed data rather than travel copy or generic climate descriptions.
Average high / low
Mean daily maximum and minimum temperatures across every recorded August day in the archive.
Record extremes
The single hottest and coldest daily readings observed during this month, useful for understanding outlier risk.
Precipitation note
Precipitation is shown as an average daily value for this month, which helps compare wetter and drier parts of the year on the same basis.
Explore another month
Move month by month or jump straight to the warmest, coldest, or wettest part of the year for Rio de Janeiro.