Historical climate averages in Rio de Janeiro for January
Brazil · 2018–2026 · 103 daily observations
A month-level reference built from observed daily highs, lows, and precipitation values. Use it to see how January fits into Rio de Janeiro's annual pattern, then jump to nearby months below.
Average High
31.0°C
Average Low
24.1°C
Record High
38.2°C
Record Low
20.6°C
Average Daily Precipitation
2.9mm
Data Coverage
2018–2026 (103 obs)
January in context
January in Rio de Janeiro is the 2nd warmest month by average daytime high. Average highs reach 31.0°C and average lows settle near 24.1°C.
the 3rd wettest month by average daily precipitation. Average daily precipitation is 2.9mm, versus 4.1mm in April, the wettest month.
This snapshot is built from 103 daily observations collected between 2018 and 2026. 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: +3.7°C vs city-wide monthly average
- Nighttime lows: +3.3°C vs city-wide monthly average
- Daily precipitation: +0.5mm vs city-wide monthly average
Archive quality
- Coverage: 2018–2026 (103 obs)
- Temperature span: 17.6°C between record low and high
- Driest month benchmark: June at 0.6mm
How this summary is calculated
PastWeather groups all recorded days for January, 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 January 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.