Rio de Janeiro weather in January
Rio de Janeiro averages 30°C by day and 24°C at night in January, with the sea at 26°C and about 154 mm of rain in the month.
Day
30°C
Night
24°C
Sea
26°C
Rain
154 mm
Flight from London
11½h
What January feels like
January is hot but wet in Rio de Janeiro: rainy season, so pack for showers.
The sea is warm at 26°C: comfortable for long swims.
It is rainy season: about 154 mm of rain falls in the month.
That is 23°C warmer than an average January day in London.
Of the 56 sun destinations we track, Rio de Janeiro is the #8 warmest in January.
Want it warmer in January?
These are hotter than Rio de Janeiro this month for at most an hour and a half more flying:
Rio de Janeiro weather by month
January is highlighted. Compare with December and February, or see the full year in Rio de Janeiro.
| Month | Day | Night | Sea | Rain |
|---|---|---|---|---|
| January | 30°C | 24°C | 26°C | 154 mm |
| February | 30°C | 24°C | 28°C | 126 mm |
| March | 29°C | 24°C | 26°C | 133 mm |
| April | 27°C | 22°C | 25°C | 86 mm |
| May | 26°C | 20°C | 24°C | 59 mm |
| June | 25°C | 19°C | 23°C | 38 mm |
| July | 25°C | 18°C | 22°C | 40 mm |
| August | 25°C | 18°C | 22°C | 63 mm |
| September | 26°C | 20°C | 23°C | 59 mm |
| October | 27°C | 21°C | 22°C | 89 mm |
| November | 27°C | 21°C | 23°C | 130 mm |
| December | 29°C | 23°C | 25°C | 132 mm |
Rio de Janeiro in January: quick answers
Is Rio de Janeiro hot in January?
January is hot but wet in Rio de Janeiro: rainy season, so pack for showers. Average highs are 30°C and lows 24°C.
Can you swim in Rio de Janeiro in January?
The sea is warm at 26°C: comfortable for long swims.
Does it rain in Rio de Janeiro in January?
It is rainy season: about 154 mm of rain falls in the month.
What is the warmest month in Rio de Janeiro?
February, at an average high of 30°C. The coolest is July at 25°C.
How long is the flight to Rio de Janeiro from the UK?
About 11½h direct from London, estimated from the 9,260 km distance. Check your airline for exact times.
Still choosing? See where is hot in January for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in January from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
Planning Rio de Janeiro in January?
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