Rio de Janeiro weather in October
Rio de Janeiro averages 27°C by day and 21°C at night in October, with the sea at 22°C and about 89 mm of rain in the month.
Day
27°C
Night
21°C
Sea
22°C
Rain
89 mm
Flight from London
11½h
What October feels like
October is hot in Rio de Janeiro: proper beach weather.
The sea is 22°C: fine for swimming without a wetsuit.
Expect some rainy spells: about 89 mm falls in the month.
That is 11°C warmer than an average October day in London.
Of the 56 sun destinations we track, Rio de Janeiro is the #39 warmest in October.
Want it warmer in October?
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
October is highlighted. Compare with September and November, 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 October: quick answers
Is Rio de Janeiro hot in October?
October is hot in Rio de Janeiro: proper beach weather. Average highs are 27°C and lows 21°C.
Can you swim in Rio de Janeiro in October?
The sea is 22°C: fine for swimming without a wetsuit.
Does it rain in Rio de Janeiro in October?
Expect some rainy spells: about 89 mm 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 October for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in October 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 October?
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