Rio de Janeiro weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Good
Best time to visit: January – December
What is the weather like in Rio de Janeiro in October?
In October, Rio de Janeiro is hot: daytime highs average 28 °C, and nights cool down to about 20 °C. The sea averages 21.9 °C – refreshing for a swim. Expect around 6 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 83 mm in total. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Rio de Janeiro.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 75 | 73 | 70 |
| Day | 28° | 28° | 28° |
| Night | 18° | 20° | 21° |
| Sea | 21° | 22° | 23° |
| Sun | 7 h | 6 h | 6 h |
| Rain days | 9 | 12 | 15 |
More details for October
- Daylight
- 12 h 35 min05:21 – 17:56
- UV index
- 11 · extremeclear sky, noon (estimate)
- Muggy days
- 21 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 67 %on average
- Hot days
- 12 days30 °C or more
- Time zone
- UTC−3America/Sao_Paulo
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %70 %
- Sunshineweight 20 %57 %
- Few rainy daysweight 20 %46 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Rio de Janeiro in October: quick answers
Is Rio de Janeiro hot in October?
Yes. In October, Rio de Janeiro is hot: daytime highs average 28 °C and nights stay around 20 °C. On about 12 days the thermometer climbs to 30 °C or more.
Can you swim in Rio de Janeiro in October?
Yes. In October the sea averages 21.9 °C – refreshing for a swim.
Does it rain much in Rio de Janeiro in October?
Rain is frequent, with about 12 rainy days and 83 mm in total.
Rio de Janeiro month by month
The whole year in Rio de JaneiroAll destinations: Brazil
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)