Monthly climate guide
Rio de Janeiro weather in October
With highs near 27°C (80°F) and lows around 21°C (69°F), October feels warm in Rio de Janeiro. Rainfall averages about 99 mm (wet) and the sky is often cloudy. Daytime highs are about the same as September and about the same as November.
What stands out in October
- Humidity near 79% makes 27°C feel stickier than it sounds.
- There's little difference between day and night (around 6°C).
- Just 40 km apart, but Rio de Janeiro runs about 4°C cooler than Petrópolis this month.
- Check the hourly forecast before heading to Christ the Redeemer — showers are likely.
Avg high
27°C
80°F
Avg low
21°C
69°F
Rainfall
99 mm
wet
Humidity
79%
relative
Sky
69%
cloud · often cloudy
Rio de Janeiro weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 29°C / 84°F | 24°C / 75°F | 215 mm | 82% | 65% |
| February | 29°C / 84°F | 24°C / 75°F | 180 mm | 82% | 62% |
| March | 28°C / 82°F | 23°C / 74°F | 197 mm | 83% | 71% |
| April | 27°C / 80°F | 22°C / 72°F | 106 mm | 82% | 57% |
| May | 25°C / 77°F | 20°C / 68°F | 73 mm | 81% | 58% |
| June | 25°C / 76°F | 19°C / 67°F | 56 mm | 81% | 53% |
| July | 24°C / 76°F | 18°C / 65°F | 30 mm | 78% | 45% |
| August | 25°C / 77°F | 18°C / 65°F | 47 mm | 77% | 46% |
| September | 26°C / 79°F | 19°C / 67°F | 73 mm | 77% | 53% |
| October | 27°C / 80°F | 21°C / 69°F | 99 mm | 79% | 69% |
| November | 26°C / 79°F | 21°C / 70°F | 261 mm | 83% | 78% |
| December | 28°C / 82°F | 23°C / 73°F | 235 mm | 83% | 71% |
What to pack for October
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is October a good time to visit Rio de Janeiro?
Our Rio de Janeiro guide recommends: April to June or September to October, avoiding the peak heat and crowds of the December–February summer.
Stick to well-touristed areas and take standard city precautions with valuables — like any major city, it pays to be aware of your surroundings.
Best time to visit Rio de Janeiro →Other Brazil cities in October
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Rio de Janeiro weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/rio-de-janeiro/october
<a href="https://weathercompare.eu/weather/brazil/rio-de-janeiro/october">Rio de Janeiro weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/rio-de-janeiro" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Rio de Janeiro weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/rio-de-janeiro/october">Rio de Janeiro weather in October</a> – WeatherCompare</p>
Rio de Janeiro in October: quick answers
Is October a good time to visit Rio de Janeiro?
October is one of the wetter months in Rio de Janeiro, with about 99 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Rio de Janeiro in October?
Average highs are about 27°C (80°F) and average lows about 21°C (69°F), based on 10 years of daily data.
Does it rain a lot in Rio de Janeiro in October?
Rio de Janeiro typically gets around 99 mm of rain in October — wet.
When is the best time to visit Rio de Janeiro?
April to June or September to October, avoiding the peak heat and crowds of the December–February summer.
Figures are long-term averages for the area around Rio de Janeiro (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.