Monthly climate guide
Rio de Janeiro weather in December
December in Rio de Janeiro is typically hot, with average daytime highs around 28°C (82°F) and night-time lows near 23°C (73°F). The month usually brings about 235 mm of rain (very wet) and is often cloudy. Daytime highs are 2°C warmer than November and about the same as January.
What stands out in December
- December falls in Rio de Janeiro's wetter season, when heavy showers are common.
- December is Rio de Janeiro's third warmest month.
- It's humid — around 83% — so the heat feels heavier.
- Days and nights are close, only about 5°C apart.
Avg high
28°C
82°F
Avg low
23°C
73°F
Rainfall
235 mm
very wet
Humidity
83%
relative
Sky
71%
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 December
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is December 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 December
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Rio de Janeiro weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/rio-de-janeiro/december
<a href="https://weathercompare.eu/weather/brazil/rio-de-janeiro/december">Rio de Janeiro weather in December</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 December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/rio-de-janeiro/december">Rio de Janeiro weather in December</a> – WeatherCompare</p>
Rio de Janeiro in December: quick answers
Is December a good time to visit Rio de Janeiro?
December is one of the wetter months in Rio de Janeiro, with about 235 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Rio de Janeiro in December?
Average highs are about 28°C (82°F) and average lows about 23°C (73°F), based on 10 years of daily data.
Does it rain a lot in Rio de Janeiro in December?
Rio de Janeiro typically gets around 235 mm of rain in December — very 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.