Brazil
Rio de Janeiro in December: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Rio de Janeiro in December is climatically well suited to beach holidays and family holidays. The average daily high is around 28 °C, and the sea is about 24 °C. With about 22 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
65/100 · #10
Warmth
#4
Dryness
#11
Sun
#3
Sea warmth
#5
Published best categories: none
Rio de Janeiro · DecemberPhoto: Jens Hausherr from Hamburg, Deutschland · CC BY-SA 2.0Climate facts
- Average high
- 28 °C
- Average low
- 23 °C
- Sea
- 24 °C
- Rainy days (est.)
- 22 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 83 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| November | 26 | 21 | 20 | 194 | 6.4 | 82 | 2.8 | 23 | 66 |
| December (selected) | 28 | 23 | 22 | 220 | 7.0 | 83 | 2.5 | 24 | 65 |
| January | 28 | 23 | 22 | 217 | 7.2 | 84 | 2.4 | 25 | 63 |
How do the previous and next months compare?
Baseline: December (65/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| November | +1 | -1.2 °C | -1.4 °C | -2 | -26.9 mm | -0.6 h | -1.4 % | +0.3 m/s | -1.5 °C |
| January | -2 | +0.7 °C | +1 °C | +0.1 | -3.4 mm | +0.2 h | +0.4 % | -0.1 m/s | +1.1 °C |
All twelve months in context
Find a place to stay
Where to stay in Rio de Janeiro
Compare available stays, prices and cancellation terms for Rio de Janeiro on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Rio de Janeiro in December?
The average daily high is around 28 °C, with an average daily low of about 23 °C.
Can you swim in Rio de Janeiro in December?
The sea is about 24 °C (swimmable).
Does it rain a lot in Rio de Janeiro in December?
The curated estimate is about 22 rainy days per month, not a directly measured long-term average. Total precipitation averages around 220 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Rio de Janeiro?
By the climate score, May, June, July and August are the strongest months for Rio de Janeiro. For a beach trip: February, April, May and June. December is not among them.