Rio das Ostras Weather in December

In Rio das Ostras, December brings high daytime temperatures around 30°C (86°F), with nights cooling to 23°C (73°F). It is the wettest month of the year, so expect more rainfall than usual.

Rainfall in Rio das Ostras in December

Rio das Ostras is in the rainy season in December, with rain on around 21 days and an average of 205 mm (8.1 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.

Temperature in Rio das Ostras in December

December in Rio das Ostras brings high temperatures, with highs of 30°C (86°F) and nights around 23°C (73°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

December in Rio das Ostras has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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For a detailed overview over the year and the best time to visit Brazil, check out our Rio das Ostras's climate page.

Rio das Ostras Temperature in December

Min Temperature 23°C (73°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 71%  

Precipitation 205 mm (8.1 in)  

Rainy days 21 days  

Humidity 82% *  

* Data from: Cabo Frio, Brazil (40 KM, 25 Miles).

What to Wear in Rio das Ostras in December

Warm but pleasant conditions in Rio das Ostras in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions.

What To Do in Rio das Ostras in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our Rio das Ostras's climate page.

More climate data for Rio das Ostras

Temperature Rainfall Humidity

See the full Rio das Ostras climate overview or explore weather in Brazil.