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Brazil weather in December 2025
Expect daytime maximum temperatures of 28°C in Brazil in December based on long-term weather averages. There are 5 hours of sunshine per day on average with 21 days with some rainfall and typically 207 mm of rainfall in the month.
- 28°C max day temperature
28 - 5 hours of sunshine per day
- 21 days with some rainfall
21 - 20°C min night temperature
20 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 207 mm of monthly rainfall
207 - 11+ (Extreme) UV index
11 - 24°C sea temperature
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Recommended for Brazil
The December weather guide for Brazil (Rio de Janeiro) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Brazil destinations
Below are average maximum temperatures at popular countries, regions and places in Brazil in December. Select a holiday destination to see more weather parameters.
All Brazil destinations
- Angra Dos Reis
- Belem
- Belo Horizonte
- Boa Vista
- Brasilia
- Buzios
- Caceres
- Campinas
- Campo Grande
- Costa do Sauipe
- Cuiaba
- Curitiba
- Fernando de Noronha
- Florianopolis
- Fortaleza
- Foz do Iguacu
- Guaruja
- Ilheus
- Macapa
- Maceio
- Manaus
- Marau Peninsular
- Natal
- Paraty
- Pipa
- Ponta Negra
- Porto Alegre
- Porto Seguro
- Porto Velho
- Praia Do Forte
- Recife
- Rio de Janeiro
- Salvador
- Sao Luis
- Sao Paulo
- Tabatinga
- Via Costeira
Metric (°C / mm) | Imperial (°F / inches)
More about Brazil
How hot is it in Brazil in December?
Daytime temperatures usually reach 28°C in Rio de Janeiro, Brazil in December with moderate heat and humidity, falling to 20°C at night.
How sunny is it in Brazil in December?
There are normally 5 hours of bright sunshine each day in Rio de Janeiro, Brazil in December - that's 38% of daylight hours.
How warm is the sea around Brazil in December?
The average sea temperature around Rio de Janeiro, Brazil in December is 24°C.
Does it rain in Brazil in December?
There are usually 21 days with some rain in Rio de Janeiro, Brazil in December and the average monthly rainfall is 207mm.
Brazil December sunrise & sunset times
Browse the sunrise and sunset times for Brazil in December 2025. Select a month to view Brazil sunrise and sunset times for the next 12 months. The Brazil sunrise and sunset times shown below are for Rio de Janeiro.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st December 2025 | 04:59 | 18:25 |
| Tuesday, 16th December 2025 | 05:02 | 18:35 |
| Wednesday, 31st December 2025 | 05:10 | 18:42 |
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