Ilhabela Weather in December
What's the weather like in Ilhabela (São Paulo) in December 2025?
The climate in Ilhabela during December can be summarized as warm, humid and very wet.
December is in the summer in Ilhabela and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 19°C (66°F) is normal.
| Daytime temperature | 26.5°C 79.6°F |
|---|---|
| Nightly temperature | 19°C 66.1°F |
| Average temperature | 22.7°C 72.9°F |
| Daily sunshine | 4.1 hrs |
| Avg rainfall | 235 mm 9.3 ins |
| Rainy days | 19 days |
| Sea temperature | 24.7°C 76.5°F |
| Humidity | 81% |
| Windspeed | 10.4kph 7 mph |
On average December is the 4th wettest month of the year in Ilhabela with around 235mm 9.3 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.1 hours of sunshine per day.
December temperatures in Ilhabela
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Ilhabela in December 2025.
Other monthly averages
Best places to visit in December
Ilhabela weather stats
| Hottest month: | March | 27.7°C 81.9°F |
|---|---|---|
| Driest month: | July | 69mm 2.7ins |
| Sunniest month: | June | 4.9hrs |
| Coldest month: | July | 21.5°C 70.7°F |
| Wettest month: | January | 262mm 10.3ins |
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