Ilha Grande Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Ilha Grande.
Climate overview of Ilha Grande
Ilha Grande, Rio de Janeiro State, Brazil, enjoys a steady climate throughout the year, with daytime temperatures typically around 26°C (79°F). February is the warmest month at 29°C (84°F), while July is the coolest at 24°C (75°F).
With around 1591 mm (63 in) of annual rainfall, Ilha Grande has a notably wet climate. However, this rainfall is not evenly distributed — the city has a distinct rainy season from December to March. The wettest month is January.
Ilha Grande Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ilha Grande - and find the best time to visit.
Monthly Temperature in Ilha Grande
The temperature in Ilha Grande remains steady throughout the year, providing a consistently comfortable climate. Average daytime temperatures reach a comfortable 29°C (84°F) in February. In July, the coolest month of the year, temperatures drop to a comfortable 24°C (75°F).
At night, temperatures range from around 24°C (75°F) in February to 19°C (66°F) in July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Ilha Grande
Ilha Grande has a relatively rainy climate with high precipitation levels, averaging 1591 mm (63 in) of rainfall annually. Ilha Grande can be quite wet during January, receiving approximately 226 mm (8.9 in) of precipitation over 20 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 60 mm (2.4 in) of precipitation spread across 9 rainy days. For more details, please visit our Ilha Grande Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Ilha Grande
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July and August
- Warmest weather: January, February and March
- Fewest rainy days: June, July, August and September
- Seasonal pattern: A distinct rainy season from December to March
Frequently asked questions about the climate in Ilha Grande
What is the best time to visit Ilha Grande?
May, June, July and August typically offer the most optimal weather in Ilha Grande. In contrast, January tends to have less optimal conditions. Ilha Grande has a distinct rainy season from December to March.
What temperatures can I expect in Ilha Grande?
Daytime highs range from 24°C (75°F) in July to 29°C (84°F) in February. Nighttime lows range from 19°C (66°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
How much rain does Ilha Grande get?
Annual rainfall is around 1591 mm (63 in). January is the wettest month with 226 mm (8.9 in), while August is the driest with 60 mm (2.4 in).
Ilha Grande 3-Day Forecast
Ilha Grande 3-Day Forecast
Ilha Grande on the map
Ilha Grande is highlighted - select any city to see its climate.
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