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Ilha Grande Weather in August
In Ilha Grande, August brings high daytime temperatures around 24°C (75°F), with nights cooling to 19°C (66°F). It is the driest month of the year, with minimal rainfall.
Rainfall in Ilha Grande in August
August is the month with the least rainfall. Whether you're keen on hiking, outdoor festivals, or just enjoying a walk, this month provides a reliably dry backdrop for all your plans. Climate statistics over the past 30 years suggest around 9 days of rain, with 60 mm (2.4 in) average for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Ilha Grande in August
The excellent temperature in Ilha Grande in August makes it a solid month to visit, with 24°C (75°F) during the day and 19°C (66°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights cool down to 19°C (66°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Ilha Grande Temperature in August
Min Temperature
19°C (66°F)
Max Temperature
24°C (75°F)
Chance of Rain
30%
Precipitation
60 mm (2.4 in)
Rainy days
9 days
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.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ilha Grande typically stay consistent throughout August, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows around 17°C (63°F).
Average temperatures in August
Historical weather records for Ilha Grande in August
Browse day-by-day weather records for Ilha Grande spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ilha Grande historical weather extremes in August
Based on weather observations in Ilha Grande between 1999 and 2026, these are the recorded extremes during August.
- Ilha Grande recorded its highest August temperature of 38°C (100°F) on August 24, 2023.
- The coldest August day was on August 10, 2003, with a maximum of 14°C (57°F).
- Nighttime temperatures dropped to 9°C (48°F) on August 11, 2004, marking the coldest August night on record.
Best Places in Brazil in August
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Ilha Grande in August
For Ilha Grande in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket.
What To Do in Ilha Grande in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Camping8/10 -
Outdoor sports10/10
Ilha Grande 3-Day Forecast
More climate data for Ilha Grande
See the full Ilha Grande climate overview or explore weather in Brazil.
Popular in August
Where to go in August - average daytime high across popular destinations.
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