8· 1 review
Acaiá Cave & Ilha Grande Lagoons Boat Tour
If you're in Ilha Grande, don't miss the opportunity to take a tour around the Acaiá Cave and its main lagoons. You'll fall in love with its landscapes!
7 h
from US$ 46
Short answer
In August, Ilha Grande averages highs of 27 °C (81 °F) and lows of 18 °C (64 °F), with about 43 mm of rain spread over roughly 6 days. August is a dry month, good for outdoor plans. Crowds tend to be low this month.
Climate · INMET (updated 2026)
Temperature
27 / 18 °C
high / low
Rain
43 mm
6 days
Daylight
11h19
sunset at 17:40
Crowds
Low
season
What to expect in Ilha Grande in August
Editor's tip
August is the heart of winter in Ilha Grande. In Brazil the seasons are the reverse of those in the Northern Hemisphere. Temperatures are pleasant, with highs of 27 °C (81 °F) and nights that still call for a light jacket. Crowds are light, which tends to work in favor of travelers: shorter lines, more peace and quiet, and cheaper lodging. It also rains very little: this is one of the driest months of the year, good for anyone who wants an outdoor itinerary.
Myllena Vieira · Editor at VisiteCrowds
Crowd level: low
A quiet period: short lines and room to move on the streets, ideal if you want to avoid the crowds.
Prices
Rates: low
Low season: usually the best time to find lodging and tickets at a better price.
Tours and tickets
Things to do in Ilha Grande in August
Where to stay
Hotels in Ilha Grande
August is low season in Ilha Grande: rates drop and there are more rooms to choose from. A good time to get a better hotel for the same budget.
Rates change with the dates: confirm the price on Booking.com.
What happens in August
August has no major fixed events: a quieter month for enjoying Ilha Grande at your own pace.
What to pack in August
Light jacket for the evening · nights of 18 °C (64 °F) Light clothing for the day · highs of 27 °C (81 °F) Sunscreen and sunglasses · strong sun on the tours Comfortable walking shoes · you will be on foot much of the day
Looking for better weather?
Where the weather is good in August
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