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 March, Ilha Grande averages highs of 31 °C (88 °F) and lows of 23 °C (73 °F), with about 150 mm of rain spread over roughly 15 days. March is one of the rainiest months of the year, so bring a rain jacket and keep some indoor activities in mind. Crowds tend to be low this month.
Climate · INMET (updated 2026)
Temperature
31 / 23 °C
high / low
Rain
150 mm
15 days
Daylight
12h14
sunset at 18:12
Crowds
Low
season
What to expect in Ilha Grande in March
Editor's tip
March brings fall to Ilha Grande. In Brazil the seasons are the reverse of those in the Northern Hemisphere. Highs reach 31 °C (88 °F): the heat calls for early starts, sunscreen, and spending the middle of the day in the shade or in the water. Crowds are light, which tends to work in favor of travelers: shorter lines, more peace and quiet, and cheaper lodging. It rains fairly often, so keep an indoor plan handy for gray days.
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 March
Where to stay
Hotels in Ilha Grande
March 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 March
March has no major fixed events: a quieter month for enjoying Ilha Grande at your own pace.
What to pack in March
Light clothing and a cap · highs of 31 °C (88 °F) Rain jacket or umbrella · 15 days of rain in the month Sunscreen and sunglasses · strong sun on the tours Quick-dry clothing · humidity of 82% Comfortable walking shoes · you will be on foot much of the day
Looking for better weather?
Where the weather is good in March
These destinations have the best weather comfort for March, scored with the same calculation of rain, heat and humidity. Tap to see what the month is like in each one.
Torn between Ilha Grande and another destination?
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