8· 1 review
São Sebastião Whale Watching
São Sebastião offers one of the best spots in Brazil to see humpback whales, making this crossing a must for anyone visiting the region.
4 h
from US$ 102
Short answer
In March, São Sebastião averages highs of 30 °C (86 °F) and lows of 21 °C (70 °F), with about 311 mm of rain spread over roughly 16 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
30 / 21 °C
high / low
Rain
311 mm
16 days
Daylight
12h14
sunset at 18:17
Crowds
Low
season
What to expect in São Sebastião in March
Editor's tip
March brings fall to São Sebastião. In Brazil the seasons are the reverse of those in the Northern Hemisphere. Highs reach 30 °C (86 °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. If the dates line up, it is worth fitting Carnival and Carnamar into your itinerary: it is what livens up the destination at that time of year.
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 · ~R$ 412
Low season: usually the best time to find lodging and tickets at a better price. The average nightly rate for lodging in São Sebastião is around R$ 412 (Brazilian reais), depending on the date.
Tours and tickets
Things to do in São Sebastião in March
Where to stay
Hotels in São Sebastião
March is low season in São Sebastião: 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
Carnival and Carnamar
Besides the blocos (street parties) in the Historic Center, Carnamar takes the celebration out to sea, on decorated boats.
What to pack in March
Light clothing and a cap · highs of 30 °C (86 °F) Rain jacket or umbrella · 16 days of rain in the month Sunscreen and sunglasses · strong sun on the tours Quick-dry clothing · humidity of 85% Comfortable walking shoes · you will be on foot much of the day
Looking for better weather?
Where the weather is good in March
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