Best Time to Visit Maresias: Weather, Sea and Crowds Month by Month

Short answer: For the warmest water, go from December to March: the sea stays between 24 °C and 26 °C, but these are the rainiest months and, through February, high season. To spend less, go in Villa Blu's low season, from May to August, with 10% cashback on direct bookings in June, July and August. To balance weather, sea and crowds, choose shoulder season (March, April, September, October and November) outside the holidays.

What's the best time to visit Maresias, month by month?

The table brings together averages for São Sebastião, the municipality Maresias belongs to: air temperature, rainfall and sea temperature. The season column follows Villa Blu's calendar: high season from December to February, shoulder season in March, April, September, October and November, and low season from May to August.

Month	Air (avg.)	Rain	Sea	Season	Holidays and events
January	26.3 °C	223 mm	26 °C	High	New Year's Day (Jan 1); Jan 25, a holiday in the city of São Paulo
February	26.3 °C	211 mm	26 °C	High	Carnival (Feb 8 and 9 in 2027)
March	25.8 °C	216 mm	26 °C	Shoulder	Good Friday (Mar 26 in 2027)
April	23.9 °C	143 mm	25 °C	Shoulder	Tiradentes Day (Apr 21); Pan American Footvolley Championship in Maresias (2026)
May	21.9 °C	104 mm	24 °C	Low	Labor Day (May 1); Corpus Christi (May 27 in 2027)
June	20.6 °C	72 mm	22 °C	Low	No national holiday
July	19.7 °C	61 mm	21 °C	Low	School vacation; Jul 9, a São Paulo state holiday
August	20.8 °C	62 mm	21 °C	Low	No national holiday
September	21.7 °C	80 mm	21 °C	Shoulder	Independence Day (Sep 7); World Surf League event in Maresias (2026)
October	23.0 °C	134 mm	22 °C	Shoulder	Our Lady of Aparecida (Oct 12)
November	24.1 °C	143 mm	23 °C	Shoulder	All Souls' Day (Nov 2), Republic Proclamation Day (Nov 15), Black Consciousness Day (Nov 20)
December	25.2 °C	189 mm	24 °C	High	Christmas (Dec 25) and New Year's Eve (Dec 31)

From December to March, rainfall ranges from 189 mm to 223 mm a month; July and August stay close to 60 mm. In January, the average high reaches 29.5 °C; in July, the average low drops to 15.3 °C. The sea is slow to cool down: it stays at 26 °C from January to March and only drops to 21 °C from July to September.

Long holiday weekends fill up the city even outside summer. Over Tiradentes Day 2026, in April, the São Sebastião Tourism Observatory reported 84.25% occupancy. The 2026/2027 dates, with the day of the week, are in our guide to New Year's Eve and holidays in Maresias.

What's the best time to visit Maresias as a couple?

For couples, the best window is shoulder season outside the holidays. In April, September and October, it rains less than in summer, the sea is between 21 °C and 25 °C, and you pay shoulder-season rates. If peace and quiet is the plan, go on weekdays.

At Villa Blu, the Deluxe Suite is the largest suite, with 22 m², a king bed, a sofa and a desk. From the inn's lookout, you can watch the sun set behind the mountains, and the sauna is open from 10 am to 10 pm. See more on our inn for couples page.

When should you go to Maresias with kids?

If you're tied to the school calendar, you have two windows: summer and July. In São Paulo state public schools, 2026 classes end on Dec 18, and 2027 classes don't start until Feb 11, after Carnival. In 2027, the first semester ends on Jul 6 and the second starts on Jul 26. Private schools and municipal school systems have their own calendars.

Summer is high season, with the sea between 24 °C and 26 °C. July is low season and the coldest month, averaging 19.7 °C in the air and 21 °C in the sea. At that time of year, the heated pool, with the water between 27 °C and 29 °C, makes a difference for little ones.

An honest heads-up: Villa Blu is small and quiet, with no playground or kids' activities. Children up to 3 stay free (up to 2 per room), and the Apartment has a full kitchen, a separate bedroom and a balcony with a hammock, for up to 4 people. More tips in Maresias with kids and on our inn for families page.

When is it cheapest to visit Maresias?

At Villa Blu, low season runs from May to August. In June, July and August, guests who book direct and are registered with Clube Villa Blu get 10% of the amount back as credit for their next trip, versus 3% on regular dates.

The direct rate is already 10% lower than on the apps, with up to 6 interest-free installments. For two travelers, the Economy Suite, with 12 m² and a double bed, starts at R$ 223.

What you trade for the lower price: from May to August, the sea is between 21 °C and 24 °C, and average lows are between 15 °C and 18 °C.

What's the best time to surf in Maresias?

According to Surf-Forecast, the season with the most clean waves in Maresias is fall in the Southern Hemisphere, especially May. The best conditions come with a south swell and an offshore wind from the north. The same site warns that the break often gets crowded.

Maresias has also made it onto the world circuit. From Sep 26 to Oct 3, 2026, the beach hosted a World Surf League (WSL) Challenger Series event, the qualifying series for surfing's elite tour, and the first stop of that series in the state of São Paulo. Breaks and tips for every level are in our guide to surfing in Maresias.

What can you do in Maresias on a rainy day?

From December to March, the rainiest months, it helps to have a plan B. At Villa Blu, it's right inside the inn: the pool is heated all year round, with the water between 27 °C and 29 °C, and the sauna is open from 10 am to 10 pm. Breakfast, included in every rate, is served from 8 to 10:30 am.

How to make the most of the pool outside summer is covered in our post on the heated pool in Maresias in winter. For dry days, see things to do in Maresias beyond the beach.