Morro Dois Irmãos by Baía do Sancho, Fernando de Noronha, Brazil – twin rock islets, turquoise bay and Morro do Pico
Brazil · Fernando de Noronha

Baía do Sancho Sea Temperature Today

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⁦23–28°C⁩

The sea temperature at Fernando de Noronha (Baía do Sancho) today is 27.1 °C / 81 °F – refreshing to pleasantly warm water, ideal for most people. The usual October average is 27.1 °C / 81 °F. Over the last 30 days the sea temperature has held at around 27.1 °C. Swimmable all year – the sea averages 26 °C or more in every month. Source: Sea Temp Map (seatempmap.com) – NASA MUR satellite data and the Copernicus Marine sea forecast.

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Climate · monthly averages

Sea temperature by month

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.

Warmest in April (29.1°C). Coldest in September (26.8°C). Swimmable all year – the sea averages 26 °C or more in every month.

Morro Dois Irmãos by Baía do Sancho, Fernando de Noronha, Brazil

The sea temperature at Fernando de Noronha (Baía do Sancho) today is 27.1 °C (81 °F) – refreshing to pleasantly warm water, ideal for most people. The usual October average is 27.1 °C. Over the last 30 days the sea temperature has held at around 27.1 °C. Swimmable all year – the sea averages 26 °C or more in every month. Source: Sea Temp Map (seatempmap.com) – NASA MUR satellite data and the Copernicus Marine sea forecast.


Sea temperature by month – Baía do Sancho
MonthMinAvgMax
January27.5°C / 81.5°F27.9°C / 82.2°F28.5°C / 83.3°F
February27.8°C / 82.1°F28.3°C / 82.9°F28.9°C / 84.0°F
March28.2°C / 82.8°F28.8°C / 83.8°F29.6°C / 85.2°F
April28.5°C / 83.3°F29.1°C / 84.5°F29.9°C / 85.8°F
May28.6°C / 83.5°F28.9°C / 84.0°F29.3°C / 84.7°F
June27.9°C / 82.2°F28.2°C / 82.7°F28.5°C / 83.2°F
July27.3°C / 81.1°F27.5°C / 81.5°F27.6°C / 81.8°F
August26.8°C / 80.3°F27.0°C / 80.5°F27.2°C / 80.9°F
September26.7°C / 80.0°F26.8°C / 80.3°F27.1°C / 80.8°F
October26.9°C / 80.3°F27.1°C / 80.8°F27.4°C / 81.2°F
November27.1°C / 80.8°F27.4°C / 81.2°F27.7°C / 81.9°F
December27.2°C / 81.0°F27.6°C / 81.6°F27.9°C / 82.2°F

Air temperature by month – Baía do Sancho
MonthMinAvgMax
January26.3°C / 79.4°F26.7°C / 80.1°F26.9°C / 80.4°F
February26.4°C / 79.6°F26.8°C / 80.2°F27.0°C / 80.6°F
March26.4°C / 79.6°F26.7°C / 80.1°F26.8°C / 80.3°F
April26.7°C / 80.1°F27.0°C / 80.7°F27.2°C / 80.9°F
May26.8°C / 80.3°F27.2°C / 80.9°F27.3°C / 81.2°F
June26.2°C / 79.2°F26.6°C / 79.9°F26.8°C / 80.3°F
July25.8°C / 78.5°F26.1°C / 79.0°F26.3°C / 79.4°F
August25.5°C / 77.9°F25.8°C / 78.5°F26.1°C / 78.9°F
September25.5°C / 77.9°F25.9°C / 78.6°F26.1°C / 79.0°F
October25.8°C / 78.4°F26.2°C / 79.1°F26.4°C / 79.6°F
November26.2°C / 79.1°F26.5°C / 79.7°F26.8°C / 80.2°F
December26.3°C / 79.4°F26.7°C / 80.0°F26.9°C / 80.5°F

5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes. (Copernicus ERA5)

Baía do Sancho holidays

Enclosed by tall cliffs on the main island of Fernando de Noronha, Baía do Sancho is a bay of golden sand and clear water that can be reached only down ladders set into a crack in the rock or from the sea. Fernando de Noronha is a Brazilian archipelago of 21 islands and islets in the Atlantic, about 350 km off the coast of Rio Grande do Norte and part of the state of Pernambuco.

Beaches

Baía do Sancho faces the calmer "inner sea" of Fernando de Noronha, and snorkellers see sea turtles, rays and reef fish close to the shore. Next door, Baía dos Porcos is a small cove with natural pools and a view of Morro Dois Irmãos, two rocky peaks rising from the sea. On the other side of the island, Baía do Sueste is a sheltered bay where turtles feed, although park rules may prohibit swimming in the bay, and Praia do Leão is a nesting beach for green turtles. The sea temperature on this page is measured off Baía do Sancho.

Things to do

About 70 % of the archipelago belongs to a marine national park created in 1988, and together with Atol das Rocas, Fernando de Noronha is a UNESCO World Heritage Site. From a viewpoint above Baía dos Golfinhos, visitors often see spinner dolphins in the morning; swimming in that bay is not allowed. Diving trips explore the reefs and wrecks around the islands, and the main village, Vila dos Remédios, has an 18th-century fort. Sunset from the Forte do Boldró is a daily ritual.

Weather and best time to visit

At Baía do Sancho the sea stays above 26 °C / 79 °F all year, even in the coolest month.

Fernando de Noronha is warm all year. The rainy season runs roughly from March to July, while August to February is drier and sunnier. From about December to March, swells from the north reach the inner-sea side, bringing surf to Cacimba do Padre and sometimes rougher water at Baía do Sancho, and the rest of the year is usually calm.

Hotels and where to stay

Accommodation on Fernando de Noronha is mainly in pousadas, small guesthouses spread around Vila dos Remédios, Floresta Nova and Vila do Boldró, and the number of visitors is limited. Most tourists pay a daily environmental preservation fee, and a separate ticket is needed to visit the national park, with some exemptions.

Signature hotels: Pousada Maravilha (BR-363)

Airport and getting there

Fernando de Noronha Airport (FEN) is served by flights from the Brazilian mainland, including Recife, about an hour and a half away; routes change, so check whether a flight is direct or needs a connection. No passenger ferries run from the mainland to Fernando de Noronha, and on the island visitors get around by buggy, taxi or the bus that runs along the main road, the BR-363.

Frequently asked questions

Is the sea at Baía do Sancho warm enough for swimming today?

Today, October 28, the sea at Baía do Sancho is 27.1 °C (81 °F) – refreshing to pleasantly warm water, ideal for most people. The usual October average is 27.1 °C / 81 °F.

What is a good sea temperature for swimming?

No single number works for everyone, so the scale on this page is only a guide to how the water feels: below 13 °C / 55 °F only for cold-water swimmers, 13–18 °C / 55–64 °F icy, 18–23 °C / 64–73 °F cold to refreshing, 23–28 °C / 73–82 °F refreshing to pleasantly warm and above 28 °C / 82 °F as warm as a bath. Right now the sea at Baía do Sancho is 27.1 °C / 81 °F.

Can you swim at Baía do Sancho in September?

Yes – the sea at Baía do Sancho (Fernando de Noronha, Brazil) stays swimmable all year. September is the coolest month, averaging 26.8 °C / 80 °F – refreshing to pleasantly warm water, ideal for most people.

When is the sea warmest at Baía do Sancho?

In April, at 29.1 °C / 84 °F on average. The coolest month is September at 26.8 °C / 80 °F – still above the 18 °C / 64 °F swimming line, so there is no off-season for swimming.