Guarujá Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Guarujá.

Climate overview of Guarujá

Guarujá is located in Santo Amaro island. It's a a popular weekend destination for mostly families from São Paulo because they can get there driving in less than one hour. Traffic gets very heavy during the evening in December when the school summer/Christmas holiday starts to coincide.

Despite the fact that it is located just outside the tropics, Guarujá has a tropical rainforest climate with no real dry season. The city features warm weather throughout the year, though from June till September the weather in Guarujá is somewhat cooler.

Guarujá Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Guarujá - and find the best time to visit.

Monthly Temperature in Guarujá

The temperature in Guarujá remains steady throughout the year, providing a consistently comfortable climate. Average daytime temperatures reach a comfortable 28°C (82°F) in February. In August, the coolest month of the year, temperatures drop to a comfortable 23°C (73°F).

At night, temperatures range from around 24°C (75°F) in February to 18°C (64°F) in August.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Guarujá

Guarujá has a relatively rainy climate with high precipitation levels, averaging 1980 mm (78 in) of rainfall annually. Guarujá can be quite wet during January, receiving approximately 241 mm (9.5 in) of precipitation over 21 rainy days.

In contrast, during the driest month (August), you will experience much drier conditions, with 98 mm (3.9 in) of precipitation spread across 11 rainy days. For more details, please visit our Guarujá Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Guarujá

Guarujá can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 5.3 hours of sunshine daily. In contrast, the city experiences much darker days in September, with only 3.0 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Santos, Brazil (8 KM, 5 Miles).

Daily hours of sunshine

Data from: Santos, Brazil (8 KM, 5 Miles).

Humidity in Guarujá by Month

Best Time to Visit Guarujá

The most comfortable overall weather for exploring Guarujá is usually found in August. Conditions are generally least comfortable in January, February and March.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: August
  • Warmest weather: January, February, March and December
  • Most sunshine: January, March, May and July
  • Fewest rainy days: May, June, July and August
  • Seasonal pattern: A distinct rainy season from November to March

Frequently asked questions about the climate in Guarujá

What is the best time to visit Guarujá?

August typically offers the most optimal weather in Guarujá. In contrast, January, February and March tend to have less optimal conditions. Guarujá has a distinct rainy season from November to March.

What temperatures can I expect in Guarujá?

Daytime highs range from 23°C (73°F) in August to 28°C (82°F) in February. Nighttime lows range from 18°C (64°F) to 24°C (75°F). Temperatures stay relatively stable year-round.

How much rain does Guarujá get?

Annual rainfall is around 1980 mm (78 in). January is the wettest month with 241 mm (9.5 in), while August is the driest with 98 mm (3.9 in).

How sunny is Guarujá?

Guarujá receives around 1,669 hours of sunshine per year. May is the sunniest month with 160 hours, while September is the cloudiest with just 90 hours.

Guarujá 3-Day Forecast

Guarujá on the map

Guarujá is highlighted - select any city to see its climate.

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Where to go in August - average daytime high across popular destinations.

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