March weather forecast
São Paulo, Brazil

March witnesses a distinct change in São Paulo's weather. Rainfall drops to an average of 161mm (6.34"), a significant decrease from the previous months, even as the temperature fluctuations moderate. Gradual cooling begins, with temperature highs dipping to 27.2°C (81°F). Residents can expect lengthening shadows earlier in the evenings with daylight lasting for an average of 12.2 hours. The transition from humid summer to mild autumn becomes evident by the end of March.

Temperature

São Paulo's weather in March indicates an average high-temperature of a still moderately hot 27.2°C (81°F), nearly consistent with the 28°C (82.4°F) of February. The low-temperature average for São Paulo during March stands at a comfortable 18.2°C (64.8°F).

Heat index

The average heat index in March is appraised at a tropical 30°C (86°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

The months with the highest humidity are January, March, April and December, with an average relative humidity of 80%.

Rainfall

In São Paulo, in March, during 11 rainfall days, 161mm (6.34") of precipitation is typically accumulated. Throughout the year, in São Paulo, Brazil, there are 107 rainfall days, and 1441mm (56.73") of precipitation is accumulated.

Daylight

The average length of the day in March is 12h and 13min.
On the first day of March, sunrise is at 06:02 and sunset at 18:35. On the last day of the month, sunrise is at 06:14 and sunset at 18:06 -03.

Sunshine

In São Paulo, the average sunshine in March is 5.4h.

UV index

The months with the highest UV index in São Paulo are January through March, November and December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for the average person.
Note: During March, 12 as the daily maximum UV index converts into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Staying too long under direct sunlight isn't advisable, particularly for those who burn quickly. Use at least a 30 SPF sunscreen for protection.