March weather forecast
São Fernando, Brazil

The first month of the autumn, March, is still a hot month in São Fernando, Brazil, with an average temperature varying between 34°C (93.2°F) and 23.3°C (73.9°F).

Temperature

Entering March, São Fernando's average high-temperature reads a still tropical 34°C (93.2°F), indicating a close resemblance to the previous month's climate. March witnesses an average nighttime temperature of 23.3°C (73.9°F).

Heat index

In March, the average heat index is calculated to be a blisteringly hot 44°C (111.2°F). Stay mindful: Heat exhaustion and heat cramps are likely. Heatstroke could follow extended physical effort.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In São Fernando, the average relative humidity in March is 65%.

Rainfall

March is the month with the most rainfall in São Fernando. Rain falls for 20.5 days and accumulates 106mm (4.17") of precipitation.

Daylight

In March, the average length of the day is 12h and 8min.
On the first day of the month, sunrise is at 05:34 and sunset at 17:47. On the last day of March, sunrise is at 05:31 and sunset at 17:34 -03.

Sunshine

The month with the least sunshine in São Fernando is March, with an average of 8.6h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in São Fernando. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 7 during March translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.