March weather forecast
Teresina, Brazil

There is a transition in Teresina's climate from February to March. While the latter witnesses the highest volumes of rainfall in the year, at 285mm (11.22"), temperatures and humidity stabilize similar to February. Sunshine hours take a slight dip, thus creating a slightly more subdued ambiance compared to the earlier months. Wind speed remains more or less consistent. Overall, March in Teresina is typified by intensive rain showers and constant warm temperatures.

Temperature

As Teresina ushers in March, the high temperature records at a still hot 31.5°C (88.7°F), matching the readings of the prior month. March nights experience a consistent temperature drop to a pleasant 22.9°C (73.2°F).

Heat index

The average heat index in March is calculated to be a scorching 44°C (111.2°F). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

March and April, with an average relative humidity of 83%, are the most humid months in Teresina.

Rainfall

The month with the most rainfall in Teresina is March, when the rain falls for 30.1 days and typically aggregates up to 285mm (11.22") of precipitation.

Daylight

In March, the average length of the day is 12h and 8min.
On the first day of March in Teresina, sunrise is at 05:57 and sunset at 18:09. On the last day of the month, sunrise is at 05:53 and sunset at 17:57 -03.

Sunshine

The average sunshine in March in Teresina, Brazil, is 7.8h.

UV index

January, March through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 7 in March translates into this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.