March weather forecast
Maria Helena, Brazil

The first month of the autumn, March, is also a moderately hot month in Maria Helena, Brazil, with an average temperature fluctuating between 19.5°C (67.1°F) and 28.9°C (84°F).

Temperature

Maria Helena experiences an average high-temperature of a still moderately hot 28.9°C (84°F) with the onset of March, subtly varied from February's 29.3°C (84.7°F). An average nighttime temperature of 19.5°C (67.1°F) is noted during the month of March.

Heat index

For March, the heat index is estimated at a very hot 35°C (95°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. 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. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in March is 83%.

Rainfall

In Maria Helena, during March, the rain falls for 17.4 days and regularly aggregates up to 71mm (2.8") of precipitation. Throughout the year, there are 176.1 rainfall days, and 1057mm (41.61") of precipitation is accumulated.

Daylight

In March, the average length of the day in Maria Helena is 12h and 13min.
On the first day of the month, sunrise is at 06:28 and sunset at 19:01. On the last day of March, sunrise is at 06:40 and sunset at 18:32 -03.

Sunshine

In Maria Helena, the average sunshine in March is 8.4h.

UV index

The months with the highest UV index are January through March, August through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in March converts into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.