March weather forecast
Alcântara, Brazil

March, the first month of the autumn in Alcântara, is still a warm month, with an average temperature fluctuating between 29.2°C (84.6°F) and 25.1°C (77.2°F).

Temperature

The onset of March marks an average high-temperature of a still warm 29.2°C (84.6°F), hardly differing from February's 29.1°C (84.4°F). In Alcântara, March is characterized by an average low-temperature of 25.1°C (77.2°F), indicating a minor drop from daytime highs.

Heat index

For most parts of March, the heat index is estimated at a very hot 36°C (96.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in March is 83%.

Rainfall

In March, in Alcântara, the rain falls for 30.7 days. Throughout March, 405mm (15.94") of precipitation is accumulated. In Alcântara, Brazil, during the entire year, the rain falls for 291.1 days and collects up to 2596mm (102.2") of precipitation.

Sea temperature

The month with the warmest seawater is March, with an average sea temperature of 29°C (84.2°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.

Daylight

In Alcântara, the average length of the day in March is 12h and 7min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:14. On the last day of March, sunrise is at 05:58 and sunset at 18:04 -03.

Sunshine

In Alcântara, the average sunshine in March is 7.6h.

UV index

The months with the lowest UV index are January through March, May and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 6 in March suggests the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take caution! The UV rays from the Sun gain strength from sand and water reflections.