March weather forecast
Macapá, Brazil

Compared to February, weather conditions in March in Macapá, shows slight changes. There’s an increase in rainfall, registering a total of 375mm (14.76") for the month, making it the wettest month of the year. The height of daylight hours remains constant, but the number of sunshine days sees a marginal dip. The temperatures are relatively stable compared to the preceding two months.

Temperature

Macapá witnesses its lowest temperatures in March and April, reaching an average of 28.8°C (83.8°F).

Heat index

In March, the average heat index is evaluated at a very hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

March and April, with an average relative humidity of 86%, are the most humid months.

Rainfall

The month with the most rainfall in Macapá is March, when the rain falls for 30.6 days and typically aggregates up to 375mm (14.76") of precipitation.

Sea temperature

The months with the coldest seawater in Macapá are February through April, with an average sea temperature of 27.7°C (81.9°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

The months with the shortest days are March and September, with an average of 12h and 6min of daylight.
On the first day of March, sunrise is at 06:33 and sunset at 18:39. On the last day of the month, sunrise is at 06:24 and sunset at 18:31 -03.

Sunshine

February and March, with an average of 6.1h of sunshine, are months with the least sunshine in Macapá.

UV index

January through April and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 in March converts into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Notice! The Sun's UV exposure elevates with sand and water reflections.