March weather forecast
Santo Antonio, São Tomé and Príncipe

Notwithstanding the temperature ranges similar to February, March signals a change in weather with a stunning increase in rainfall to 186mm (7.32"). Contrasted with the subsequent month, March is substantially drier, yet typically warm. Warm sea temperatures persist, ensuring sea-goers have favorable conditions. The UV index stays at 12, sustaining the need for adequate sun protection. Despite an increase in rainfall, the month maintains an impressive amount of sunlight.

Temperature

The warmest period is usually observed in February and March, with the average high-temperature peaking at 29.6°C (85.3°F).

Heat index

March's heat index is computed to be a fiery hot 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. 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 are especially crucial for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In March, the average relative humidity in Santo Antonio, São Tomé and Príncipe, is 86%.

Rainfall

In Santo Antonio, in March, during 16 rainfall days, 186mm (7.32") of precipitation is typically accumulated. In Santo Antonio, during the entire year, the rain falls for 188 days and collects up to 1872mm (73.7") of precipitation.

Sea temperature

February through May, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

In March, the average length of the day in Santo Antonio, São Tomé and Príncipe, is 12h and 7min.
On the first day of March, sunrise is at 05:39 and sunset at 17:45. On the last day of the month, sunrise is at 05:30 and sunset at 17:38 GMT.

Sunshine

January through June, November and December, with an average of 4h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Santo Antonio are January through May, August through November, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 12 in March transforms into this advice:
Ensure every key safety measure. People with light skin might sustain burns in fewer than 5 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Frequent application of a broad-spectrum SPF 30+ sunscreen is crucial, reapply it every two hours or immediately post swimming or outdoor exercise. Stay aware! UV radiation is magnified when reflecting off sand and water.