February weather forecast
São Luís, Brazil

In February, weather in São Luís fluctuates minimally from January’s patterns, experiencing still high, but slightly less intense temperatures. Rainfall volume increases remarkably from January's 244mm (9.61") to a heavier 373mm (14.69"). Interactions with the sun are enabled by 12.2 hours of daylight, though protection is warranted due to a UV index up to 12, same as the previous month. The city endures its second wettest month of the year in February, with frequent downpours and overall high humidity.

Temperature

São Luís's lowest average temperatures are recorded in February and March, reaching a high of 29.4°C (84.9°F).

Heat index

The heat index in February is appraised at a sweltering 38°C (100.4°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In São Luís, Brazil, the average relative humidity in February is 88%.

Rainfall

In February, the rain falls for 17 days. Throughout February, 373mm (14.69") of precipitation is accumulated. In São Luís, Brazil, during the entire year, the rain falls for 130 days and collects up to 2290mm (90.16") of precipitation.

Sea temperature

In São Luís, in February, the average water temperature is 28.8°C (83.8°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

In February, the average length of the day in São Luís is 12h and 11min.
On the first day of February in São Luís, sunrise is at 06:03 and sunset at 18:17. On the last day of the month, sunrise is at 06:04 and sunset at 18:14 -03.

Sunshine

In February, the average sunshine in São Luís is 4.1h.

UV index

January through April, September through December, with an average maximum UV index of 12, are months with the highest UV index in São Luís. A UV Index estimate of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV rays for the average person.
Note: In February, the UV index of 12 transforms into the following advice:
Take every vital safeguard, as unprotected skin and eyes may suffer burns rapidly. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.