São Luís
Brazil
Long-term weather forecast
Long-term weather forecast

February weather forecast and climate
São Luís, Brazil

February, the last month of the summer, in São Luís, is another warm month, with average temperature ranging between max 29.4°C (84.9°F) and min 23.1°C (73.6°F).

Temperature

The coldest months are February and March, with an average high-temperature of 29.4°C (84.9°F).

Heat index

In February, the average heat index is calculated to a sweltering 37.9°C (100.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, wind, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In February, the average relative humidity is 88%.

Rainfall

In São Luís, during 17 rainfall days, 373mm (14.7") of precipitation is typically accumulated. Throughout the year, in São Luís, Brazil, there are 130 rainfall days, and 2290.2mm (90.2") of precipitation is accumulated.

Sea temperature

In São Luís, in February, the average water temperature is 28.8°C (83.8°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In São Luís, the average length of the day in February is 12.2h.

Sunshine

In São Luís, Brazil, the average sunshine 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, Brazil. A UV Index reading of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in São Luís?

February and March, with an average high-temperature of 29.4°C (84.9°F), are the coldest months in São Luís.

What is the temperature in February in São Luís?

In São Luís, in February, the average high-temperature is 29.4°C (84.9°F), and the average low-temperature is 23.1°C (73.6°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in February is appraised at 37.9°C (100.2°F).

What is the average humidity in February in São Luís?

In February, the average relative humidity is 88%.

How much does it rain in São Luís in February?

In February, in São Luís, the rain falls for 17 days. Throughout February, 373mm (14.7") of precipitation is accumulated.

What is the sea water temperature in February in São Luís?

In São Luís, in February, the average water temperature is 28.8°C (83.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does São Luís have in February?

In February, the average length of the day is 12.2h.

How many hours of sunshine does São Luís have in February?

The average sunshine in February is 4.1h.

What is the month with the highest UV index in São Luís?

Months with the highest UV index in São Luís are January through April, September through December, with an average maximum UV index of 12.

How high is the UV index in February in São Luís?

The average daily maximum UV index in February in São Luís is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in February - São Luís, Brazil
  • Average high temperature in February: 29.4°C

The warmest month (with the highest average high temperature) is November (31.4°C).
Months with the lowest average high temperature are February and March (29.4°C).

  • Average low temperature in February: 23.1°C

Months with the highest average low temperature are November and December (24°C).
The coldest month (with the lowest average low temperature) is July (22.6°C).

Average humidity in February - São Luís, Brazil
  • Average humidity in February: 88%

The month with the highest relative humidity is April (90%).
The month with the lowest relative humidity is December (71%).

Average rainfall in February - São Luís, Brazil
  • Average rainfall in February: 373mm

The wettest month (with the highest rainfall) is April (475.9mm).
The driest month (with the lowest rainfall) is October (7.6mm).

Average rainfall days in February - São Luís, Brazil
  • Average rainfall days in February: 17 days

The month with the highest number of rainy days is March (23 days).
Months with the lowest number of rainy days are October and November (1 days).

Average sea temperature in February - São Luís, Brazil
  • Average sea temperature in February: 28.8°C

The best month for swimming (with the highest average sea temperature) is March (28.9°C).
The coldest month (with the lowest average sea temperature) is September (27.3°C).

Average daylight in February / Average sunshine in February - São Luís, Brazil
  • Average daylight in February: 12.2h

Months with the longest days are January and December (Average daylight: 12.3h).
Months with shortest days are May, June, July and August (Average daylight: 12h).

  • Average sunshine in February: 4.1h

The month with most sunshine is August (Average sunshine: 8.4h).
The month with least sunshine is March (Average sunshine: 3.5h).

Average UV index in February - São Luís, Brazil
  • Average UV index in February: 12

Months with the highest UV index are January, February, March, April, September, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 10).