February weather forecast
Guaratuba, Brazil

February, the last month of the summer in Guaratuba, is also a moderately hot month, with an average temperature varying between 29.3°C (84.7°F) and 21.2°C (70.2°F).

Temperature

The dawn of February sees an average high-temperature of a still moderately hot 29.3°C (84.7°F), subtly contrasting with January's 29.4°C (84.9°F). During the month of February, an average temperature of 21.2°C (70.2°F) is noted during the nights.

Heat index

The heat index in February is estimated at a fiery hot 36°C (96.8°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. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. 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.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The months with the lowest humidity are January, February and December, with an average relative humidity of 82%.

Rainfall

February is the month with the most rainfall in Guaratuba. Rain falls for 19.9 days and accumulates 141mm (5.55") of precipitation.

Sea temperature

February is the month with the warmest seawater, with an average sea temperature of 26.8°C (80.2°F).
Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.

Daylight

In February, the average length of the day is 12h and 58min.
On the first day of the month, sunrise is at 05:49 and sunset at 19:06. On the last day of February, in Guaratuba, sunrise is at 06:07 and sunset at 18:45 -03.

Sunshine

The average sunshine in February in Guaratuba is 6.7h.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during February leads to these instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Alert! UV radiation becomes sharper due to reflections from sand and water.