December weather forecast
Vigia, Brazil

The first month of the summer, December, is still a hot month in Vigia, Brazil, with temperature in the range of an average low of 24.9°C (76.8°F) and an average high of 30.5°C (86.9°F).

Temperature

In December, Vigia experiences a minor shift in meteorological conditions with average high-temperatures marked at a still tropical 30.5°C (86.9°F), closely mirroring the climate in November. Throughout the month of December, Vigia observes an average nighttime temperature of 24.9°C (76.8°F).

Heat index

December's mean heat index is computed to be a torrid 39°C (102.2°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In December, the average relative humidity is 78%.

Rainfall

In Vigia, in December, it is raining for 24.7 days, with typically 172mm (6.77") of accumulated precipitation. In Vigia, during the entire year, the rain falls for 315.6 days and collects up to 2313mm (91.06") of precipitation.

Sea temperature

In December, the average sea temperature is 28.7°C (83.7°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and other activities, ensuring comfort and enjoyment for lengthened periods.

Daylight

The month with the longest days is December, with an average of 12h and 12min of daylight.
On the first day of the month, sunrise is at 05:56 and sunset at 18:06. On the last day of December, sunrise is at 06:10 and sunset at 18:21 -03.

Sunshine

In December, the average sunshine in Vigia, Brazil, is 8.3h.

UV index

January, June through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Stay cautious! Sand and water reflections increase UV radiation potency.