December weather forecast
Porto Seguro, Brazil

December showcases typical summer characteristics in Porto Seguro, Brazil. The temperature steadily ranges between 23.7°C (74.7°F) and 28.5°C (83.3°F) reflecting a tropical climate. December is highly anticipated by the locals as it marks the beginning of the City's prominent cultural events. There's a balance between rainfall and sunshine hours, exhibiting a classic wet summer scenario. Regardless of the increased precipitation, Porto Seguro stands as an ideal spot for a Christmas holiday full of cultural richness and warmth.

Temperature

The transition into December in Porto Seguro, Brazil, is marked with an average high-temperature of a still warm 28.5°C (83.3°F), showing an insignificant shift from November's 27.5°C (81.5°F). A mean low-temperature of 23.7°C (74.7°F) is anticipated during the month of December in Porto Seguro, a slight step down from the daytime high.

Heat index

The heat index for December is computed to be a tropical 33°C (91.4°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.

Humidity

In December, the average relative humidity in Porto Seguro is 80%.

Rainfall

In Porto Seguro, during December, the rain falls for 17.2 days and regularly aggregates up to 90mm (3.54") of precipitation. In Porto Seguro, during the entire year, the rain falls for 228.4 days and collects up to 919mm (36.18") of precipitation.

Sea temperature

In December, the average sea temperature is 26.7°C (80.1°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

With an average of 13h and 6min of daylight, December has the longest days of the year in Porto Seguro.
On the first day of the month, sunrise is at 04:54 and sunset at 17:56. On the last day of December, sunrise is at 05:06 and sunset at 18:12 -03.

Sunshine

In December, the average sunshine is 8.9h.

UV index

The months with the highest UV index in Porto Seguro are January through March, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 7 during December translates into the following guidance:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat. Stay aware! UV radiation is magnified when reflecting off sand and water.