December weather forecast
Salvador, Brazil

December, the first month of the summer in Salvador, is also a moderately hot month, with an average temperature fluctuating between 23.2°C (73.8°F) and 29°C (84.2°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a still warm 29°C (84.2°F). In December, in Salvador, Brazil, the average low-temperature is 23.2°C (73.8°F).

Heat index

The average heat index in December is computed to be a very hot 35°C (95°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', 'real feel', 'feels like', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, clothing, pregnancy). 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 particularly important for children. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Salvador, the average relative humidity in December is 81.1%.

Rainfall

In Salvador, in December, during 10 rainfall days, 143mm (5.63") of precipitation is typically accumulated. Throughout the year, in Salvador, there are 173 rainfall days, and 2144mm (84.41") of precipitation is accumulated.

Sea temperature

In Salvador, the average water temperature is 27.2°C (81°F).
Note: 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.

Daylight

With an average of 12h and 53min of daylight, December has the longest days of the year in Salvador.
On the first day of December in Salvador, sunrise is at 04:58 and sunset at 17:48. On the last day of the month, sunrise is at 05:10 and sunset at 18:03 -03.

Sunshine

The average sunshine in December is 7.2h.

UV index

January through March, September through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 in December transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.