December weather forecast
Tolú, Colombia

The first month of the winter, December, is still a tropical month in Tolú, Colombia, with an average temperature ranging between max 31.8°C (89.2°F) and min 24.2°C (75.6°F).

Temperature

Tolú's average high-temperature in December sits at a still hot 31.8°C (89.2°F), showing little difference from the previous month. During December, an average low-temperature of 24.2°C (75.6°F) is observed in Tolú.

Heat index

Throughout December, the heat index is estimated at an extremely hot 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in December in Tolú is 76%.

Rainfall

In December, the rain falls for 16.7 days. Throughout December, 43mm (1.69") of precipitation is accumulated. In Tolú, during the entire year, the rain falls for 234.4 days and collects up to 904mm (35.59") of precipitation.

Daylight

December has the shortest days of the year in Tolú, with an average of 11h and 36min of daylight.
On the first day of the month, sunrise is at 06:03 and sunset at 17:39. On the last day of December, sunrise is at 06:18 and sunset at 17:53 -05.

Sunshine

December has the least sunshine of the year in Tolú, with an average of 7.1h of sunshine.

UV index

The months with the highest UV index in Tolú, Colombia, are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Tolú are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, a regular UV index of 7 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely.