December weather forecast
Corozalito, Costa Rica

December, the first month of the winter in Corozalito, is also a moderately hot month, with an average temperature varying between 29.5°C (85.1°F) and 22.5°C (72.5°F).

Temperature

As December takes its course, Corozalito's average high-temperature registers at a still moderately hot 29.5°C (85.1°F), closely aligning with the preceding month. Throughout December, the average low-temperature dips to an agreeable 22.5°C (72.5°F).

Heat index

Throughout December, the heat index is calculated to be a sweltering 36°C (96.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In December, the average relative humidity in Corozalito is 78%.

Rainfall

In Corozalito, in December, it is raining for 10.7 days, with typically 21mm (0.83") of accumulated precipitation. In Corozalito, during the entire year, the rain falls for 205 days and collects up to 1087mm (42.8") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 36min of daylight.
On the first day of the month, sunrise is at 05:43 and sunset at 17:18. On the last day of December, in Corozalito, sunrise is at 05:57 and sunset at 17:31 CST.

Sunshine

In Corozalito, the average sunshine in December is 9.5h.

UV index

The months with the highest UV index in Corozalito, Costa Rica, are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 7 translates into these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.