December weather forecast
Comunidad, Costa Rica

December, the first month of the winter in Comunidad, is still a warm month, with an average temperature ranging between max 29.5°C (85.1°F) and min 22.2°C (72°F).

Temperature

The onset of December brings with it an average high-temperature of a still moderately hot 29.5°C (85.1°F), showing a negligible variation from the month before. During the month of December, the temperature in Comunidad generally drops to a low average of 22.2°C (72°F).

Heat index

For December, the heat index is computed to be a torrid 36°C (96.8°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. 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 particularly meaningful for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in December is 78%.

Rainfall

In Comunidad, in December, it is raining for 5.7 days, with typically 9mm (0.35") of accumulated precipitation. In Comunidad, during the entire year, the rain falls for 188.5 days and collects up to 1202mm (47.32") of precipitation.

Daylight

With an average of 11h and 30min of daylight, December has the shortest days of the year in Comunidad, Costa Rica.
On the first day of the month, sunrise is at 05:45 and sunset at 17:18. On the last day of December, in Comunidad, sunrise is at 06:00 and sunset at 17:31 CST.

Sunshine

The average sunshine in December is 9.6h.

UV index

The months with the highest UV index are January through October and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 in December interprets into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. 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.