December weather forecast
Macacona, Costa Rica

The first month of the winter, December, is still a warm month in Macacona, Costa Rica, with temperature in the range of an average high of 29.7°C (85.5°F) and an average low of 22.1°C (71.8°F).

Temperature

The arrival of December records an average high-temperature of a still moderately hot 29.7°C (85.5°F), closely related to the 29.1°C (84.4°F) observed in November. An average low-temperature of 22.1°C (71.8°F) is expected during December.

Heat index

December's heat index is estimated at a sweltering 35°C (95°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Macacona, the average relative humidity in December is 75%.

Rainfall

In Macacona, in December, it is raining for 10.8 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, there are 218.6 rainfall days, and 1456mm (57.32") of precipitation is accumulated.

Daylight

With an average of 11h and 36min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 05:40 and sunset at 17:15. On the last day of the month, sunrise is at 05:55 and sunset at 17:28 CST.

Sunshine

The average sunshine in December is 9.6h.

UV index

January through September and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.