December weather forecast
San Rafael del Sur, Nicaragua

December brings the year to a close with stable and dry weather conditions in San Rafael del Sur. With the rainfall reaching as low as 5mm (0.2"), festivities are often celebrated under clear skies. The wind speed in December climbs back to nearly its January level, signifying the return to original weather conditions. Cooler nights and extended sunshine hours add a festive toast to celebrate the year-end.

Temperature

With the onset of December, the average high-temperature registers at a still hot 30.4°C (86.7°F), subtly different from November's 30.1°C (86.2°F). San Rafael del Sur records a steady low-temperature average of 23.9°C (75°F) during December.

Heat index

In December, the heat index is computed to be a sweltering 36°C (96.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 hold particular significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In San Rafael del Sur, the average relative humidity in December is 70%.

Rainfall

December is the last month it rains in San Rafael del Sur. During 4.2 rainfall days, in December, San Rafael del Sur aggregates 5mm (0.2") of precipitation. Throughout the year, in San Rafael del Sur, there are 177.4 rainfall days, and 1153mm (45.39") of precipitation is accumulated.

Daylight

December has the shortest days of the year in San Rafael del Sur, with an average of 11h and 24min of daylight.
On the first day of December, sunrise is at 05:50 and sunset at 17:19. On the last day of the month, sunrise is at 06:05 and sunset at 17:32 CST.

Sunshine

In December, the average sunshine in San Rafael del Sur is 8.8h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index in San Rafael del Sur. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in December interprets into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing.