December weather forecastIdama, Sri Lanka

Weather in December

December, the first month of the winter in Idama, is still a warm month, with temperature in the range of an average low of 24.4°C (75.9°F) and an average high of 29.7°C (85.5°F).

Temperature

Idama's transition from November to December introduces an average high-temperature of a still warm 29.7°C (85.5°F), marking an insignificant variation from the 29.8°C (85.6°F). During the month of December, an average low-temperature of 24.4°C (75.9°F) is recorded.

Heat index

The heat index for December is appraised at a sweltering 36°C (96.8°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
One should consider that heat index numbers are for shaded settings and light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Idama, Sri Lanka, the average relative humidity in December is 79%.

Rainfall

In December, in Idama, the rain falls for 16.5 days. Throughout December, 93mm (3.66") of precipitation is accumulated. Throughout the year, in Idama, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Idama, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:06 and sunset at 17:52. On the last day of December, in Idama, sunrise is at 06:21 and sunset at 18:05 +0530.

Sunshine

The average sunshine in December is 7.1h.

UV index

January through April, July, September through 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 radiation for the ordinary person.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.