December weather forecast
Weerawila, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Weerawila, Sri Lanka, with an average temperature varying between 24.5°C (76.1°F) and 29°C (84.2°F).

Temperature

December is the coldest month, exhibiting average temperatures of 29°C (84.2°F) at the peak and 24.5°C (76.1°F) at the base.

Heat index

December's average heat index is evaluated at a torrid 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The months with the highest humidity are November and December, with an average relative humidity of 79%.

Rainfall

In December, the rain falls for 20.1 days. Throughout December, 131mm (5.16") of precipitation is accumulated. Throughout the year, there are 192.9 rainfall days, and 942mm (37.09") of precipitation is accumulated.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Weerawila.
On the first day of December, sunrise is at 06:00 and sunset at 17:47. On the last day of the month, sunrise is at 06:15 and sunset at 18:01 +0530.

Sunshine

December has the least sunshine of the year, with an average of 6.6h of sunshine.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 7 in December leads to these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.