December weather forecast
Weliweriya West, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Weliweriya West, Sri Lanka, with an average temperature varying between 23.7°C (74.7°F) and 29.9°C (85.8°F).

Temperature

In December, Weliweriya West experiences a minor shift in meteorological conditions with average high-temperatures marked at a moderately hot 29.9°C (85.8°F), closely mirroring the climate in November. Weliweriya West experiences an average low-temperature reading of 23.7°C (74.7°F) throughout December.

Heat index

The heat index value for December is appraised at a very hot 37°C (98.6°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Weliweriya West, Sri Lanka, in December, it is raining for 21.1 days, with typically 148mm (5.83") of accumulated precipitation. Throughout the year, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year in Weliweriya West.
On the first day of December in Weliweriya West, sunrise is at 06:06 and sunset at 17:51. On the last day of the month, sunrise is at 06:21 and sunset at 18:04 +0530.

Sunshine

In Weliweriya West, the average sunshine in December is 6.9h.

UV index

January through April, July, September, November 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 vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in December interprets into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.