December weather forecast
Divulapitiya, Sri Lanka

By December, Divulapitiya manages to maintain moderate conditions with little variation in temperature and a decrease in rainfall. The weather pivots to a more standard profile, with rainfall further decreasing to 139mm (5.47"), leading to more sunny days on the horizon. The decreased rainfall coupled with the consistent sunlight promises clear skies for more significant parts of December. Enshrining the true essence of a tropical climate, December provides a unique blend of warm sunny days with occasional rainfall. Wind speed remains fairly consistent, keeping the weather delightful as Christmas and the New Year approach.

Temperature

December's onset in Divulapitiya records a minor alteration in the average high-temperature to a warm 29.9°C (85.8°F) from November's 30.2°C (86.4°F). The average temperature during December nights in Divulapitiya is registered at a still moderately hot 23.7°C (74.7°F).

Heat index

The heat index for December is computed to be a sweltering 37°C (98.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Divulapitiya, the average relative humidity in December is 79%.

Rainfall

In Divulapitiya, in December, it is raining for 20.3 days, with typically 139mm (5.47") of accumulated precipitation. In Divulapitiya, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:07 and sunset at 17:51. On the last day of December, sunrise is at 06:21 and sunset at 18:04 +0530.

Sunshine

In Divulapitiya, Sri Lanka, the average sunshine in December is 7h.

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 risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.