December weather forecast
Kuliyapitiya, Sri Lanka

December marks the definitive end of the monsoon with a significant drop in rainfall to 139mm (5.47") from November's 174mm (6.85"). While the daylight span remains fairly constant, sunshine hours see a pleasant increase. The temperatures maintain the tropical climate, while a slight decline in humidity shows an overall improvement in weather conditions. Distinct from the previous months, the relatively less rainfall and increased sunshine welcome visitors to the full charm of Sri Lanka. December in Kuliyapitiya showcases a mildly sunny, barely rainy climate, wrapping up the year beautifully.

Temperature

December's arrival in Kuliyapitiya shows an average high-temperature of a moderately hot 29.9°C (85.8°F), hardly different from the previous month. Throughout December, Kuliyapitiya experiences a low-temperature average of 23.7°C (74.7°F).

Heat index

The heat index in December is calculated to be a sweltering 37°C (98.6°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in December is 79%.

Rainfall

In Kuliyapitiya, during December, the rain falls for 20.3 days and regularly aggregates up to 139mm (5.47") of precipitation. Throughout the year, in Kuliyapitiya, Sri Lanka, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Kuliyapitiya, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:07 and sunset at 17:50. On the last day of December, sunrise is at 06:21 and sunset at 18:03 +0530.

Sunshine

In Kuliyapitiya, 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 estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.