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 showcases a mildly sunny, barely rainy climate, wrapping up the year beautifully.

Temperature

Entering December, Kuliyapitiya's average high-temperature reads a warm 29.9°C (85.8°F), indicating a close resemblance to the previous month's climate. In the month of December, the average low-temperature usually rests at a still moderately hot 23.7°C (74.7°F).

Heat index

December's mean heat index is estimated at a very hot 37°C (98.6°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in December is 79%.

Rainfall

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

Daylight

December has the shortest days of the year, 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

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 in Kuliyapitiya. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 7 in December suggests the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.