December weather forecast
Welikadamulla, Sri Lanka

December, the first month of the winter in Welikadamulla, is still a warm month, with an average temperature fluctuating between 23.7°C (74.7°F) and 29.9°C (85.8°F).

Temperature

At the start of December, Welikadamulla's average high-temperature reaches a moderately hot 29.9°C (85.8°F), subtly different from the preceding month. An average low-temperature of 23.7°C (74.7°F) is observed during the December nights.

Heat index

For most parts of December, the heat index is computed to be a fiery hot 37°C (98.6°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might 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 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in December in Welikadamulla is 79%.

Rainfall

In Welikadamulla, during December, the rain falls for 21.1 days and regularly aggregates up to 148mm (5.83") of precipitation. In Welikadamulla, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year in Welikadamulla.
On the first day of December, sunrise is at 06:06 and sunset at 17:50. On the last day of the month, sunrise is at 06:20 and sunset at 18:04 +0530.

Sunshine

In December, the average sunshine is 6.9h.

UV index

The months with the highest UV index in Welikadamulla are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.