December weather forecast
Kegalle, Sri Lanka

December seals the weather calendar of Kegalle with the lowest temperature seen throughout the year, recording a mild 27.5°C (81.5°F) at the higher end and a chillier 19.5°C (67.1°F) at the lower. The rainfall decreases to 118mm (4.65"), signaling quieter weather compared to the past two months. A decline in sunshine hours hints at shorter days, while a slight increase in wind velocity is observed, reaching 6.7km/h (4.2mph). Despite the slight cold, December rounds off with a pleasant and relatively dry overview.

Temperature

December is the coldest month of the year, registering average temperatures as high as 27.5°C (81.5°F) and as low as 19.5°C (67.1°F).

Heat index

The heat index for December is estimated at a tropical 31°C (87.8°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

The most humid month in Kegalle is December, with an average relative humidity of 84%.

Rainfall

In Kegalle, in December, during 22.9 rainfall days, 118mm (4.65") of precipitation is typically accumulated. In Kegalle, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

December has the shortest days of the year in Kegalle, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:05 and sunset at 17:49. On the last day of December, sunrise is at 06:20 and sunset at 18:03 +0530.

Sunshine

December has the least sunshine of the year in Kegalle, with an average of 5.7h of sunshine.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Kegalle. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.