December weather forecast
Dikwella, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Dikwella, Sri Lanka, with an average temperature fluctuating between 29.9°C (85.8°F) and 23.8°C (74.8°F).

Temperature

The commencement of December notes an average high-temperature of a still warm 29.9°C (85.8°F), exhibiting little difference from the previous month. Throughout the nights in December, Dikwella experiences an average low-temperature of 23.8°C (74.8°F).

Heat index

December's mean heat index is evaluated at a torrid 37°C (98.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. 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', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. 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. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Dikwella, the average relative humidity in December is 80%.

Rainfall

In Dikwella, in December, during 17.5 rainfall days, 48mm (1.89") of precipitation is typically accumulated. Throughout the year, in Dikwella, there are 180 rainfall days, and 509mm (20.04") of precipitation is accumulated.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Dikwella, Sri Lanka.
On the first day of December in Dikwella, Sri Lanka, sunrise is at 06:02 and sunset at 17:50. On the last day of the month, sunrise is at 06:16 and sunset at 18:03 +0530.

Sunshine

With an average of 6.9h of sunshine, December has the least sunshine of the year in Dikwella.

UV index

The months with the highest UV index in Dikwella are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 7 in December translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.