December weather forecast
Andagala, Sri Lanka

The first month of the winter, December, is still a warm month in Andagala, Sri Lanka, with an average temperature fluctuating between 29.3°C (84.7°F) and 21.4°C (70.5°F).

Temperature

January and December mark Andagala's lowest temperatures, averaging a high-temperature of 29.3°C (84.7°F).

Heat index

December's average heat index is estimated at a torrid 37°C (98.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

With an average relative humidity of 84%, December is the most humid month in Andagala, Sri Lanka.

Rainfall

In Andagala, Sri Lanka, in December, it is raining for 22.9 days, with typically 127mm (5") of accumulated precipitation. Throughout the year, in Andagala, there are 197 rainfall days, and 950mm (37.4") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:06 and sunset at 17:49. On the last day of December, in Andagala, sunrise is at 06:20 and sunset at 18:02 +0530.

Sunshine

With an average of 4.9h of sunshine, December has the least sunshine of the year in Andagala, Sri Lanka.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.