December weather forecast
Galewela, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Galewela, Sri Lanka, with temperature in the range of an average high of 29.3°C (84.7°F) and an average low of 21.4°C (70.5°F).

Temperature

In Galewela, the months of January and December are known for the lowest temperatures, reaching an average high of 29.3°C (84.7°F).

Heat index

During December, the heat index is appraised at a torrid 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. 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. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

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

Rainfall

In Galewela, during December, the rain falls for 22.9 days and regularly aggregates up to 127mm (5") of precipitation. Throughout the year, in Galewela, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 06:05 and sunset at 17:47. On the last day of the month, sunrise is at 06:20 and sunset at 18:01 +0530.

Sunshine

The month with the least sunshine in Galewela is December, with an average of 4.9h of sunshine.

UV index

The months with the lowest UV index in Galewela are January, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in December leads to these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.