December weather forecast
Ambepussa, Sri Lanka

December, the first month of the winter in Ambepussa, is also a moderately hot month, with an average temperature varying between 23.7°C (74.7°F) and 29.9°C (85.8°F).

Temperature

At the onset of December, Ambepussa records an average high-temperature of a moderately hot 29.9°C (85.8°F), showing little deviation from the preceding month. During the nights in December, Ambepussa experiences a consistent average temperature of 23.7°C (74.7°F).

Heat index

For December, the heat index is calculated to be a torrid 37°C (98.6°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Ambepussa, the average relative humidity in December is 79%.

Rainfall

In Ambepussa, in December, during 20.3 rainfall days, 139mm (5.47") of precipitation is typically accumulated. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") 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 06:06 and sunset at 17:50. On the last day of the month, sunrise is at 06:20 and sunset at 18:03 +0530.

Sunshine

In December, the average sunshine is 7h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, an average UV index of 7 transforms into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.