December weather forecast
Embilipitiya, Sri Lanka

December signifies the end of the rainy season and a transition towards cooler and drier weather. As the last month of the year, December experiences decreased rainfall compared to November and improved visibility of approximately 10km (6.2mi). The average high temperature is about 29°C (84.2°F), maintaining pleasant weather throughout the month. Despite the end of the rainy season, the humidity level remains steady at about 79%, experiencing a relatively high pressure of 1010.2mb. Bringing warmth and joy to the holiday season, December offers a pleasant end to the year with comforting weather conditions.

Temperature

Embilipitiya's coldest weather arrives in December, when temperatures average a high of 29°C (84.2°F) and a low of 24.5°C (76.1°F).

Heat index

Throughout December, the heat index is evaluated at a fiery hot 35°C (95°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The months with the highest humidity are November and December, with an average relative humidity of 79%.

Rainfall

In Embilipitiya, in December, during 20.1 rainfall days, 131mm (5.16") of precipitation is typically accumulated. Throughout the year, there are 192.9 rainfall days, and 942mm (37.09") of precipitation is accumulated.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year.
On the first day of December in Embilipitiya, sunrise is at 06:02 and sunset at 17:49. On the last day of the month, sunrise is at 06:16 and sunset at 18:02 +0530.

Sunshine

The month with the least sunshine in Embilipitiya is December, with an average of 6.6h of sunshine.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during December translates into these guidelines:
Shield from overexposure. Defense against sun-related harm is required. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.