December weather forecast
Kirindiwela, Sri Lanka

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

Temperature

Transitioning into December, Kirindiwela experiences an average high-temperature of a moderately hot 29.9°C (85.8°F), marking a minor shift from the preceding month. Throughout December, an average low-temperature of 23.7°C (74.7°F) is experienced in Kirindiwela.

Heat index

December's heat index is estimated 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.
Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in December in Kirindiwela is 79%.

Rainfall

In December, in Kirindiwela, the rain falls for 21.1 days. Throughout December, 148mm (5.83") of precipitation is accumulated. In Kirindiwela, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year in Kirindiwela.
On the first day of the month, sunrise is at 06:06 and sunset at 17:50. On the last day of December, in Kirindiwela, sunrise is at 06:20 and sunset at 18:04 +0530.

Sunshine

The average sunshine in December in Kirindiwela is 6.9h.

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 reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.