December weather forecast
Lunuwila, Sri Lanka

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

Temperature

Lunuwila experiences a minor change to a warm 29.9°C (85.8°F) in average high-temperature during December, closely reflecting November. Lunuwila, during December, witnesses an average low-temperature of 23.7°C (74.7°F).

Heat index

Throughout December, the heat index is estimated at a torrid 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Consider that heat index readings are for situations in the shade and light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Lunuwila, during December, the rain falls for 20.3 days and regularly aggregates up to 139mm (5.47") of precipitation. In Lunuwila, Sri Lanka, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year in Lunuwila, Sri Lanka.
On the first day of the month, sunrise is at 06:07 and sunset at 17:51. On the last day of December, sunrise is at 06:22 and sunset at 18:04 +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 reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, a regular UV index of 7 translates into these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.