December weather forecast
Kaduwela, Sri Lanka

As the year concludes in Kaduwela, December carries forward the weather pattern of November. The moderate weather conditions mixed with a taste of the dry season creates a pleasant paradox. From rain-kissed afternoons to sunny mornings, the city offers an enchanting palette of weather experiences. The city's charm elevates with the approaching Christmas festivities, adding a dash of vivacity to the weather. As such, December stands out as a comfortable and enjoyable month to be in Kaduwela.

Temperature

The arrival of December in Kaduwela records an average high-temperature of a warm 29.9°C (85.8°F), closely related to the 30.1°C (86.2°F) observed in November. Kaduwela reports a consistent average low-temperature of 23.7°C (74.7°F) throughout December nights.

Heat index

The heat index value during December is estimated at a torrid 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In Kaduwela, in December, it is raining for 21.1 days, with typically 148mm (5.83") of accumulated precipitation. Throughout the year, in Kaduwela, Sri Lanka, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:06 and sunset at 17:51. On the last day of December, in Kaduwela, sunrise is at 06:21 and sunset at 18:05 +0530.

Sunshine

In Kaduwela, the average sunshine in December 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 of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 7 during December translates into these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.