December weather forecast
Bombuwala, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Bombuwala, Sri Lanka, with an average temperature ranging between min 24.4°C (75.9°F) and max 29.7°C (85.5°F).

Temperature

The beginning of December reveals an average high-temperature of a still warm 29.7°C (85.5°F), showing minimal deviation from the previous month. In December, the recorded average low-temperature is a still warm 24.4°C (75.9°F).

Heat index

Throughout December, the heat index is computed to be a fiery hot 36°C (96.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a composite of temperature and humidity figures to convey 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. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. 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 body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in December in Bombuwala, Sri Lanka, is 79%.

Rainfall

In Bombuwala, in December, during 16.5 rainfall days, 93mm (3.66") of precipitation is typically accumulated. Throughout the year, in Bombuwala, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Bombuwala.
On the first day of December in Bombuwala, Sri Lanka, sunrise is at 06:05 and sunset at 17:52. On the last day of the month, sunrise is at 06:20 and sunset at 18:05 +0530.

Sunshine

The average sunshine in December is 7.1h.

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Bombuwala. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, an average UV index of 7 transforms into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.