December weather forecast
Brahmanagama, Sri Lanka

December, the first month of the winter in Brahmanagama, is also a moderately hot month, with temperature in the range of an average low of 24.1°C (75.4°F) and an average high of 29.7°C (85.5°F).

Temperature

Brahmanagama's weather in December displays an average high-temperature of a warm 29.7°C (85.5°F), showing minor disparity from November's 30°C (86°F). In Brahmanagama, in December, the average low-temperature is a still moderately hot 24.1°C (75.4°F).

Heat index

For most parts of December, the heat index is calculated to be a fiery hot 36°C (96.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Brahmanagama, the average relative humidity in December is 79%.

Rainfall

In Brahmanagama, during December, the rain falls for 19.9 days and regularly aggregates up to 124mm (4.88") of precipitation. Throughout the year, in Brahmanagama, there are 272.3 rainfall days, and 2039mm (80.28") of precipitation is accumulated.

Daylight

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

Sunshine

In Brahmanagama, the average sunshine in December is 7h.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 7 in December transforms into this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.