December weather forecast
Aluthgama, Sri Lanka

December, the first month of the winter in Aluthgama, is still a warm month, with temperature in the range of an average high of 29.7°C (85.5°F) and an average low of 24.4°C (75.9°F).

Temperature

Aluthgama's shift into December sets the average high-temperature at a still warm 29.7°C (85.5°F), a figure that deviates only slightly from November's 29.8°C (85.6°F). In December, Aluthgama records an average nighttime temperature of 24.4°C (75.9°F).

Heat index

The heat index in December is calculated to be a torrid 36°C (96.8°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
The standards for the heat index are set for locations in shade and under light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

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

Rainfall

In December, in Aluthgama, Sri Lanka, the rain falls for 16.5 days. Throughout December, 93mm (3.66") of precipitation is accumulated. In Aluthgama, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year.
On the first day of December in Aluthgama, 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

In Aluthgama, Sri Lanka, the average sunshine in December is 7.1h.

UV index

The months with the highest UV index in Aluthgama are January through April, July, September through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, an average UV index of 7 transforms into the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.