December weather forecast
Polgasowita, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Polgasowita, Sri Lanka, with temperature in the range of an average low of 24.4°C (75.9°F) and an average high of 29.7°C (85.5°F).

Temperature

As Polgasowita welcomes December, the average high-temperature is noted at a still warm 29.7°C (85.5°F), closely aligning with the preceding month. Polgasowita cools down to an average low-temperature of 24.4°C (75.9°F) throughout the month of December.

Heat index

In December, the average heat index is estimated at a fiery hot 36°C (96.8°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

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

Rainfall

In Polgasowita, during December, the rain falls for 16.5 days and regularly aggregates up to 93mm (3.66") of precipitation. Throughout the year, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

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

Sunshine

In December, the average sunshine in Polgasowita is 7.1h.

UV index

The months with the highest UV index are January through April, July, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 7 suggests this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.