December weather forecast
Pamunuwa, Sri Lanka

The first month of the winter, December, is also a moderately hot month in Pamunuwa, Sri Lanka, with an average temperature varying between 29.9°C (85.8°F) and 23.7°C (74.7°F).

Temperature

The average high-temperature during December registers at a warm 29.9°C (85.8°F), closely corresponding to the preceding month. Pamunuwa's average low-temperature during December nights is observed to be 23.7°C (74.7°F).

Heat index

The heat index in December is appraised at a very hot 37°C (98.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. 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. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Pamunuwa, Sri Lanka, the average relative humidity in December is 79%.

Rainfall

In Pamunuwa, in December, it is raining for 21.1 days, with typically 148mm (5.83") of accumulated precipitation. Throughout the year, in Pamunuwa, 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 in Pamunuwa.
On the first day of the month, sunrise is at 06:06 and sunset at 17:52. On the last day of December, in Pamunuwa, sunrise is at 06:21 and sunset at 18:05 +0530.

Sunshine

In December, the average sunshine in Pamunuwa is 6.9h.

UV index

The months with the highest UV index in Pamunuwa are January through April, July, September, November and 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 ordinary individuals.
Note: The maximum daily UV index of 7 during December translates into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.