December weather forecast
Nonagama, Sri Lanka

The first month of the winter, December, is still a warm month in Nonagama, Sri Lanka, with an average temperature fluctuating between 24.5°C (76.1°F) and 29°C (84.2°F).

Temperature

December, having an average high-temperature of 29°C (84.2°F) and an average low-temperature of 24.5°C (76.1°F), is the coldest month.

Heat index

The heat index for December is computed to be a fiery hot 35°C (95°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their 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 children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The months with the highest humidity in Nonagama are November and December, with an average relative humidity of 79%.

Rainfall

In December, in Nonagama, the rain falls for 20.1 days. Throughout December, 131mm (5.16") of precipitation is accumulated. In Nonagama, during the entire year, the rain falls for 192.9 days and collects up to 942mm (37.09") of precipitation.

Daylight

The month with the shortest days in Nonagama is December, with an average of 11h and 48min of daylight.
On the first day of December in Nonagama, sunrise is at 06:01 and sunset at 17:49. On the last day of the month, sunrise is at 06:15 and sunset at 18:02 +0530.

Sunshine

December has the least sunshine of the year, with an average of 6.6h of sunshine.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high 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. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.