December weather forecast
Uduwana, Sri Lanka

The first month of the winter, December, is still a warm month in Uduwana, Sri Lanka, 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

During December, Uduwana records an average high-temperature of a moderately hot 29.7°C (85.5°F), marking a slight divergence from November's 30°C (86°F). During December, Uduwana's temperature falls to a steady low-temperature average of 24.1°C (75.4°F).

Heat index

In December, the heat index is calculated to be a torrid 36°C (96.8°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

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

Rainfall

In Uduwana, Sri Lanka, in December, it is raining for 19.9 days, with typically 124mm (4.88") of accumulated precipitation. Throughout the year, there are 272.3 rainfall days, and 2039mm (80.28") of precipitation is accumulated.

Daylight

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

Sunshine

In December, the average sunshine is 7h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Uduwana. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.