December weather forecast
Pallimulla, Sri Lanka

December, the first month of the winter in Pallimulla, 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

Pallimulla experiences a recorded average high-temperature of a still moderately hot 29.7°C (85.5°F) in December, closely aligned with November's 29.8°C (85.6°F). In December, Pallimulla reports a consistent average low-temperature of 24.4°C (75.9°F) during the nights.

Heat index

In December, the average heat index is computed to be a sweltering 36°C (96.8°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Given the heat index, its values are aligned with shaded sites and gentle winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in December is 79%.

Rainfall

In Pallimulla, in December, it is raining for 16.5 days, with typically 93mm (3.66") of accumulated precipitation. In Pallimulla, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Daylight

The month with the shortest days in Pallimulla is December, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 06:06 and sunset at 17:52. 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 7.1h.

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Pallimulla, Sri Lanka. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a regular UV index of 7 translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.