January weather forecast
Mandandawela, Sri Lanka

January, the same as December, is another warm winter month in Mandandawela, Sri Lanka, with temperature in the range of an average high of 29.3°C (84.7°F) and an average low of 19°C (66.2°F).

Temperature

January is marked by an average high-temperature of a still warm 29.3°C (84.7°F), almost identical to the preceding month. Mandandawela witnesses an average low-temperature of 19°C (66.2°F) throughout the month of January.

Heat index

The heat index in January is calculated to be a torrid 35°C (95°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in January in Mandandawela is 79%.

Rainfall

In Mandandawela, Sri Lanka, in January, during 14 rainfall days, 34mm (1.34") of precipitation is typically accumulated. Throughout the year, in Mandandawela, there are 217.7 rainfall days, and 1165mm (45.87") of precipitation is accumulated.

Daylight

In January, the average length of the day is 11h and 44min.
On the first day of January, sunrise is at 06:19 and sunset at 18:01. On the last day of the month, sunrise is at 06:26 and sunset at 18:14 +0530.

Sunshine

In Mandandawela, the average sunshine in January is 8.4h.

UV index

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In January, the maximum UV index of 6 suggests these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.