January weather forecast
Dandugama, Sri Lanka

January is a hot winter month in Dandugama, Sri Lanka, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 22.8°C (73°F).

Temperature

As Dandugama steps into January, the average high-temperature holds at a tropical 30.8°C (87.4°F), hinting at a minor fluctuation from the prior month. An average low-temperature of 22.8°C (73°F) is observed in Dandugama during the January nights.

Heat index

The heat index value for January is estimated at a torrid 38°C (100.4°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

January and February, with an average relative humidity of 73%, are the least humid months.

Rainfall

January is the month with the least rainfall in Dandugama. Rain falls for 9.7 days and accumulates 29mm (1.14") of precipitation.

Daylight

In Dandugama, the average length of the day in January is 11h and 46min.
On the first day of January, sunrise is at 06:22 and sunset at 18:05. On the last day of the month, sunrise is at 06:29 and sunset at 18:18 +0530.

Sunshine

The months with the most sunshine in Dandugama are January through April, with an average of 9.2h of sunshine.

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. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during January translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.