January weather forecast
Aluthgama, Sri Lanka

January is a tropical winter month in Aluthgama, Sri Lanka, with temperature in the range of an average low of 23.4°C (74.1°F) and an average high of 30.3°C (86.5°F).

Temperature

Aluthgama notes an average high-temperature of a hot 30.3°C (86.5°F) in January, hardly diverging from December. During the nights in January, the temperature in Aluthgama averages to a warm 23.4°C (74.1°F).

Heat index

In January, the heat index is calculated to be a fiery hot 37°C (98.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The months with the lowest humidity in Aluthgama are January and February, with an average relative humidity of 75%.

Rainfall

January is the month with the least rainfall. Rain falls for 8.9 days and accumulates 25mm (0.98") of precipitation.

Daylight

In Aluthgama, the average length of the day in January is 11h and 48min.
On the first day of the month, sunrise is at 06:20 and sunset at 18:05. On the last day of January, in Aluthgama, sunrise is at 06:27 and sunset at 18:18 +0530.

Sunshine

January has the most sunshine of the year, with an average of 9.2h of sunshine.

UV index

The months with the highest UV index in Aluthgama, Sri Lanka, are January through April, July, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 7 during January translates into the following directions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.