January weather forecast
Gehenuwala, Sri Lanka

January in Gehenuwala, Sri Lanka, is a tropical winter month, with an average temperature fluctuating between 23.1°C (73.6°F) and 30.8°C (87.4°F).

Temperature

January's advent denotes a minor fluctuation in the average high-temperature to a hot 30.8°C (87.4°F) from December's 29.9°C (85.8°F). Gehenuwala's average low-temperature in January is measured at a warm 23.1°C (73.6°F).

Heat index

The average heat index in January is calculated to be a torrid 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index data is primarily for areas with shade and subjected to light winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The months with the lowest humidity in Gehenuwala, Sri Lanka, are January and February, with an average relative humidity of 74%.

Rainfall

January is the month with the least rainfall. Rain falls for 11.6 days and accumulates 40mm (1.57") of precipitation.

Daylight

The average length of the day in January in Gehenuwala is 11h and 47min.
On the first day of the month, sunrise is at 06:20 and sunset at 18:05. On the last day of January, in Gehenuwala, Sri Lanka, sunrise is at 06:28 and sunset at 18:18 +0530.

Sunshine

With an average of 9.1h of sunshine, January has the most sunshine of the year in Gehenuwala.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, a daily UV index of 7 turns into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. 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. Boost your sun resistance with garments that are densely woven yet spacious.