January weather forecast
Rakwana, Sri Lanka

January, like December, in Rakwana, Sri Lanka, is a moderately hot winter month, with an average temperature varying between 18.8°C (65.8°F) and 29.3°C (84.7°F).

Temperature

The initiation of January sees an average high-temperature of a still warm 29.3°C (84.7°F), showing minor variations from the previous month. During the month of January, an average low-temperature of 18.8°C (65.8°F) is recorded.

Heat index

Throughout January, the heat index is computed to be a very hot 36°C (96.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The months with the lowest humidity are January and February, with an average relative humidity of 80%.

Rainfall

The month with the least rainfall in Rakwana is January, when the rain falls for 18.9 days and typically collects 85mm (3.35") of precipitation.

Daylight

In Rakwana, the average length of the day in January is 11h and 48min.
On the first day of the month, sunrise is at 06:18 and sunset at 18:03. On the last day of January, sunrise is at 06:25 and sunset at 18:16 +0530.

Sunshine

In Rakwana, the average sunshine in January is 8.3h.

UV index

The months with the highest UV index are January through August, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 in January interprets into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.