January weather forecast
Bamunumulla, Sri Lanka

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

Temperature

January brings an average high-temperature of a hot 30.3°C (86.5°F), showing a slight difference from December's 29.7°C (85.5°F). During the month of January, Bamunumulla's nighttime temperature lowers to an average of 23.4°C (74.1°F).

Heat index

The heat index value for January is estimated at a sweltering 37°C (98.6°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

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

Rainfall

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

Daylight

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

Sunshine

The month with the most sunshine is January, with an average of 9.2h of sunshine.

UV index

The months with the highest UV index are January through April, July, September through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 during January translates into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.