January weather forecast
Walpita, Sri Lanka

January is a tropical winter month in Walpita, 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

December's transformation into January witnesses an average high-temperature of a tropical 30.3°C (86.5°F), noting a minor change from the preceding month. In the month of January, Walpita experiences an average low-temperature of 23.4°C (74.1°F).

Heat index

The heat index value during January is evaluated at a sweltering 37°C (98.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

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 Walpita. Rain falls for 8.9 days and accumulates 25mm (0.98") of precipitation.

Daylight

In January, the average length of the day 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, sunrise is at 06:27 and sunset at 18:18 +0530.

Sunshine

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

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Walpita. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a regular UV index of 7 translates into these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.