January weather forecast
Aggona, Sri Lanka

January is a tropical winter month in Aggona, Sri Lanka, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 23.1°C (73.6°F).

Temperature

The transition into January reveals an average high-temperature of a tropical 30.8°C (87.4°F), mirroring a close resemblance to December. Throughout January, Aggona's nights cool down to an average of 23.1°C (73.6°F).

Heat index

January's mean heat index is computed to be a very hot 38°C (100.4°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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 Aggona are January and February, with an average relative humidity of 74%.

Rainfall

The month with the least rainfall in Aggona, Sri Lanka, is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.

Daylight

In Aggona, the average length of the day in January is 11h and 46min.
On the first day of January in Aggona, sunrise is at 06:21 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 9.1h of sunshine.

UV index

The months with the highest UV index in Aggona, Sri Lanka, 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 exposure to the Sun's UV rays for the average person.
Note: In January, the UV index of 7 transforms into the following advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.