January weather forecast
Ariyalur, India

January, like December, in Ariyalur, India, is a moderately hot winter month, with temperature in the range of an average low of 20.7°C (69.3°F) and an average high of 29.3°C (84.7°F).

Temperature

Ariyalur observes a minor difference in average high-temperatures between December's 28.9°C (84°F) and January's 29.3°C (84.7°F). In January, in Ariyalur, India, the average low-temperature is a pleasant 20.7°C (69.3°F).

Heat index

For most parts of January, the heat index is calculated to be a very hot 35°C (95°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in January in Ariyalur is 78%.

Rainfall

In Ariyalur, in January, during 8 rainfall days, 11mm (0.43") of precipitation is typically accumulated. In Ariyalur, during the entire year, the rain falls for 178.4 days and collects up to 608mm (23.94") of precipitation.

Daylight

In Ariyalur, the average length of the day in January is 11h and 34min.
On the first day of January, sunrise is at 6:32 am and sunset at 6:01 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:16 pm IST.

Sunshine

In Ariyalur, India, the average sunshine in January is 9h.

UV index

January, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: During January, 6 as the daily maximum UV index converts into the following advice:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.