December weather forecast
Karur, India

The first month of the winter, December, is still a warm month in Karur, India, with an average temperature varying between 20.9°C (69.6°F) and 29.5°C (85.1°F).

Temperature

December, known for its average high temperature of 29.5°C (85.1°F) and an average low temperature of 20.9°C (69.6°F), is the coldest month.

Heat index

The heat index for December is estimated at a fiery hot 35°C (95°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. 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 particularly relevant to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In Karur, the average relative humidity in December is 74%.

Rainfall

In Karur, during December, the rain falls for 11.3 days and regularly aggregates up to 34mm (1.34") of precipitation. In Karur, during the entire year, the rain falls for 156 days and collects up to 560mm (22.05") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 30min of daylight.
On the first day of the month, sunrise is at 6:20 am and sunset at 5:52 pm. On the last day of December, sunrise is at 6:35 am and sunset at 6:05 pm IST.

Sunshine

In Karur, the average sunshine in December is 6.6h.

UV index

October through December, with an average maximum UV index of 6, are months with the lowest UV index in Karur. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a daily UV index of 6 turns into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.