January weather forecast
Vallam, India

January, like December, in Vallam, India, is another warm winter month, with an average temperature ranging between max 29.8°C (85.6°F) and min 20.1°C (68.2°F).

Temperature

An average high-temperature of a still warm 29.8°C (85.6°F) marks January, exhibiting a close resemblance to the conditions in December. Vallam's nighttime temperature in January falls to an average of 20.1°C (68.2°F).

Heat index

Throughout January, the heat index is calculated to be a sweltering 36°C (96.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in January is 76%.

Rainfall

In Vallam, during January, the rain falls for 8 days and regularly aggregates up to 12mm (0.47") of precipitation. Throughout the year, there are 145 rainfall days, and 512mm (20.16") of precipitation is accumulated.

Daylight

The average length of the day in January is 11h and 35min.
On the first day of January, sunrise is at 6:31 am and sunset at 6:02 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:16 pm IST.

Sunshine

In January, the average sunshine is 9h.

UV index

The months with the lowest UV index are January, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the UV index of 6 transforms into the following advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.