April weather forecast
Vallam, India

April, the same as March, is another sweltering pre-monsoon summer month in Vallam, India, with an average temperature fluctuating between 26.7°C (80.1°F) and 37.9°C (100.2°F).

Temperature

April's presence marks an average high-temperature of a still sweltering 37.9°C (100.2°F), subtly varied from March's 35.4°C (95.7°F). During April, the temperature tends to dip to an average of 26.7°C (80.1°F) at night.

Heat index

For most parts of April, the heat index is computed to be a blazing hot 54°C (129.2°F). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In Vallam, the average relative humidity in April is 59%.

Rainfall

In Vallam, India, during April, the rain falls for 9.3 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, there are 145 rainfall days, and 512mm (20.16") of precipitation is accumulated.

Daylight

In Vallam, the average length of the day in April is 12h and 22min.
On the first day of the month, sunrise is at 6:10 am and sunset at 6:24 pm. On the last day of April, sunrise is at 5:55 am and sunset at 6:26 pm IST.

Sunshine

In Vallam, India, the average sunshine in April is 10h.

UV index

The months with the highest UV index in Vallam are March through August, with an average maximum UV index of 8. A UV Index of 8 to 10 symbolizes a very high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 8 during April translates into the following recommendations:
Don't neglect protection; skin and eyes can be burned swiftly if left exposed. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.