April weather forecast
Vallam, India

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

Temperature

The average high-temperature during April registers at a still very hot 37.9°C (100.2°F), closely corresponding to the preceding month. Throughout April, Vallam records an average temperature of 26.7°C (80.1°F) at night.

Heat index

The heat index value during April is calculated to be a life-threatening hot 54°C (129.2°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
One should consider that heat index numbers are for shaded settings and light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

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

Rainfall

In Vallam, India, in April, it is raining for 9.3 days, with typically 25mm (0.98") of accumulated precipitation. In Vallam, during the entire year, the rain falls for 145 days and collects up to 512mm (20.16") of precipitation.

Daylight

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

Sunshine

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

UV index

March through August, with an average maximum UV index of 8, are months with the highest UV index. A UV Index reading of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 8 during April leads to these instructions:
Ensure safety measures are in place, as skin and eyes are vulnerable to quick damage. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.