September weather forecastNandalur, India

Weather in September

September, the last month of the rainy (monsoon) season in Nandalur, is another tropical month, with an average temperature varying between 33°C (91.4°F) and 24.5°C (76.1°F).

Temperature

The arrival of September sees a recorded average high-temperature of a still hot 33°C (91.4°F), showing little divergence from the previous month's conditions. Nandalur registers a consistent average low-temperature of 24.5°C (76.1°F) during September.

Heat index

September's average heat index is computed to be a blisteringly hot 41°C (105.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In September, the average relative humidity is 64%.

Rainfall

In Nandalur, during September, the rain falls for 16.7 days and regularly aggregates up to 54mm (2.13") of precipitation. Throughout the year, there are 121.2 rainfall days, and 413mm (16.26") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September, sunrise is at 6:01 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 6:03 pm IST.

Sunshine

In Nandalur, the average sunshine in September is 8.2h.

UV index

The average daily maximum UV index in September in Nandalur is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.