September weather forecast
Rajakilpakkam, India

The last month of the rainy (monsoon) season, September, is also a hot month in Rajakilpakkam, India, with temperature in the range of an average low of 26.9°C (80.4°F) and an average high of 32.9°C (91.2°F).

Temperature

Rajakilpakkam marks the onset of September with an average high-temperature of a still hot 32.9°C (91.2°F), a subtle shift from August's 33.5°C (92.3°F). In Rajakilpakkam, the expected average low-temperature for September is a moderately hot 26.9°C (80.4°F).

Heat index

The heat index for September is appraised at an extremely hot 43°C (109.4°F). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 particularly important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in September is 70%.

Rainfall

In Rajakilpakkam, during September, the rain falls for 25 days and regularly aggregates up to 104mm (4.09") of precipitation. Throughout the year, there are 169.2 rainfall days, and 825mm (32.48") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 5:58 am and sunset at 6:20 pm. On the last day of September, sunrise is at 5:58 am and sunset at 5:59 pm IST.

Sunshine

The average sunshine in September is 10.5h.

UV index

The average daily maximum UV index in September in Rajakilpakkam, India, is 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.