September weather forecast
Tiruvallur, India

The last month of the rainy (monsoon) season, September, is also a hot month in Tiruvallur, India, with temperature in the range of an average high of 34.2°C (93.6°F) and an average low of 25.8°C (78.4°F).

Temperature

Tiruvallur, India, experiences an average high-temperature of a hot 34.2°C (93.6°F) in September, marking an insignificant shift from 35.1°C (95.2°F) in August. Tiruvallur experiences an average temperature drop to a warm 25.8°C (78.4°F) during September nights.

Heat index

The heat index value for September is computed to be a blazing hot 45°C (113°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly 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.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In September, the average relative humidity is 66%.

Rainfall

In Tiruvallur, in September, it is raining for 22 days, with typically 72mm (2.83") of accumulated precipitation. In Tiruvallur, during the entire year, the rain falls for 153.5 days and collects up to 602mm (23.7") of precipitation.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of September in Tiruvallur, sunrise is at 5:59 am and sunset at 6:21 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 6:00 pm IST.

Sunshine

In September, the average sunshine in Tiruvallur is 9.9h.

UV index

The average daily maximum UV index in September in Tiruvallur is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.