September weather forecastTiruvallur, India
September
Weather in September
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tiruvallur, India
- Average high temperature in September: 34.2°C
The warmest month (with the highest average high temperature) is May (40.3°C).
The month with the lowest average high temperature is December (28.7°C).
- Average low temperature in September: 25.8°C
The month with the highest average low temperature is May (29.3°C).
The coldest months (with the lowest average low temperature) are January and February (20.3°C).
Average pressure in September
Tiruvallur, India
- Average pressure in September: 1006.8mbar
The month with the highest atmospheric pressure is January (1013.8mbar).
The month with the lowest atmospheric pressure is June (1004.3mbar).
Average wind speed in September
Tiruvallur, India
- Average wind speed in September: 9.7km/h
The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is October (9km/h).
Average humidity in September
Tiruvallur, India
- Average humidity in September: 66%
The months with the highest relative humidity are November and December (77%).
The month with the lowest relative humidity is June (50%).
Average rainfall in September
Tiruvallur, India
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is November (134mm).
The driest month (with the least rainfall) is February (6mm).
Average rainfall days in September
Tiruvallur, India
- Average rainfall days in September: 22 days
The month with the highest number of rainy days is September (22 days).
The month with the least rainy days is February (3.6 days).
Average daylight in September /
Average sunshine in September
Tiruvallur, India
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 9h and 54min
The month with the most sunshine is May (Average sunshine: 11h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 0min).
Average sunshine days in September
Tiruvallur, India
- Average sunshine days in September: 6 days
The month with the most sunshine days is March (25.6 days).
The month with the least sunshine days is September (6 days).
Average UV index in September
Tiruvallur, India
- Average UV index in September: 7
The months with the highest UV index are April, May, June and July (UV index 8).
The months with the lowest UV index are January, October, November and December (UV index 6).
Average cloud cover in September
Tiruvallur, India
- Average cloud cover in September: 39
The month with the most cloud cover is August (Cloud cover 42).
The month with the least cloud cover is April (Cloud cover 14).
Average visibility in September
Tiruvallur, India
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
