Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Vandalur, India, experiences a minor change to a still hot 32.9°C (91.2°F) in average high-temperature during September, closely reflecting August. Vandalur records a mean low-temperature of 26.9°C (80.4°F) in September.Heat index
September's heat index 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.Records show heat index calculations are tailored for shaded regions and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
In September, the average relative humidity in Vandalur is 70%.Rainfall
In Vandalur, in September, it is raining for 25 days, with typically 104mm (4.09") of accumulated precipitation. Throughout the year, in Vandalur, there are 169.2 rainfall days, and 825mm (32.48") of precipitation is accumulated.Daylight
In Vandalur, 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 6:00 pm IST.
Sunshine
The average sunshine in September in Vandalur is 10.5h.UV index
In September, the average daily maximum UV index in Vandalur is 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
How hot is it in Vandalur in September?
What is the average humidity in September in Vandalur?
How many days does it rain in September in Vandalur?
What is the average length of the day in September in Vandalur?
When are sunrise and sunset in September in Vandalur?
How long on average sun shines in September in Vandalur?
How high is the UV index in September in Vandalur?
Average temperature in September
Vandalur, India
- Average high temperature in September: 32.9°C
The warmest month (with the highest average high temperature) is May (36.8°C).
The month with the lowest average high temperature is December (27.9°C).
- Average low temperature in September: 26.9°C
The month with the highest average low temperature is May (29.4°C).
The coldest month (with the lowest average low temperature) is January (22.6°C).
Average pressure in September
Vandalur, India
- Average pressure in September: 1006.8mbar
The month with the highest atmospheric pressure is January (1013.6mbar).
The month with the lowest atmospheric pressure is June (1004.2mbar).
Average wind speed in September
Vandalur, India
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is May (17.3km/h).
The calmest month (with the lowest average wind speed) is October (11.6km/h).
Average humidity in September
Vandalur, India
- Average humidity in September: 70%
The months with the highest relative humidity are November and December (76%).
The month with the lowest relative humidity is June (58%).
Average rainfall in September
Vandalur, India
- Average rainfall in September: 104mm
The wettest month (with the highest rainfall) is November (191mm).
The driest month (with the least rainfall) is February (6mm).
Average rainfall days in September
Vandalur, India
- Average rainfall days in September: 25 days
The month with the highest number of rainy days is September (25 days).
The month with the least rainy days is February (3.4 days).
Average daylight in September /
Average sunshine in September
Vandalur, India
- Average daylight in September: 12h and 1min
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: 10h and 3min
The month with the most sunshine is May (Average sunshine: 11h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 12min).
Average sunshine days in September
Vandalur, India
- Average sunshine days in September: 3.5 days
The month with the most sunshine days is March (25.8 days).
The month with the least sunshine days is September (3.5 days).
Average UV index in September
Vandalur, 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, November and December (UV index 6).
Average cloud cover in September
Vandalur, India
- Average cloud cover in September: 38
The month with the most cloud cover is August (Cloud cover 42).
The months with the least cloud cover are March and April (Cloud cover 13).
Average visibility in September
Vandalur, India
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Vandalur, India
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