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
The commencement of September notes an average high-temperature of a still hot 32.9°C (91.2°F), exhibiting little difference from the previous month. Throughout September, the temperature falls to an average low of 26.9°C (80.4°F).Heat index
The heat index value during September is appraised at an extremely hot 43°C (109.4°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.One should consider that heat index numbers are for shaded settings and light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
The average relative humidity in September is 70%.Rainfall
In Nandambakkam, in September, it is raining for 25 days, with typically 104mm (4.09") of accumulated precipitation. Throughout the year, in Nandambakkam, there are 169.2 rainfall days, and 825mm (32.48") of precipitation is accumulated.Daylight
In September, the average length of the day in Nandambakkam 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, in Nandambakkam, sunrise is at 5:58 am and sunset at 5:59 pm IST.
Sunshine
The average sunshine in September in Nandambakkam, India, is 10.5h.UV index
In Nandambakkam, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 7 in September transforms into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
How hot is it in Nandambakkam in September?
What is the average humidity in September in Nandambakkam?
How much does it rain in Nandambakkam in September?
What is the average length of the day in September in Nandambakkam?
When is the sunrise / sunset in September in Nandambakkam?
How many hours of sunshine does Nandambakkam have in September?
What is the UV index intensity in September in Nandambakkam?
Average temperature in September
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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
Nandambakkam, 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).
Nandambakkam, India
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