September weather forecastAnna Nagar, India
September
Weather in September
September, the last month of the rainy (monsoon) season in Anna Nagar, is another tropical month, with an average temperature varying between 32.9°C (91.2°F) and 26.9°C (80.4°F).Temperature
As August turns into September, the average high-temperatures rest at a still tropical 32.9°C (91.2°F), showing a minor variation from the prior month. During September, an average low-temperature of 26.9°C (80.4°F) is observed.Heat index
September's mean heat index is estimated at a blistering 43°C (109.4°F). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
In Anna Nagar, India, the average relative humidity in September is 69%.Rainfall
In September, in Anna Nagar, the rain falls for 23.9 days. Throughout September, 92mm (3.62") of precipitation is accumulated. Throughout the year, there are 154.8 rainfall days, and 735mm (28.94") of precipitation is accumulated.Daylight
In September, the average length of the day in Anna Nagar, India, is 12h and 12min.On the first day of September in Anna Nagar, India, sunrise is at 5:58 am and sunset at 6:20 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 5:59 pm IST.
Sunshine
The average sunshine in September in Anna Nagar is 10.6h.UV index
In Anna Nagar, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 7 suggests this advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Anna Nagar, India
- Average high temperature in September: 32.9°C
The warmest month (with the highest average high temperature) is May (37.2°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 (29.5°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).
Average pressure in September
Anna Nagar, India
- Average pressure in September: 1006.7mbar
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
Anna Nagar, India
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is May (16.8km/h).
The calmest month (with the lowest average wind speed) is October (11.3km/h).
Average humidity in September
Anna Nagar, India
- Average humidity in September: 69%
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
Anna Nagar, India
- Average rainfall in September: 92mm
The wettest month (with the highest rainfall) is November (185mm).
The driest month (with the least rainfall) is February (6mm).
Average rainfall days in September
Anna Nagar, India
- Average rainfall days in September: 23.9 days
The month with the highest number of rainy days is September (23.9 days).
The month with the least rainy days is February (3.4 days).
Average daylight in September /
Average sunshine in September
Anna Nagar, 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: 10h and 36min
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
Anna Nagar, India
- Average sunshine days in September: 5.5 days
The month with the most sunshine days is March (25.7 days).
The month with the least sunshine days is September (5.5 days).
Average UV index in September
Anna Nagar, 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
Anna Nagar, India
- Average cloud cover in September: 37
The month with the most cloud cover is August (Cloud cover 41).
The months with the least cloud cover are March and April (Cloud cover 13).
Average visibility in September
Anna Nagar, 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).
