September weather forecastKottaiyur, India
September
Weather in September
The last month of the rainy (monsoon) season, September, is another hot month in Kottaiyur, India, with an average temperature fluctuating between 34.8°C (94.6°F) and 26.8°C (80.2°F).Temperature
The transition into September marks the average high-temperature at a still tropical 34.8°C (94.6°F), differing minimally from August's 34.9°C (94.8°F). Kottaiyur records an average temperature drop to a moderately hot 26.8°C (80.2°F) in September.Heat index
The heat index value for September is appraised at a blistering 44°C (111.2°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.In the scope of the heat index, its values resonate with shade and light wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
The average relative humidity in September in Kottaiyur is 59%.Rainfall
In Kottaiyur, India, during September, the rain falls for 18.1 days and regularly aggregates up to 58mm (2.28") of precipitation. Throughout the year, there are 175.5 rainfall days, and 646mm (25.43") of precipitation is accumulated.Daylight
In Kottaiyur, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 6:05 am and sunset at 6:24 pm. On the last day of September, in Kottaiyur, sunrise is at 6:03 am and sunset at 6:06 pm IST.
Sunshine
In Kottaiyur, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily UV index of 7 turns into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kottaiyur, India
- Average high temperature in September: 34.8°C
The warmest month (with the highest average high temperature) is May (37.5°C).
The month with the lowest average high temperature is December (29.5°C).
- Average low temperature in September: 26.8°C
The month with the highest average low temperature is May (28.9°C).
The coldest month (with the lowest average low temperature) is January (21.1°C).
Average pressure in September
Kottaiyur, India
- Average pressure in September: 1007.8mbar
The month with the highest atmospheric pressure is January (1012.9mbar).
The month with the lowest atmospheric pressure is June (1006.1mbar).
Average wind speed in September
Kottaiyur, India
- Average wind speed in September: 10.3km/h
The windiest months (with the highest average wind speed) are January and December (16.1km/h).
The calmest months (with the lowest average wind speed) are September and October (10.3km/h).
Average humidity in September
Kottaiyur, India
- Average humidity in September: 59%
The months with the highest relative humidity are November and December (76%).
The month with the lowest relative humidity is June (50%).
Average rainfall in September
Kottaiyur, India
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is October (154mm).
The driest month (with the least rainfall) is January (10mm).
Average rainfall days in September
Kottaiyur, India
- Average rainfall days in September: 18.1 days
The month with the highest number of rainy days is October (24.5 days).
The month with the least rainy days is February (6.1 days).
Average daylight in September /
Average sunshine in September
Kottaiyur, India
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is May (Average sunshine: 11h and 36min).
The month with the least sunshine is November (Average sunshine: 5h and 42min).
Average sunshine days in September
Kottaiyur, India
- Average sunshine days in September: 10 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is October (5.3 days).
Average UV index in September
Kottaiyur, India
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July and August (UV index 8).
The months with the lowest UV index are October, November and December (UV index 6).
Average cloud cover in September
Kottaiyur, India
- Average cloud cover in September: 35
The month with the most cloud cover is November (Cloud cover 43).
The month with the least cloud cover is March (Cloud cover 18).
Average visibility in September
Kottaiyur, 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).





