September weather forecastPoonamallee, India
September
Weather in September
September, the last month of the rainy (monsoon) season in Poonamallee, is another tropical month, with an average temperature ranging between max 32.9°C (91.2°F) and min 26.9°C (80.4°F).Temperature
Poonamallee's weather in September indicates an average high-temperature of a still hot 32.9°C (91.2°F), nearly consistent with the 33.5°C (92.3°F) of August. Poonamallee sees an average low-temperature of 26.9°C (80.4°F) during September.Heat index
The heat index for September is appraised at a blistering 43°C (109.4°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.Take note of the fact that heat index values are based on shaded circumstances with light airflows. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
In September, the average relative humidity in Poonamallee is 69%.Rainfall
In Poonamallee, in September, during 23.9 rainfall days, 92mm (3.62") of precipitation is typically accumulated. In Poonamallee, during the entire year, the rain falls for 154.8 days and collects up to 735mm (28.94") of precipitation.Daylight
In September, the average length of the day in Poonamallee 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 Poonamallee, sunrise is at 5:58 am and sunset at 6:00 pm IST.
Sunshine
In September, the average sunshine is 10.6h.UV index
In Poonamallee, India, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 7 in September translates into these instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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
Poonamallee, 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).
