September weather forecast
Appananallur, India

September

Weather in September

September, the last month of the rainy (monsoon) season in Appananallur, is also a hot month, with temperature in the range of an average low of 24.4°C (75.9°F) and an average high of 34.2°C (93.6°F).

Temperature

A minor adjustment in Appananallur's average high-temperature is noted with the start of September, touching a still hot 34.2°C (93.6°F) from August's 33.9°C (93°F). An average low-temperature of 24.4°C (75.9°F) is expected in Appananallur during September.

Heat index

In September, the average heat index is appraised at a scorching 44°C (111.2°F). Keep wary: Heat cramps along with heat exhaustion are expected. Heatstroke is a possible outcome of ongoing activity.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In September, the average relative humidity is 63%.

Rainfall

In Appananallur, in September, during 21.7 rainfall days, 75mm (2.95") of precipitation is typically accumulated. Throughout the year, there are 180.4 rainfall days, and 698mm (27.48") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September, sunrise is at 6:06 am and sunset at 6:26 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:07 pm IST.

Sunshine

The average sunshine in September is 9h.

UV index

In Appananallur, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

How hot does it get in Appananallur in September?
Appananallur in September has an average high-temperature of 34.2°C (93.6°F) and an average low-temperature of 24.4°C (75.9°F). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is appraised at 44°C (111.2°F).
What is the average humidity in September in Appananallur?
In September, the average relative humidity in Appananallur is 63%.
How many days does it rain in September in Appananallur?
In Appananallur, in September, during 21.7 rainfall days, 75mm (2.95") of precipitation is typically accumulated.
What is the average length of the day in September in Appananallur?
In Appananallur, India, the average day length in September is 12h and 11min.
When are sunrise and sunset in September in Appananallur?
In September, on the first day of the month, sunrise is at 6:06 am and sunset at 6:26 pm. On the last day of the month, in Appananallur, sunrise is at 6:05 am and sunset at 6:07 pm IST.
How long on average sun shines in September in Appananallur?
In Appananallur, the average sunshine duration in September is 9h.
What is the UV index reading in September in Appananallur?
In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Appananallur, India
  • Average high temperature in September: 34.2°C

The warmest months (with the highest average high temperature) are April and May (37.8°C).
The month with the lowest average high temperature is December (29.2°C).

  • Average low temperature in September: 24.4°C

The month with the highest average low temperature is May (27.2°C).
The coldest month (with the lowest average low temperature) is January (19.4°C).

Average pressure in September
Appananallur, India
  • Average pressure in September: 1008.5mbar

The month with the highest atmospheric pressure is January (1013.8mbar).
The month with the lowest atmospheric pressure is June (1006.9mbar).

Average wind speed in September
Appananallur, India
  • Average wind speed in September: 10.7km/h

The windiest months (with the highest average wind speed) are June and July (15.7km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).

Average humidity in September
Appananallur, India
  • Average humidity in September: 63%

The month with the highest relative humidity is November (78%).
The month with the lowest relative humidity is April (49%).

Average rainfall in September
Appananallur, India
  • Average rainfall in September: 75mm

The wettest month (with the highest rainfall) is October (175mm).
The driest month (with the least rainfall) is January (6mm).

Average rainfall days in September
Appananallur, India
  • Average rainfall days in September: 21.7 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is February (3.6 days).

Average daylight in September /
Average sunshine in September
Appananallur, India
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is May (Average sunshine: 11h and 42min).
The month with the least sunshine is November (Average sunshine: 5h and 54min).

Average sunshine days in September
Appananallur, India
  • Average sunshine days in September: 6.8 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is August (5.7 days).

Average UV index in September
Appananallur, India
  • Average UV index in September: 7

The months with the highest UV index are March, April and May (UV index 8).
The months with the lowest UV index are January, October, November and December (UV index 6).

Average cloud cover in September
Appananallur, India
  • Average cloud cover in September: 35

The month with the most cloud cover is November (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 12).

Average visibility in September
Appananallur, India
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).

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