September weather forecast and climate
Vishamangalam, India

The last month of the rainy (monsoon) season, September, is another hot month in Vishamangalam, India, with average temperature ranging between min 22.4°C (72.3°F) and max 31.5°C (88.7°F).

Temperature

In September, the average high-temperature is practically the same as in August - a still tropical 31.5°C (88.7°F). In September, the average low-temperature is 22.4°C (72.3°F).

Heat index

The average heat index in September is appraised at a sweltering 39.3°C (102.7°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Vishamangalam, the average relative humidity in September is 71%.

Rainfall

In Vishamangalam, in September, it is raining for 21.3 days, with typically 106mm (4.17") of accumulated precipitation. In Vishamangalam, during the entire year, the rain falls for 160.7 days and collects up to 706mm (27.8") of precipitation.

Daylight

In September, the average length of the day in Vishamangalam, India, is 12.2h.

Sunshine

In September, the average sunshine is 8.7h.

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 unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Vishamangalam?

The average high-temperature, in September, in Vishamangalam, is 31.5°C (88.7°F), while the average low-temperature is 22.4°C (72.3°F). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is appraised at 39.3°C (102.7°F).

What is the average humidity in September in Vishamangalam?

In Vishamangalam, the average relative humidity in September is 71%.

How many days does it rain in September in Vishamangalam?

In September, in Vishamangalam, India, the rain falls for 21.3 days. Throughout September, 106mm (4.17") of precipitation is accumulated.

What is the average length of the day in September in Vishamangalam?

In September, the average length of the day is 12.2h.

How long on average sun shines in September in Vishamangalam?

In September, the average sunshine in Vishamangalam is 8.7h.

What is the UV index intensity in September in Vishamangalam?

In September, the average daily maximum UV index in Vishamangalam is 7. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.
Average temperature in September - Vishamangalam, India
  • Average high temperature in September: 31.5°C

The warmest months (with the highest average high temperature) are April and May (37.3°C).
The month with the lowest average high temperature is December (27.5°C).

  • Average low temperature in September: 22.4°C

The month with the highest average low temperature is May (26.2°C).
The coldest month (with the lowest average low temperature) is January (16.5°C).

Average pressure in September - Vishamangalam, India
  • Average pressure in September: 1008.2mbar

The month with the highest atmospheric pressure is January (1014.3mbar).
The month with the lowest atmospheric pressure is June (1006.1mbar).

Average wind speed in September - Vishamangalam, India
  • Average wind speed in September: 9.5km/h

The windiest month (with the highest average wind speed) is July (16.2km/h).
The calmest month (with the lowest average wind speed) is October (6.7km/h).

Average humidity in September - Vishamangalam, India
  • Average humidity in September: 71%

The month with the highest relative humidity is November (80%).
Months with the lowest relative humidity are April and May (50%).

Average rainfall in September - Vishamangalam, India
  • Average rainfall in September: 106mm

The wettest month (with the highest rainfall) is October (137mm).
The driest month (with the least rainfall) is January (5mm).

Average rainfall days in September - Vishamangalam, India
  • Average rainfall days in September: 21.3 days

The month with the highest number of rainy days is October (23.1 days).
The month with the least rainy days is February (3.6 days).

Average daylight in September / Average sunshine in September - Vishamangalam, India
  • Average daylight in September: 12.2h

Months with the longest days are June and July (Average daylight: 12.8h).
The month with the shortest days is December (Average daylight: 11.4h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is May (Average sunshine: 11.4h).
The month with the least sunshine is November (Average sunshine: 5.5h).

Average sunshine days in September - Vishamangalam, India
  • Average sunshine days in September: 7.1 days

The month with the most sunshine days is January (24.1 days).
Months with the least sunshine days are September and October (7.1 days).

Average UV index in September - Vishamangalam, India
  • Average UV index in September: 7

Months with the highest UV index are April and May (UV index 8).
Months with the lowest UV index are October and November (UV index 5).

Average cloud cover in September - Vishamangalam, India
  • Average cloud cover in September: 38

The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is March (Cloud cover 15).

Average visibility in September - Vishamangalam, India
  • Average visibility in September: 9km

Months with the highest visibility are February, March, April, May, June, July and August (10km).
Months with the lowest visibility are November and December (8km).