September weather forecast and climate
Undi, India

The last month of the rainy (monsoon) season, September, is another hot month in Undi, India, with average temperature varying between 32°C (89.6°F) and 25.3°C (77.5°F).

Temperature

In Undi, the average high-temperature is practically the same as in August - a still hot 32°C (89.6°F). The average low-temperature, is 25.3°C (77.5°F).

Heat index

In September, the average heat index is appraised at a scorching 43.9°C (111°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged 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 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like differences in body mass, height, and shape, metabolic differences, wind, and activity influence one's weather impression. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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

With an average relative humidity of 79%, September is the most humid month.

Rainfall

In Undi, it is raining for 21.6 days, with typically 105mm (4.13") of accumulated precipitation. In Undi, during the entire year, the rain falls for 137.8 days and collects up to 693mm (27.28") of precipitation.

Daylight

The average length of the day in Undi is 12.2h.

Sunshine

The average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index in Undi is 7. A UV Index reading of 6 to 7 represents a high threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Undi?

The average high-temperature, in September, in Undi, India, is 32°C (89.6°F), while the average low-temperature is 25.3°C (77.5°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that factores the actual air temperature with the relative humidity, is estimated at 43.9°C (111°F).

What is the most humid month in Undi?

September is the most humid month, with an average relative humidity of 79%.

What is the average humidity in September in Undi?

In Undi, India, the average relative humidity in September is 79%.

How much does it rain in Undi in September?

In Undi, in September, it is raining for 21.6 days, with typically 105mm (4.13") of accumulated precipitation.

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

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

How many hours of sunshine does Undi have in September?

The average sunshine in September in Undi, India, is 9.2h.

How high is the UV index in September in Undi?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Undi, India
  • Average high temperature in September: 32°C

The warmest month (with the highest average high temperature) is May (38.9°C).
The month with the lowest average high temperature is January (29.7°C).

  • Average low temperature in September: 25.3°C

The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (18.8°C).

Average pressure in September - Undi, India
  • Average pressure in September: 1005.5mbar

The month with the highest atmospheric pressure is January (1014.4mbar).
The month with the lowest atmospheric pressure is June (1002.2mbar).

Average wind speed in September - Undi, India
  • Average wind speed in September: 10.1km/h

The windiest month (with the highest average wind speed) is June (14.2km/h).
The calmest month (with the lowest average wind speed) is October (9.1km/h).

Average humidity in September - Undi, India
  • Average humidity in September: 79%

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is June (60%).

Average rainfall in September - Undi, India
  • Average rainfall in September: 105mm

The wettest month (with the highest rainfall) is August (161mm).
The driest months (with the least rainfall) are February and March (4mm).

Average rainfall days in September - Undi, India
  • Average rainfall days in September: 21.6 days

The month with the highest number of rainy days is August (22.8 days).
The month with the least rainy days is February (2.4 days).

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

The month with the longest days is June (Average daylight: 13.1h).
The month with the shortest days is December (Average daylight: 11.2h).

  • Average sunshine in September: 9.2h

Months with the most sunshine are April and May (Average sunshine: 11.8h).
The month with the least sunshine is November (Average sunshine: 6.7h).

Average sunshine days in September - Undi, India
  • Average sunshine days in September: 6.4 days

The month with the most sunshine days is March (26.9 days).
The month with the least sunshine days is September (6.4 days).

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

Months with the highest UV index are April, May and June (UV index 8).
Months with the lowest UV index are January and December (UV index 6).

Average cloud cover in September - Undi, India
  • Average cloud cover in September: 41

The month with the most cloud cover is July (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 11).

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

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