September weather forecast and climate
Ranchi, India

The last month of the rainy (monsoon) season, September, is another warm month in Ranchi, India, with average temperature fluctuating between 29.5°C (85.1°F) and 22.5°C (72.5°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 29.5°C (85.1°F). The average low-temperature, in September, is 22.5°C (72.5°F).

Heat index

In September, the average heat index is appraised at a very hot 36.9°C (98.4°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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, pregnancy, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity in Ranchi is 83%.

Rainfall

In Ranchi, during September, the rain falls for 20.9 days and regularly aggregates up to 139mm (5.47") of precipitation. Throughout the year, there are 125.5 rainfall days, and 836mm (32.91") of precipitation is accumulated.

Daylight

In Ranchi, the average length of the day is 12.3h.

Sunshine

The average sunshine in Ranchi is 7.5h.

UV index

In Ranchi, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 Ranchi?

In Ranchi, in September, the average high-temperature is 29.5°C (85.1°F), and the average low-temperature is 22.5°C (72.5°F). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that factores the actual air temperature with the relative humidity, is estimated at 36.9°C (98.4°F).

What is the average humidity in September in Ranchi?

The average relative humidity in September is 83%.

How many days does it rain in September in Ranchi?

In Ranchi, India, in September, during 20.9 rainfall days, 139mm (5.47") of precipitation is typically accumulated.

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

In September, the average length of the day in Ranchi is 12.3h.

How long on average sun shines in September in Ranchi?

In Ranchi, the average sunshine in September is 7.5h.

What is the UV index reading in September in Ranchi?

In Ranchi, India, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Ranchi, India
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is May (38.8°C).
The month with the lowest average high temperature is December (23.5°C).

  • Average low temperature in September: 22.5°C

The month with the highest average low temperature is June (26.9°C).
The coldest month (with the lowest average low temperature) is January (11.4°C).

Average pressure in September - Ranchi, India
  • Average pressure in September: 1005.4mbar

The month with the highest atmospheric pressure is January (1016.1mbar).
The month with the lowest atmospheric pressure is June (999.9mbar).

Average wind speed in September - Ranchi, India
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is July (10.8km/h).
The calmest month (with the lowest average wind speed) is November (6.9km/h).

Average humidity in September - Ranchi, India
  • Average humidity in September: 83%

The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is April (26%).

Average rainfall in September - Ranchi, India
  • Average rainfall in September: 139mm

The wettest month (with the highest rainfall) is August (223mm).
The driest month (with the least rainfall) is November (6mm).

Average rainfall days in September - Ranchi, India
  • Average rainfall days in September: 20.9 days

The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is November (2.4 days).

Average daylight in September / Average sunshine in September - Ranchi, India
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.6h).
The month with the shortest days is December (Average daylight: 10.7h).

  • Average sunshine in September: 7.5h

The month with the most sunshine is May (Average sunshine: 12h).
Months with the least sunshine are January, February and December (Average sunshine: 7.4).

Average sunshine days in September - Ranchi, India
  • Average sunshine days in September: 8.1 days

The month with the most sunshine days is December (28.2 days).
The month with the least sunshine days is July (5.7 days).

Average UV index in September - Ranchi, India
  • Average UV index in September: 6

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

Average cloud cover in September - Ranchi, India
  • Average cloud cover in September: 49

The month with the most cloud cover is August (Cloud cover 59).
Months with the least cloud cover are April and December (Cloud cover 9).

Average visibility in September - Ranchi, India
  • Average visibility in September: 8km

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