September weather forecast
Kalyan, India

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Weather in September

September ushers in an easing of the monsoon season in Kalyan, India, characterised by a marked decrease in various weather parameters. Rainfall drops substantially to 130mm (5.12"), delineating a prominent shift from August. However, the persistence of the city's high humidity levels ensures that the weather remains relatively damp. September’s significant reduction in cloud coverage manifests itself in more sunshine hours per day. October, on the other hand, welcomes a shift towards drier conditions and more sunshine hours.

Temperature

September's onset sees an average high-temperature of a still warm 29.5°C (85.1°F), exhibiting a slight fluctuation from the previous month. Kalyan's average low-temperature in September is measured at a still moderately hot 23.5°C (74.3°F).

Heat index

During September, the heat index is appraised at a fiery hot 37°C (98.6°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in September is 85%.

Rainfall

In September, in Kalyan, India, the rain falls for 23.8 days. Throughout September, 130mm (5.12") of precipitation is accumulated. In Kalyan, India, during the entire year, the rain falls for 138.3 days and collects up to 1253mm (49.33") of precipitation.

Daylight

The average length of the day in September in Kalyan is 12h and 15min.
On the first day of the month, sunrise is at 6:22 am and sunset at 6:52 pm. On the last day of September, in Kalyan, sunrise is at 6:27 am and sunset at 6:26 pm IST.

Sunshine

In Kalyan, the average sunshine in September is 7h.

UV index

In Kalyan, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

How hot is it in Kalyan in September?

September temperatures vary between a high-temperature of 29.5°C (85.1°F) and a low-temperature of 23.5°C (74.3°F). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in September is appraised at 37°C (98.6°F).

What is the average humidity in September in Kalyan?

In September, the average relative humidity is 85%.

How much does it rain in Kalyan in September?

In Kalyan, during September, the rain falls for 23.8 days and regularly aggregates up to 130mm (5.12") of precipitation.

How many hours of daylight does Kalyan have in September?

The average day length in September is 12h and 15min.

When is the sunrise / sunset in September in Kalyan?

In September, on the first day of the month, sunrise is at 6:22 am and sunset at 6:52 pm. On the last day of the month, in Kalyan, sunrise is at 6:27 am and sunset at 6:26 pm IST.

How long on average sun shines in September in Kalyan?

In September, the average sunshine duration is 7h.

What is the UV index intensity in September in Kalyan?

In September, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in September
Kalyan, India

Average temperature in September - Kalyan, India
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is April (37.6°C).
The month with the lowest average high temperature is July (28.2°C).

  • Average low temperature in September: 23.5°C

The month with the highest average low temperature is June (26.3°C).
The coldest month (with the lowest average low temperature) is January (19.1°C).

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Average pressure in September
Kalyan, India

Average pressure in September - Kalyan, India
  • Average pressure in September: 1007.8mbar

The month with the highest atmospheric pressure is January (1013.9mbar).
The month with the lowest atmospheric pressure is July (1004.2mbar).

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Average wind speed in September
Kalyan, India

Average wind speed in September - Kalyan, India
  • Average wind speed in September: 6.8km/h

The windiest month (with the highest average wind speed) is July (11.4km/h).
The calmest month (with the lowest average wind speed) is October (5.2km/h).

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Average humidity in September
Kalyan, India

Average humidity in September - Kalyan, India
  • Average humidity in September: 85%

The month with the highest relative humidity is August (88%).
The months with the lowest relative humidity are February and March (41%).

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Average rainfall in September
Kalyan, India

Average rainfall in September - Kalyan, India
  • Average rainfall in September: 130mm

The wettest month (with the highest rainfall) is July (487mm).
The driest months (with the least rainfall) are January and April (0mm).

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Average rainfall days in September
Kalyan, India

Average rainfall days in September - Kalyan, India
  • Average rainfall days in September: 23.8 days

The month with the highest number of rainy days is August (30.4 days).
The month with the least rainy days is February (0.3 days).

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Average daylight in September /
Average sunshine in September
Kalyan, India

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

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in September: 7h and 0min

The months with the most sunshine are January, February and May (Average sunshine: 10h and 0min).
The month with the least sunshine is July (Average sunshine: 3h and 42min).

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Average sunshine days in September
Kalyan, India

Average sunshine days in September - Kalyan, India
  • Average sunshine days in September: 3.1 days

The month with the most sunshine days is January (30.3 days).
The month with the least sunshine days is August (0.4 days).

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Average UV index in September
Kalyan, India

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

The months with the highest UV index are April and May (UV index 8).
The months with the lowest UV index are June, July, August and December (UV index 6).

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Average cloud cover in September
Kalyan, India

Average cloud cover in September - Kalyan, India
  • Average cloud cover in September: 51

The month with the most cloud cover is July (Cloud cover 76).
The months with the least cloud cover are January and February (Cloud cover 4).

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Average visibility in September
Kalyan, India

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

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

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Kalyan, India

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