September weather forecast and climate
Trombay, India

The last month of the rainy (monsoon) season, September, is another warm month in Trombay, India, with temperature in the range of an average high of 29.2°C (84.6°F) and an average low of 25.4°C (77.7°F).

Temperature

In Trombay, the average high-temperature in September is essentially the same as in August - a still moderately hot 29.2°C (84.6°F). In Trombay, the average low-temperature is 25.4°C (77.7°F).

Heat index

In September, the average heat index is evaluated at a torrid 35.8°C (96.4°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, pregnancy, wind), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. 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

The average relative humidity is 82%.

Rainfall

In Trombay, during 22.3 rainfall days, 176mm (6.93") of precipitation is typically accumulated. Throughout the year, there are 133.4 rainfall days, and 1524mm (60") of precipitation is accumulated.

Daylight

In Trombay, India, the average length of the day is 12.2h.

Sunshine

In September, the average sunshine is 7.6h.

UV index

The average daily maximum UV index in Trombay is 7. A UV Index reading of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Trombay?

In Trombay, in September, the average high-temperature is 29.2°C (84.6°F), and the average low-temperature is 25.4°C (77.7°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that factores the actual air temperature with the relative humidity, in September is evaluated at 35.8°C (96.4°F).

What is the average humidity in September in Trombay?

In September, the average relative humidity in Trombay, India, is 82%.

How many days does it rain in September in Trombay?

In Trombay, India, in September, during 22.3 rainfall days, 176mm (6.93") of precipitation is typically accumulated.

How many hours of daylight does Trombay have in September?

The average length of the day in September in Trombay is 12.2h.

How long on average sun shines in September in Trombay?

In September, the average sunshine in Trombay, India, is 7.6h.

How high is the UV index in September in Trombay?

In Trombay, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Trombay, India
  • Average high temperature in September: 29.2°C

The warmest month (with the highest average high temperature) is April (33.2°C).
The month with the lowest average high temperature is August (28.3°C).

  • Average low temperature in September: 25.4°C

The month with the highest average low temperature is June (27.4°C).
The coldest month (with the lowest average low temperature) is January (21.6°C).

Average pressure in September - Trombay, India
  • Average pressure in September: 1007.9mbar

The month with the highest atmospheric pressure is January (1013.8mbar).
The month with the lowest atmospheric pressure is July (1004.3mbar).

Average wind speed in September - Trombay, India
  • Average wind speed in September: 11.5km/h

The windiest month (with the highest average wind speed) is July (18.9km/h).
The calmest month (with the lowest average wind speed) is October (8.7km/h).

Average humidity in September - Trombay, India
  • Average humidity in September: 82%

Months with the highest relative humidity are July and August (84%).
Months with the lowest relative humidity are January and February (52%).

Average rainfall in September - Trombay, India
  • Average rainfall in September: 176mm

The wettest month (with the highest rainfall) is July (568mm).
The driest months (with the least rainfall) are January and April (0mm).

Average rainfall days in September - Trombay, India
  • Average rainfall days in September: 22.3 days

The month with the highest number of rainy days is July (30.4 days).
The month with the least rainy days is February (0.5 days).

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

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in September: 7.6h

Months with the most sunshine are January, February, March and April (Average sunshine: 9.9h).
The month with the least sunshine is July (Average sunshine: 5h).

Average sunshine days in September - Trombay, India
  • Average sunshine days in September: 5.8 days

The month with the most sunshine days is January (30.1 days).
The month with the least sunshine days is July (0.4 days).

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

The month with the highest UV index is May (UV index 8).
Months with the lowest UV index are June and July (UV index 6).

Average cloud cover in September - Trombay, India
  • Average cloud cover in September: 46

The month with the most cloud cover is July (Cloud cover 67).
Months with the least cloud cover are January and February (Cloud cover 4).

Average visibility in September - Trombay, India
  • Average visibility in September: 10km

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