September weather forecast and climate
Chennai, India

A staircase to the front entrance of the Ramakrishna Temple in Chennai, India
A staircase to the front entrance of the Ramakrishna Temple in Chennai, India

What is the temperature in September in Chennai?

In Chennai, India, in September, the average high-temperature is 33.9°C (93°F), and the average low-temperature is 25.5°C (77.9°F).

How much does it rain in Chennai in September?

In Chennai, during September, the rain falls for 7.1 days and regularly aggregates up to 137.3mm (5.4") of precipitation.
Average temperature in September - Chennai, India
  • Average high temperature in September: 33.9°C

The warmest month (with the highest average high temperature) is June (36.9°C).
The month with the lowest average high temperature is December (28.5°C).

  • Average low temperature in September: 25.5°C

The month with the highest average low temperature is May (27.9°C).
The coldest month (with the lowest average low temperature) is January (20.9°C).

Average humidity in September - Chennai, India
  • Average humidity in September: 72%

The month with the highest relative humidity is November (78%).
The month with the lowest relative humidity is June (57%).

Average rainfall in September - Chennai, India
  • Average rainfall in September: 137.3mm

The wettest month (with the highest rainfall) is November (407.4mm).
The driest month (with the lowest rainfall) is February (2.2mm).

Average rainfall days in September - Chennai, India
  • Average rainfall days in September: 7.1 days

The month with the highest number of rainy days is November (11.7 days).
The month with the lowest number of rainy days is March (0.3 days).

Average sea temperature in September - Chennai, India
  • Average sea temperature in September: 29.3°C

The best month for swimming (with the highest average sea temperature) is May (29.5°C).
The coldest month (with the lowest average sea temperature) is January (26.8°C).

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

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.4h).

  • Average sunshine in September: 6.6h

The month with most sunshine is April (Average sunshine: 9.7h).
The month with least sunshine is July (Average sunshine: 6h).

Average UV index in September - Chennai, India
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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