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

Temperature

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

Humidity

In Chennai, the average relative humidity in September is 72%.

Rainfall

In Chennai, during 7.1 rainfall days, 137.3mm (5.4") of precipitation is typically accumulated. In Chennai, during the entire year, the rain falls for 59.1 days and collects up to 1391.5mm (54.8") of precipitation.

Sea temperature

In September, the average sea temperature in Chennai is 29.3°C (84.7°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

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

Sunshine

In September, the average sunshine in Chennai is 6.6h.

UV index

Months with the highest UV index are February through September, with an average UV index of 12.

What is the temperature in September in Chennai?

The average high-temperature, in September, is 33.9°C (93°F), while the average low-temperature is 25.5°C (77.9°F).

What is the average humidity in September in Chennai?

In Chennai, the average relative humidity in September is 72%.

How much does it rain in Chennai in September?

In Chennai, India, in September, it is raining for 7.1 days, with typically 137.3mm (5.4") of accumulated precipitation.

How warm is the water in September in Chennai?

In September, the average sea temperature in Chennai is 29.3°C (84.7°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

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

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

How long on average sun shines in September in Chennai?

In Chennai, the average sunshine in September is 6.6h.

What is the month with the highest UV index in Chennai?

Months with the highest UV index in Chennai are February through September, with an average UV index of 12.

What is the UV index reading in September in Chennai?

In Chennai, the average UV index in September is 12.
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).

deutscheenglishespañolрусский中文