The highest day temperature in October 2025 was 94°F. The lowest night temperature was 79°F. The average values for day and night temperatures during October were 89.4°F и 83.2°F respectivly.

The average sea surface temperature in October 2025 for Chennai was 89.0°F. The maximum and minimum values were 88.0°F and 90.0°F respectively.

Most of the days in October are sunny but you can also expect cloudy and gloomy days.

Precipitation total in October for Chennai is 5.0 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 8.9 mph. It makes October one of the most windless months of the year for Chennai.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Chennai in October is 7.4 hours.