The highest day temperature in October 2025 was 93°F. The lowest night temperature was 54°F. The average values for day and night temperatures during October were 76.1°F и 67.8°F respectivly.

The average sea surface temperature in October 2025 for Nantong was 77.4°F. The maximum and minimum values were 67.2°F and 82.6°F respectively.

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

Precipitation total in October for Nantong is 1.5 in.

The average wind speed in October is 8.6 mph. This value is relatively stable throughout the year.

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 Nantong in October is 7.2 hours.