The highest day temperature in September 2026 was 92°F. The lowest night temperature was 76°F. The average values for day and night temperatures during September were 88.1°F и 78.6°F respectivly.

The average sea surface temperature in September 2026 for Dadunhai was 85.9°F. The maximum and minimum values were 82.4°F and 90.0°F respectively.

Most of the days in September are cloudy but you can also expect sunny or gloomy days.

Precipitation total in September for Dadunhai is 5.0 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 6.4 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 Dadunhai in September is 7.0 hours.