The highest day temperature in September 2026 was 96°F. The lowest night temperature was 77°F. The average values for day and night temperatures during September were 87.9°F и 81.0°F respectivly.

The average sea surface temperature in September 2026 for Chumphon was 88.3°F. The maximum and minimum values were 87.8°F and 89.0°F respectively.

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

Precipitation total in September for Chumphon is 5.2 in. It makes september one of the most rainy months of the year.

The average wind speed in September is 8.2 mph.

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 Chumphon in September is 5.5 hours.