The highest day temperature in September 2025 was 87°F. The lowest night temperature was 43°F. The average values for day and night temperatures during September were 73.2°F и 57.5°F respectivly.

The average sea surface temperature in September 2025 for Van was 75.4°F. The maximum and minimum values were 69.2°F and 78.8°F respectively.

Almost all days in September are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in September for Van is 0.1 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 5.4 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 Van in September is 11.5 hours.