The highest day temperature in September 2025 was 102°F. The lowest night temperature was 53°F. The average values for day and night temperatures during September were 91.7°F и 63.0°F respectivly.

The average sea surface temperature in September 2025 for Gyumyuldur was 76.9°F. The maximum and minimum values were 73.6°F and 80.2°F respectively.

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

Precipitation total in September for Gyumyuldur is 0.5 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 9.5 mph. It makes September one of the most windless months of the year for Gyumyuldur.

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 Gyumyuldur in September is 11.4 hours.