September Weather in Sayn-Ust, Mongolia

Last updated: August 28, 2025

In Sayn-Ust, Mongolia, the average temperature in September is a comfortable 14°C (57°F). However, temperatures can vary significantly, with a minimum of -7°C (20°F) and a maximum of 32°C (89°F). Expect a bit of moisture, as the precipitation amount averages 10 mm (0.4 in) over 2 days, while the average humidity sits at a moderate 54%.

September Temperature in Sayn-Ust

In September in Sayn-Ust, the average temperature is 14°C (57°F). Maximums can reach 32°C (89°F), while minimums can drop as low as -7°C (20°F). Be prepared for a wide range of temperatures when traveling during this time.

September Weather in Sayn-Ust: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sayn-Ust, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sayn-Ust, September typically has an average temperature of 14°C (57°F), with highs reaching up to 32°C (89°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for Sayn-Ust generated using information from the Copernicus Climate Change Service.

September Precipitation in Sayn-Ust

In Sayn-Ust in September, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

September Precipitation Trends in Sayn-Ust

The chart displays monthly precipitation patterns in Sayn-Ust, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sayn-Ust, September typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Sayn-Ust

In Sayn-Ust in September, humidity is 54%. With an average temperature of 14°C (57°F), this humidity feels like a mild embrace, making it comfortable for traveling with just a light jacket at hand.

September Average Humidity in Sayn-Ust

This chart illustrates the average monthly humidity levels in Sayn-Ust, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sayn-Ust is approximately 54%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sayn-Ust

In Sayn-Ust in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Sayn-Ust.

Maximum UV Index Levels in Sayn-Ust for September

The chart shows the monthly maximum UV Index (UVI) for Sayn-Ust in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sayn-Ust typically reaches 7, which falls under the high exposure category.

Data source: Sayn-Ust September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Sayn-Ust Compares to Other Months

Weather in Sayn-Ust varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sayn-Ust, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sayn-Ust, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-19°C (-3°F)	2 mm (0.1 inches)	97%	low
February Weather	-13°C (9°F)	2 mm (0.1 inches)	94%	moderate
March Weather	-1°C (30°F)	3 mm (0.1 inches)	87%	moderate
April Weather	8°C (47°F)	5 mm (0.2 inches)	67%	high
May Weather	15°C (60°F)	8 mm (0.3 inches)	45%	very high
June Weather	21°C (70°F)	16 mm (0.6 inches)	42%	very high
July Weather	23°C (73°F)	25 mm (1.0 inches)	46%	very high
August Weather	20°C (67°F)	39 mm (1.5 inches)	52%	very high
September Weather	14°C (57°F)	10 mm (0.4 inches)	54%	high
October Weather	3°C (38°F)	6 mm (0.2 inches)	63%	moderate
November Weather	-7°C (20°F)	3 mm (0.1 inches)	81%	low
December Weather	-18°C (-1°F)	2 mm (0.1 inches)	95%	low