Ölgii Weather in September
During September, Ölgii experiences moderate daytime temperatures of 14°C (57°F) and cooler nights around 1°C (34°F). Some rainfall is typical during this period.
Rainfall in Ölgii in September
Climate statistics over the past 30 years suggest around 9 days of rain, with 16 mm (0.6 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Ölgii in September
In September, Ölgii sees moderate temperatures, with highs of 14°C (57°F). Nights drop to around 1°C (34°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 1°C (34°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.For Ölgii itself, June, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mongolia, check out our Ölgii's climate page.
Ölgii Temperature in September
Min Temperature
1°C (34°F)
Max Temperature
14°C (57°F)
Chance of Rain
29%
Precipitation
16 mm (0.6 in)
Rainy days
9 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ölgii typically drop from around 18°C (64°F) at the start of September to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from -1°C (30°F) to 6°C (43°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Ölgii in September
Browse day-by-day weather records for Ölgii spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ölgii historical weather extremes in September
Based on 31 years of weather observations in Ölgii between 1994 and 2025, these are the recorded extremes.
- The warmest day in September was on September 5, 2003, with a maximum of 29°C (84°F).
- On September 25, 2017, Ölgii saw its coldest September day with temperatures maxing out at 0°C (32°F).
- The lowest overnight temperature recorded in September was -14°C (7°F) (September 28, 2023).
Best Places in Mongolia in September
Find out more about the weather in Mongolia and which places have the best travel conditions in this month. See all of Mongolia in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Ölgii in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Almost no rain is expected, so no need to bring rain gear.What To Do in Ölgii in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mongolia, check out our Ölgii's climate page.
See the full Ölgii climate overview or explore weather in Mongolia.
