Mongolia in September

September is Mongolia's 4th-best month (rank 4 of 12): its 2 destinations average 84/100, led by Gobi Desert at 90 — 23°C and 3 rainy days — while Ulaanbaatar is cooler at 14°C and scores 78.

#4 of 12 months for Mongolia · 2 destinations · updated September 2026 · climate normals from ERA5 reanalysis

🇲🇳 Mongolia, month by month

84/100 in September
  1. 39Jan
  2. 45Feb
  3. 63Mar
  4. 78Apr
  5. 87May
  6. 86Jun
  7. 83Jul
  8. 85Aug
  9. 84Sep
  10. 72Oct
  11. 51Nov
  12. 36Dec

Where in Mongolia in September

#PlaceTypeFeels-like highRainComfortAt its best
1Gobi DesertTrekking hub23°C11 mm · 3 days90 tier SYes
2UlaanbaatarCity14°C43 mm · 8 days78 tier B—

Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means September is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.

What's on in Mongolia in September

  • Larch turning in Terelj · Ulaanbaatar · 10 Sep – 5 Oct (usually)

Seasons in force

Dry season · 1 place

Better months for Mongolia

May · 87/100June · 86/100August · 85/100Weakest: December · 36/100
← Mongolia in AugustMongolia in October →Best time to visit Mongolia, month by monthCompare: Gobi Desert vs Ulaanbaatar in September