Mongolia
Mongolia in September
Where it is warm, dry and good for swimming in Mongolia in September — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Mongolia in September?
- Dalandzadgad is the warmest of the 16 destinations compared, with highs of 20°C (68°F) in September; Altai is the coolest at 13°C (56°F).
Warmest
20°
Dalandzadgad
Coolest
13°
Altai
Driest
10 mm
Dalandzadgad
Across Mongolia, September highs run from 13°C (56°F) (Altai) to 20°C (68°F) (Dalandzadgad). On average it is 6 °C (11 °F) cooler than August. Most destinations stay largely dry. Best bets this month: Dalandzadgad, Ulaanbaatar, and Khovd.
Best places in Mongolia in September
87 
Dalandzadgad
Ömnögovĭ · Mongolia
20° / 7° 10 mm Sep
63
Ulaanbaatar
Ulaanbaatar · Mongolia
16° / 2° 33 mm Sep
76
Khovd
Khovd Province · Mongolia
17° / 4° 11 mm Sep
77
Baruun-Urt
Sühbaatar · Mongolia
18° / 4° 21 mm Sep
74
Choibalsan
East Aimak · Mongolia
18° / 5° 31 mm Sep
72
Undurkhaan
Hentiy · Mongolia
18° / 2° 23 mm Sep
67
Ulaangom
Uvs Province · Mongolia
17° / 3° 14 mm Sep
64
Darkhan
Darhan Uul · Mongolia
17° / 2° 38 mm Sep
Weather in September by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Dalandzadgad | 20° | 7° | 10 mm | — | 87 |
| Baruun-Urt | 18° | 4° | 21 mm | — | 77 |
| Khovd | 17° | 4° | 11 mm | — | 76 |
| Choibalsan | 18° | 5° | 31 mm | — | 74 |
| Undurkhaan | 18° | 2° | 23 mm | — | 72 |
| Ulaangom | 17° | 3° | 14 mm | — | 67 |
| Darkhan | 17° | 2° | 38 mm | — | 64 |
| Bayanhongor | 15° | 1° | 21 mm | — | 64 |
| Ulaanbaatar | 16° | 2° | 33 mm | — | 63 |
| Sühbaatar | 16° | 3° | 38 mm | — | 62 |
| Ölgii | 15° | 2° | 10 mm | — | 59 |
| Uliastai | 15° | 0° | 20 mm | — | 59 |
| Cecerleg | 15° | 1° | 26 mm | — | 58 |
| Bulgan | 16° | 0° | 34 mm | — | 58 |
| Erdenet | 15° | 0° | 43 mm | — | 56 |
| Altai | 13° | 0° | 17 mm | — | 56 |
Frequently asked questions
What is the weather like in Mongolia in September?
Average daytime highs range from 13° in Altai to 20° in Dalandzadgad.