Ulaangom weather in September

In September, Ulaangom sees average daytime highs of 17°C and overnight lows near 6°C, with 30 mm of precipitation across 6.7 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 13°C by the end. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Ulaangom's 3rd-clearest and 4th-windiest month. For the whole year in context, see Ulaangom's year-round climate.

Daytime high
17°
5th warmest
Overnight low
8th coldest
Precipitation
30 mm
6.7 wet days
Daylight
12 h 24 min
6:35 AM – 6:57 PM
Cloud cover
46%
3rd clearest
Wind
8 km/h
4th windiest
Solar energy
4.41 kWh/m²
Travel score
5.8
out of 10

Ulaangom is capital of Uvs Province in Mongolia.

Density
218/km²
people per km²
Founded
1686

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 13°C by the end.

A typical September day in Ulaangom reaches about 17°C in the afternoon and slips back to 6°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 22°C. Set against its neighbours, September runs about 6°C cooler than August and about 9°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12010
22010
3209
4209
5199
6199
7198
8198
9188
10187
11187
12187
13177
14176
15176
16176
17165
18165
19165
20165
21154
22154
23154
24154
25143
26143
27143
28133
29132
30132

How September really feels in Ulaangom

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 1 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
1
wind chill below the day's low

The story in September is cold — wind chill drags the overnight "feels like" below the raw low.

Ulaangom weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-15° / -24°10.30.68.40.0
Feb-11° / -21°31.11.99.70.0
Mar-2° / -13°82.83.111.50.0
Apr10° / -1°144.11.613.52.8
May19° / 215.70.715.16.5
Jun24° / 13°367.60.116.17.1
Jul25° / 16°5810.8015.76.6
Aug23° / 13°5510.1014.36.9
Sep17° / 306.70.512.45.8
Oct / -2°133.41.810.51.7
Nov-5° / -12°622.68.80.0
Dec-14° / -21°20.50.97.90.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16238
26238
36238
46337
56337
66337
76436
86436
96535
106634
116634
126733
136733
146733
156832
166832
176832
186832
196832
206832
216832
226733
236733
246733
256634
266634
276535
286535
296535
306436

Chance of precipitation in September

Any precipitationSnow

Ulaangom gets around 30 mm of rain and snow over 6.7 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 22% and peaks near 25% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
1250
2250
3250
4250
5250
6250
7251
8251
9241
10241
11231
12231
13221
14221
15221
16222
17212
18212
19212
20212
21203
22203
23193
24193
25183
26183
27183
28173
29173
30173

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
2991
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over September. Sunrise moves from 6:12 AM to 6:57 AM, and sunset from 7:31 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:127:31
213.36:137:29
313.26:157:27
413.16:177:24
513.16:187:22
613.06:207:20
712.96:217:18
812.96:237:15
912.86:247:13
1012.86:267:11
1112.76:277:09
1212.66:297:06
1312.66:307:04
1412.56:327:02
1512.46:336:59
1612.46:356:57
1712.36:376:55
1812.26:386:53
1912.26:406:50
2012.16:416:48
2112.06:436:46
2212.06:446:43
2311.96:466:41
2411.96:476:39
2511.86:496:37
2611.76:516:34
2711.76:526:32
2811.66:546:30
2911.56:556:27
3011.56:576:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.41 kWh/m².

For context, solar energy here swings from a low near 1.2 kWh/m² to a high of 6.9 kWh/m² in June across the year — September's 4.41 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.1Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Ulaangom?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.8
Sightseeing
5th-best month of the year
1.5
Beach & pool
5th-best month of the year

September is a reasonable time to visit Ulaangom for sightseeing.

What to pack for Ulaangom in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Ulaangom sees daytime highs around 17°C and nights near 6°C. Worth packing: a warm layer. About 7 days see rain.

a warm layer

UV index in Ulaangom in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ulaangom peaks around July 16 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 16UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May8Very high
Jun7High
Jul8Very high
Aug7High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Ulaangom?

Ulaangom sits at 50.0°N, 92.1°E, 935 m above sea level, in Mongolia. The nearest listed city is Ölgii, 189 km away.

ÖlgiiKhovdKyzylAbazaSayanogorskShushenskoye

Topography around Ulaangom

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ulaangom.

Within 3 km, the terrain around Ulaangom has only modest variations in elevation — a maximum elevation change of 199 m around an average of 939 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 635 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,264 m.

The land around Ulaangom is covered by grassland (73%) within 3 km, grassland (87%) within 16 km, and grassland (62%) within 80 km.

3 km
199 m
16 km
635 m
80 km
3,264 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmoss and lichen
September weather nearby: Ölgii 189 km · Khovd 222 km · Kyzyl 254 km · Abaza 327 km · Sayanogorsk 350 km · Shushenskoye 372 km · Minusinsk 414 km · Abakan 418 km

Mongolia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$7,108
2025
Happiness
5.9 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
5.9
per 100k, 2023
Road deaths
21
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 447
Religion
Buddhist 52%no religion 41%Muslim 3%Shaman 3%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Ulaangom (49.9811°, 92.0667°, elevation 935 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).