Ulan-Ude weather in September

In September, Ulan-Ude sees average daytime highs of 15°C and overnight lows near 4°C, with 44 mm of precipitation across 8.5 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 12°C by the end. The sky is clear or mostly clear about 30% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Ulan-Ude's 7th-clearest and 6th-windiest month. For the whole year in context, see Ulan-Ude's year-round climate.

Daytime high
15°
5th warmest
Overnight low
9th coldest
Precipitation
44 mm
8.5 wet days
Daylight
12 h 24 min
6:32 AM – 6:56 PM
Cloud cover
59%
7th clearest
Wind
9 km/h
6th windiest
Solar energy
3.66 kWh/m²
Travel score
4.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 12°C by the end.

A typical September day in Ulan-Ude reaches about 15°C in the afternoon and slips back to 4°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 22°C. Set against its neighbours, September runs about 7°C cooler than August and about 9°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1198
2198
3197
4197
5187
6186
7186
8176
9176
10175
11175
12165
13164
14164
15164
16154
17153
18153
19153
20143
21142
22142
23132
24131
25131
26131
27121
28120
29120
30110

How September really feels in Ulan-Ude

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 10 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
10
wind chill below the day's low

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

Ulan-Ude weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-17° / -28°312.18.10.0
Feb-10° / -25°31.11.79.60.0
Mar-0° / -15°51.72.411.50.0
Apr / -4°153.72.713.62.2
May17° / 316.81.115.45.8
Jun23° / 10°447.7016.47.2
Jul25° / 13°539.60166.8
Aug22° / 11°689.9014.46.7
Sep15° / 448.50.312.44.9
Oct / -5°143.92.610.40.9
Nov-6° / -15°93.24.58.60.0
Dec-14° / -24°72.447.60.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54753
64852
74852
84852
94852
104852
114852
124852
134951
144951
155050
164951
175050
184951
194951
204852
214852
224852
234852
244852
254852
264753
274753
284753
294753
304753

Chance of precipitation in September

Any precipitationSnow

Ulan-Ude gets around 44 mm of rain and snow over 8.5 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 27% and peaks near 31% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
1290
2290
3290
4300
5300
6300
7311
8311
9311
10301
11301
12291
13291
14281
15271
16271
17261
18261
19261
20251
21252
22252
23242
24242
25232
26222
27222
28213
29213
30203

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1937
2946
3955
4964
5973
6973
7982
8982
9991
10991
11991
12991
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 24 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 120 minutes over September. Sunrise moves from 6:07 AM to 6:56 AM, and sunset from 7:32 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:077:32
213.36:097:29
313.36:107:27
413.26:127:25
513.16:147:22
613.16:157:20
713.06:177:17
812.96:197:15
912.96:207:13
1012.86:227:10
1112.76:247:08
1212.76:257:05
1312.66:277:03
1412.56:297:01
1512.56:306:58
1612.46:326:56
1712.36:346:53
1812.36:356:51
1912.26:376:48
2012.16:396:46
2112.16:416:44
2212.06:426:41
2311.96:446:39
2411.86:466:36
2511.86:476:34
2611.76:496:32
2711.66:516:29
2811.66:526:27
2911.56:546:24
3011.46:566:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.66 kWh/m².

For context, solar energy here swings from a low near 0.99 kWh/m² to a high of 6.41 kWh/m² in June across the year — September's 3.66 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.0Bright
84.0Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.8Moderate
133.8Moderate
143.7Moderate
153.7Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.4Moderate
233.4Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.2Moderate
283.2Moderate
293.1Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Ulan-Ude?

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

4.9
Sightseeing
5th-best month of the year
0.9
Beach & pool
5th-best month of the year

September is a reasonable time to visit Ulan-Ude for sightseeing.

What to pack for Ulan-Ude in September

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

In September, Ulan-Ude sees daytime highs around 15°C and nights near 4°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

UV index in Ulan-Ude in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ulan-Ude peaks around July 13 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 7Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr4Moderate
May5High
Jun6High
Jul7High
Aug5High
Sep3Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Ulan-Ude in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Ulan-Ude is worst in August — around 58 µg/m³ PM2.5 (unhealthy), about 27.6× the cleanest month (December, 2 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorGoodAug 1553 µg/m³Dec 152 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb5Good
Mar6Good
Apr10Good
May13Moderate
Jun15Moderate
Jul23Moderate
Aug58Unhealthy
Sep7Good
Oct6Good
Nov4Good
Dec2Good
Location & terrain

Where is Ulan-Ude?

Ulan-Ude sits at 51.8°N, 107.6°E, 536 m above sea level, in Russia. The nearest listed city is Gusinoozyorsk, 97 km away.

Topography around Ulan-Ude

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

Within 3 km, the terrain around Ulan-Ude has only modest variations in elevation — a maximum elevation change of 177 m around an average of 532 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 702 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,272 m.

The land around Ulan-Ude is covered by artificial surfaces (64%) within 3 km, trees (49%) and grassland (25%) within 16 km, and trees (66%) and grassland (26%) within 80 km.

3 km
177 m
16 km
702 m
80 km
1,272 m
treesgrasslandcroplandartificial surfacesbare terrainwatermoss and lichen
September weather nearby: Gusinoozyorsk 97 km · Petrovsk-Zabaykal’skiy 106 km · Kyakhta 183 km · Sühbaatar 202 km · Irkutsk 232 km · Markova 235 km · Baykal’sk 241 km · Shelekhov 243 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

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 Ulan-Ude (51.8265°, 107.5998°, elevation 536 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).