Ust’-Kut weather in October

In October, Ust’-Kut sees average daytime highs of 2°C and overnight lows near -6°C, with 37 mm of precipitation across 10.4 wet days and about 10 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 6°C in the first days to -3°C by the end. The sky is clear or mostly clear about 12% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 12 min at the start of October to 8 h 54 min by month's end. Set against the rest of the year, October is Ust’-Kut's 8th-clearest and 3rd-windiest month. For the whole year in context, see Ust’-Kut's year-round climate.

Daytime high
7th warmest
Overnight low
-6°
7th coldest
Precipitation
37 mm
10.4 wet days
Daylight
10 hours
7:41 AM – 5:43 PM
Cloud cover
78%
8th clearest
Wind
10 km/h
3rd windiest
Solar energy
1.57 kWh/m²
Travel score
0.1
out of 10

Ust’-Kut is human settlement in Ust-Kutsky District, Irkutsk Oblast, Russia.

Density
861/km²
people per km²
Founded
1631

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 6°C in the first days to -3°C by the end.

A typical October day in Ust’-Kut reaches about 2°C in the afternoon and slips back to -6°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -4°C and 8°C. Set against its neighbours, October runs about 10°C cooler than September and about 12°C warmer than November.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
17-2
26-2
36-2
46-2
56-3
65-3
75-3
85-3
94-4
104-4
114-4
123-5
133-5
143-5
152-6
162-6
172-6
181-7
191-7
201-7
210-8
220-8
230-8
24-1-9
25-1-9
26-2-10
27-2-10
28-2-10
29-3-11
30-3-11
31-4-12

How October really feels in Ust’-Kut

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 31 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
31
16 feel bitter (≤ -10°C)

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

Ust’-Kut weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-20° / -28°134.78.67.20.0
Feb-14° / -24°113.879.10.0
Mar-4° / -16°186.28.611.40.0
Apr / -7°289713.90.4
May14° / 4411.72.116.13.6
Jun21° / 5711.8017.46.0
Jul23° / 12°6911.4016.96.6
Aug20° / 7211.3014.96.0
Sep12° / 5111.21.312.52.9
Oct / -6°3710.48.9100.1
Nov-11° / -19°278.611.47.80.0
Dec-18° / -26°186.610.26.60.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 6% of October, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
31981
41981
51981
62080
72080
82080
91981
101981
111981
121882
131882
141981
152080
162080
172080
181981
191981
201981
211981
221882
231882
241882
251783
261585
271585
281585
291486
301486
311486

Chance of precipitation in October

Any precipitationSnow

Ust’-Kut gets around 37 mm of rain and snow over 10.4 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 36% on the wettest days, and about 9 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13615
23616
33617
43518
53520
63521
73522
83523
93524
103424
113425
123426
133327
143327
153228
163229
173229
183130
193130
203131
213232
223233
233234
243335
253336
263337
273437
283438
293439
303439
313440

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October 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%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 12 min at the start of October to 8 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 138 minutes over October. Sunrise moves from 7:09 AM to 8:15 AM, and sunset from 6:23 PM to 5:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:096:23
211.27:116:20
311.17:136:18
411.07:156:15
510.97:176:12
610.87:196:09
710.87:226:07
810.77:246:04
910.67:266:01
1010.57:285:58
1110.47:305:56
1210.37:325:53
1310.37:355:50
1410.27:375:48
1510.17:395:45
1610.07:415:43
179.97:435:40
189.97:465:37
199.87:485:35
209.77:505:32
219.67:525:30
229.57:545:27
239.57:575:25
249.47:595:23
259.38:015:20
269.28:035:18
279.28:065:15
289.18:085:13
299.08:105:11
308.98:125:08
318.98:155:06

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 1.57 kWh/m².

For context, solar energy here swings from a low near 0.45 kWh/m² to a high of 5.9 kWh/m² in June across the year — October's 1.57 kWh/m² falls in the middle.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.1Moderate
32.1Moderate
42.0Moderate
52.0Dim
61.9Dim
71.9Dim
81.9Dim
91.8Dim
101.8Dim
111.7Dim
121.7Dim
131.7Dim
141.6Dim
151.6Dim
161.6Dim
171.5Dim
181.5Dim
191.5Dim
201.4Dim
211.4Dim
221.4Dim
231.3Dim
241.3Dim
251.3Dim
261.3Dim
271.2Dim
281.2Dim
291.2Dim
301.1Dim
311.1Dim
Planning a trip in October

Is October a good time to visit Ust’-Kut?

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

0.1
Sightseeing
7th-best month of the year
0.0
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Ust’-Kut.

What to pack for Ust’-Kut in October

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

In October, Ust’-Kut sees daytime highs around 2°C and nights near -6°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Ust’-Kut in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ust’-Kut peaks around June 21 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 21UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr4Moderate
May5Moderate
Jun6High
Jul5High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low

Air quality in Ust’-Kut in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Ust’-Kut is worst in July — around 56 µg/m³ PM2.5 (unhealthy), about 46.8× the cleanest month (December, 1 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodPoorPoorModerateGoodJul 2155 µg/m³Dec 181 µg/m³
PM2.5 (µg/m³)Level
Jan2Good
Feb5Good
Mar5Good
Apr10Good
May11Good
Jun42Poor
Jul56Unhealthy
Aug52Poor
Sep39Poor
Oct16Moderate
Nov3Good
Dec1Good
Location & terrain

Where is Ust’-Kut?

Ust’-Kut sits at 56.8°N, 105.8°E, 285 m above sea level, in Russia. The nearest listed city is Zheleznogorsk-Ilimskiy, 104 km away.

Topography around Ust’-Kut

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ust’-Kut.

Within 3 km, the terrain around Ust’-Kut has significant variations in elevation — a maximum elevation change of 406 m around an average of 412 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 492 m; within 80 km, large variations in elevation — a maximum elevation change of 729 m.

The land around Ust’-Kut is covered by trees (72%) and artificial surfaces (21%) within 3 km, trees (93%) within 16 km, and trees (99%) within 80 km.

3 km
406 m
16 km
492 m
80 km
729 m
treesgrasslandartificial surfacesbare terrainwater
October weather nearby: Zheleznogorsk-Ilimskiy 104 km · Ust’-Ilimsk 230 km · Severobaykal’sk 254 km · Bratsk 267 km · Vikhorevka 293 km · Sayansk 375 km · Chunskiy 386 km · Zima 398 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 Ust’-Kut (56.7979°, 105.7866°, elevation 285 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).