Isil’kul’ weather in September

In September, Isil’kul’ sees average daytime highs of 16°C and overnight lows near 6°C, with 39 mm of precipitation across 8.9 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 13°C by the end. The sky is clear or mostly clear about 18% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Isil’kul’'s 6th-clearest and 9th-windiest month. For the whole year in context, see Isil’kul’'s year-round climate.

Daytime high
16°
5th warmest
Overnight low
8th coldest
Precipitation
39 mm
8.9 wet days
Daylight
12 h 24 min
6:56 AM – 7:22 PM
Cloud cover
69%
6th clearest
Wind
13 km/h
9th windiest
Solar energy
2.86 kWh/m²
Travel score
4.7
out of 10

Isil’kul’ is town in Omsk Oblast, Russia.

Density
144/km²
people per km²
Founded
1895

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 19°C in the first days to 13°C by the end.

A typical September day in Isil’kul’ reaches about 16°C in the afternoon and slips back to 6°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 23°C. Set against its neighbours, September runs about 6°C cooler than August and about 8°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1199
2199
3199
4188
5188
6188
7188
8178
9177
10177
11177
12167
13167
14166
15166
16156
17156
18155
19155
20145
21145
22145
23144
24134
25134
26134
27134
28133
29123
30123

How September really feels in Isil’kul’

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.

Isil’kul’ 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-13° / -20°14567.60.0
Feb-10° / -18°134.45.49.30.0
Mar-2° / -11°195.65.311.40.0
Apr / -1°316.82.413.82.1
May18° / 378.20.415.86.0
Jun23° / 12°5310.50176.6
Jul24° / 14°7011.9016.56.7
Aug22° / 12°6510.3014.76.5
Sep16° / 398.9012.54.7
Oct / -0°338.13.310.21.3
Nov-4° / -10°287.86.98.10.0
Dec-10° / -17°216.37.770.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13664
23763
33763
43763
53565
63565
73565
83466
93466
103466
113268
123268
133169
143070
153070
162872
172971
182971
192971
202971
212971
222971
233070
243070
253070
262971
273070
283070
293070
303070

Chance of precipitation in September

Any precipitationSnow

Isil’kul’ gets around 39 mm of rain and snow over 8.9 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 30% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
1330
2320
3320
4320
5320
6320
7320
8320
9320
10320
11330
12330
13320
14320
15320
16320
17320
18310
19300
20300
21290
22290
23280
24271
25271
26261
27261
28262
29252
30252

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19181
29370
39460
49550
59640
69640
79730
89820
99820
109820
119910
129910
139910
1410000
1510000
1610000
1710000
1810000
1910000
2010000
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 36 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 132 minutes over September. Sunrise moves from 6:27 AM to 7:23 AM, and sunset from 8:02 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:278:02
213.56:297:59
313.46:317:57
413.46:337:54
513.36:357:52
613.26:377:49
713.16:397:46
813.06:417:44
913.06:437:41
1012.96:457:38
1112.86:467:36
1212.76:487:33
1312.76:507:30
1412.66:527:28
1512.56:547:25
1612.46:567:22
1712.46:587:20
1812.37:007:17
1912.27:027:14
2012.17:047:12
2112.17:067:09
2212.07:087:06
2311.97:107:04
2411.87:117:01
2511.87:136:58
2611.77:156:56
2711.67:176:53
2811.57:196:51
2911.47:216:48
3011.47:236:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.86 kWh/m².

For context, solar energy here swings from a low near 0.48 kWh/m² to a high of 5.97 kWh/m² in June across the year — September's 2.86 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.4Moderate
63.4Moderate
73.3Moderate
83.3Moderate
93.2Moderate
103.1Moderate
113.1Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.8Moderate
172.7Moderate
182.7Moderate
192.6Moderate
202.6Moderate
212.5Moderate
222.5Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.3Moderate
272.3Moderate
282.2Moderate
292.2Moderate
302.1Moderate
Planning a trip in September

Is September a good time to visit Isil’kul’?

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

4.7
Sightseeing
5th-best month of the year
0.8
Beach & pool
5th-best month of the year

September is a reasonable time to visit Isil’kul’ for sightseeing.

What to pack for Isil’kul’ in September

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

In September, Isil’kul’ sees daytime highs around 16°C and nights near 6°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

UV index in Isil’kul’ 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 Isil’kul’ peaks around June 22 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 22 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Dec 22UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug4Moderate
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Isil’kul’ 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 Isil’kul’ is worst in April — around 16 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (December, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1715 µg/m³Dec 224 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar9Good
Apr16Moderate
May10Good
Jun8Good
Jul13Moderate
Aug8Good
Sep6Good
Oct8Good
Nov7Good
Dec4Good
Location & terrain

Where is Isil’kul’?

Isil’kul’ sits at 54.9°N, 71.3°E, 118 m above sea level, in Russia. The nearest listed city is Omsk, 134 km away.

Topography around Isil’kul’

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

Within 3 km, the terrain around Isil’kul’ has only modest variations in elevation — a maximum elevation change of 22 m around an average of 126 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 100 m.

The land around Isil’kul’ is covered by grassland (36%) and artificial surfaces (27%) within 3 km, cropland (61%) within 16 km, and cropland (49%) and grassland (31%) within 80 km.

3 km
22 m
16 km
43 m
80 km
100 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Omsk 134 km · Petropavl 136 km · Ishim 174 km · Akkol’ 210 km · Kalachinsk 212 km · Kokshetau 219 km · Shchuchinsk 231 km · Makinsk 260 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 Isil’kul’ (54.9121°, 71.2718°, elevation 118 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).