Aleysk weather in September

In September, Aleysk sees average daytime highs of 18°C and overnight lows near 6°C, with 38 mm of precipitation across 8.3 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 15°C by the end. The sky is clear or mostly clear about 29% 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 Aleysk's 5th-clearest and 9th-windiest month. For the whole year in context, see Aleysk's year-round climate.

Daytime high
18°
5th warmest
Overnight low
8th coldest
Precipitation
38 mm
8.3 wet days
Daylight
12 h 24 min
6:11 AM – 6:35 PM
Cloud cover
59%
5th clearest
Wind
12 km/h
9th windiest
Solar energy
3.52 kWh/m²
Travel score
5.8
out of 10

Aleysk is human settlement in City of Aleysk, Altai Krai, Russia.

Founded
1913

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 21°C in the first days to 15°C by the end.

A typical September day in Aleysk reaches about 18°C in the afternoon and slips back to 6°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 25°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)
1219
2219
3218
4218
5218
6208
7208
8207
9207
10197
11197
12197
13196
14186
15186
16186
17175
18175
19175
20175
21165
22164
23164
24164
25154
26154
27153
28153
29143
30143

How September really feels in Aleysk

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 3 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
3
wind chill below the day's low

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

Aleysk weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-11° / -20°226.68.280.0
Feb-8° / -18°205.66.59.50.0
Mar / -11°266.76.311.50.0
Apr12° / -0°377.52.213.63.2
May20° / 478.80.415.56.4
Jun25° / 13°5410.1016.56.8
Jul26° / 15°7112.3016.16.4
Aug24° / 12°438.6014.57.1
Sep18° / 388.30.112.45.8
Oct10° / -0°408.92.910.32.1
Nov-2° / -9°469.98.88.50.0
Dec-9° / -17°369.611.17.50.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25050
34951
44951
54951
64951
74852
84852
94753
104753
114654
124654
134654
144654
154456
164456
174258
184258
194258
204159
214159
224060
234060
244159
254060
264060
274060
284060
294060
304060

Chance of precipitation in September

Any precipitationSnow

Aleysk gets around 38 mm of rain and snow over 8.3 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 28% and peaks near 30% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202530
Rain chance (%)Snow chance (%)
1300
2290
3290
4280
5280
6280
7270
8270
9270
10270
11270
12270
13270
14280
15280
16280
17280
18290
19291
20291
21291
22291
23281
24281
25281
26281
27271
28271
29271
30272

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 (%)
1955
2955
3964
4964
5964
6973
7973
8982
9982
10982
11991
12991
13991
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light 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 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 5:45 AM to 6:36 AM, and sunset from 7:12 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:457:12
213.45:477:09
313.35:497:07
413.25:507:05
513.25:527:02
613.15:547:00
713.05:566:57
813.05:576:55
912.95:596:53
1012.86:016:50
1112.86:036:48
1212.76:046:45
1312.66:066:43
1412.56:086:40
1512.56:096:38
1612.46:116:35
1712.36:136:33
1812.36:156:30
1912.26:166:28
2012.16:186:25
2112.16:206:23
2212.06:226:20
2311.96:236:18
2411.86:256:16
2511.86:276:13
2611.76:296:11
2711.66:306:08
2811.66:326:06
2911.56:346:03
3011.46:366:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.52 kWh/m².

For context, solar energy here swings from a low near 0.75 kWh/m² to a high of 6.37 kWh/m² in June across the year — September's 3.52 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
113.8Moderate
123.7Moderate
133.7Moderate
143.6Moderate
153.6Moderate
163.5Moderate
173.4Moderate
183.4Moderate
193.3Moderate
203.3Moderate
213.2Moderate
223.1Moderate
233.1Moderate
243.0Moderate
253.0Moderate
262.9Moderate
272.8Moderate
282.8Moderate
292.7Moderate
302.7Moderate
Planning a trip in September

Is September a good time to visit Aleysk?

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
2.0
Beach & pool
5th-best month of the year

September is a reasonable time to visit Aleysk for sightseeing.

What to pack for Aleysk in September

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

In September, Aleysk sees daytime highs around 18°C and nights near 6°C. Worth packing: a warm layer and rain gear. About 8 days see rain.

a warm layerrain gear

UV index in Aleysk 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 Aleysk peaks around July 18 at about 6 (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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 18UV 6Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Aleysk 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 Aleysk is worst in April — around 16 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (December, 5 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodGoodApr 1415 µg/m³Dec 166 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar12Good
Apr16Moderate
May9Good
Jun8Good
Jul13Moderate
Aug9Good
Sep7Good
Oct9Good
Nov8Good
Dec5Good
Location & terrain

Where is Aleysk?

Aleysk sits at 52.5°N, 82.8°E, 180 m above sea level, in Russia. The nearest listed city is Yuzhnyy, 104 km away.

Topography around Aleysk

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

Within 3 km, the terrain around Aleysk has only modest variations in elevation — a maximum elevation change of 56 m around an average of 173 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 122 m; within 80 km, significant variations in elevation — a maximum elevation change of 433 m.

The land around Aleysk is covered by grassland (48%), artificial surfaces (23%) and trees (20%) within 3 km, cropland (61%) and grassland (29%) within 16 km, and cropland (56%) and grassland (27%) within 80 km.

3 km
56 m
16 km
122 m
80 km
433 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Yuzhnyy 104 km · Novosilikatnyy 107 km · Barnaul 116 km · Novoaltaysk 129 km · Suzun 146 km · Rubtsovsk 153 km · Tal’menka 157 km · Biysk 164 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 Aleysk (52.4963°, 82.7747°, elevation 180 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).