Smolensk weather in September

In September, Smolensk sees average daytime highs of 16°C and overnight lows near 8°C, with 60 mm of precipitation across 9.5 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 6th-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 16% 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 Smolensk's 6th-clearest and 8th-windiest month. For the whole year in context, see Smolensk's year-round climate.

Daytime high
16°
5th warmest
Overnight low
9th coldest
Precipitation
60 mm
9.5 wet days
Daylight
12 h 24 min
6:33 AM – 6:59 PM
Cloud cover
71%
6th clearest
Wind
12 km/h
8th windiest
Solar energy
2.72 kWh/m²
Travel score
4.9
out of 10

Smolensk is city and administrative center of Smolensk Oblast in central Russia.

Density
1,984/km²
people per km²
Founded
~863 CE

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 Smolensk reaches about 16°C in the afternoon and slips back to 8°C overnight — a 9°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 7°C warmer than October.

10°20°151015202530
Avg high (°C)Avg low (°C)
11910
21910
31910
41910
5189
6189
7189
8189
9189
10179
11178
12178
13178
14168
15168
16167
17167
18167
19157
20157
21156
22156
23156
24146
25146
26146
27146
28135
29135
30135

How September really feels in Smolensk

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Smolensk weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -8°4210.5117.60.0
Feb-3° / -8°399.79.99.30.0
Mar / -4°389.16.511.50.0
Apr11° / 429.41.613.72.6
May18° / 7412.30.115.85.3
Jun21° / 11°8013016.95.9
Jul23° / 14°9313.5016.56.3
Aug22° / 12°7411.7014.76.3
Sep16° / 609.50.112.54.9
Oct / 6411.31.710.21.7
Nov / -2°481058.20.0
Dec-2° / -6°4110.69.87.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13268
23268
33169
43070
53169
63169
72971
82971
92971
102971
112971
122971
132971
142872
152872
163070
173070
182971
192971
202971
212971
222971
232971
242971
252872
262872
272872
282872
292773
302674

Chance of precipitation in September

Any precipitation

Smolensk gets around 60 mm of rain and snow over 9.5 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 32% and peaks near 36% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
235
335
434
534
633
733
833
932
1032
1132
1232
1332
1432
1531
1631
1731
1831
1931
2031
2131
2231
2331
2432
2532
2632
2732
2833
2933
3034

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
181172
282162
382162
484151
585141
685141
786131
887121
987121
1088111
1189101
129091
139091
149280
159370
169460
179550
189550
199640
209640
219730
229730
239820
249820
259820
269820
279820
289820
299820
309820

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
512calm
612calm
712calm
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light 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 6:04 AM to 7:00 AM, and sunset from 7:39 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.66:047:39
213.56:067:36
313.46:087:33
413.36:107:31
513.36:127:28
613.26:147:26
713.16:167:23
813.06:187:20
913.06:207:18
1012.96:227:15
1112.86:237:13
1212.76:257:10
1312.76:277:07
1412.66:297:05
1512.56:317:02
1612.46:336:59
1712.46:356:57
1812.36:376:54
1912.26:396:51
2012.16:416:49
2112.16:436:46
2212.06:446:43
2311.96:466:41
2411.86:486:38
2511.86:506:35
2611.76:526:33
2711.66:546:30
2811.56:566:27
2911.46:586:25
3011.47:006:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.72 kWh/m².

For context, solar energy here swings from a low near 0.37 kWh/m² to a high of 5.48 kWh/m² in June across the year — September's 2.72 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.4Moderate
23.3Moderate
33.3Moderate
43.2Moderate
53.2Moderate
63.1Moderate
73.1Moderate
83.0Moderate
93.0Moderate
103.0Moderate
112.9Moderate
122.9Moderate
132.8Moderate
142.8Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.6Moderate
192.6Moderate
202.5Moderate
212.5Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.3Moderate
262.3Moderate
272.2Moderate
282.1Moderate
292.1Moderate
302.0Moderate
Planning a trip in September

Is September a good time to visit Smolensk?

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
1.0
Beach & pool
5th-best month of the year

September is a reasonable time to visit Smolensk for sightseeing.

What to pack for Smolensk in September

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

In September, Smolensk sees daytime highs around 16°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Smolensk 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 Smolensk peaks around July 12 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 12UV 6Dec 18UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5Moderate
Jun6High
Jul6High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Smolensk 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 Smolensk is worst in April — around 18 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (January, 4 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1317 µg/m³Jan 114 µg/m³
PM2.5 (µg/m³)Level
Jan4Good
Feb5Good
Mar15Moderate
Apr18Moderate
May10Good
Jun10Good
Jul12Good
Aug10Good
Sep8Good
Oct6Good
Nov5Good
Dec4Good
Location & terrain

Where is Smolensk?

Smolensk sits at 54.8°N, 32.1°E, 238 m above sea level, in Russia. The nearest listed city is Yartsevo, 52 km away.

Topography around Smolensk

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

Within 3 km, the terrain around Smolensk has only modest variations in elevation — a maximum elevation change of 102 m around an average of 225 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 120 m; within 80 km, only modest variations in elevation — a maximum elevation change of 153 m.

The land around Smolensk is covered by artificial surfaces (51%) and trees (41%) within 3 km, trees (45%) and grassland (30%) within 16 km, and trees (59%) and grassland (26%) within 80 km.

3 km
102 m
16 km
120 m
80 km
153 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Yartsevo 52 km · Safonovo 84 km · Horki 88 km · Roslavl’ 106 km · Desnogorsk 106 km · Orsha 110 km · Krychaw 120 km · Vitebsk 126 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 Smolensk (54.7783°, 32.0509°, elevation 238 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).