Kozel’sk weather in September

In September, Kozel’sk sees average daytime highs of 17°C and overnight lows near 8°C, with 61 mm of precipitation across 9.7 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 14°C by the end. The sky is clear or mostly clear about 19% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Kozel’sk's 6th-clearest and 8th-windiest month. For the whole year in context, see Kozel’sk's year-round climate.

Daytime high
17°
5th warmest
Overnight low
8th coldest
Precipitation
61 mm
9.7 wet days
Daylight
12 h 24 min
6:18 AM – 6:44 PM
Cloud cover
69%
6th clearest
Wind
13 km/h
8th windiest
Solar energy
2.79 kWh/m²
Travel score
5.1
out of 10

Kozel’sk is human settlement in Kozelsky District, Kaluga Oblast, Russia.

Density
1,950/km²
people per km²
Founded
1200

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 14°C by the end.

A typical September day in Kozel’sk reaches about 17°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 23°C. Set against its neighbours, September runs about 6°C cooler than August and about 7°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12010
21910
31910
41910
51910
6199
7189
8189
9189
10189
11188
12178
13178
14178
15178
16167
17167
18167
19167
20167
21156
22156
23156
24156
25156
26146
27146
28145
29145
30135

How September really feels in Kozel’sk

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.

Kozel’sk weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-4° / -9°359.2107.70.0
Feb-3° / -9°338.799.40.0
Mar / -5°368.46.811.50.0
Apr11° / 409.61.713.72.8
May18° / 6311.40.115.75.7
Jun22° / 12°7112.1016.86.1
Jul24° / 14°8613.7016.36.4
Aug22° / 12°6710.7014.66.7
Sep17° / 619.70.212.55.1
Oct / 5710.51.110.21.9
Nov / -3°448.858.30.0
Dec-3° / -7°4110.29.57.20.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 68%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23466
33466
43466
53367
63367
73367
83367
93169
103268
113268
123268
133268
143367
153367
163466
173367
183367
193367
203268
213268
223268
233169
243169
253169
263169
273070
282971
292971
302872

Chance of precipitation in September

Any precipitationSnow

Kozel’sk gets around 61 mm of rain and snow over 9.7 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 37% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1360
2370
3370
4370
5360
6360
7360
8350
9350
10350
11340
12330
13330
14320
15310
16310
17300
18300
19290
20291
21291
22291
23291
24291
25301
26301
27302
28302
29312
30312

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 (%)
179192
280182
380182
482171
583161
684151
785141
886131
987121
1088111
1190100
129190
139280
149370
159550
169550
179640
189730
199820
209820
219820
229910
239910
249910
259910
269910
279910
289910
299910
309910

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 14 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
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 30 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 126 minutes over September. Sunrise moves from 5:51 AM to 6:45 AM, and sunset from 7:22 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:517:22
213.55:537:20
313.45:557:17
413.35:567:15
513.25:587:12
613.26:007:10
713.16:027:07
813.06:047:05
912.96:067:02
1012.96:077:00
1112.86:096:57
1212.76:116:54
1312.66:136:52
1412.66:156:49
1512.56:176:47
1612.46:186:44
1712.46:206:41
1812.36:226:39
1912.26:246:36
2012.16:266:34
2112.16:286:31
2212.06:306:28
2311.96:316:26
2411.86:336:23
2511.86:356:21
2611.76:376:18
2711.66:396:16
2811.56:416:13
2911.56:436:10
3011.46:456:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.79 kWh/m².

For context, solar energy here swings from a low near 0.44 kWh/m² to a high of 5.61 kWh/m² in June across the year — September's 2.79 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.4Moderate
43.3Moderate
53.3Moderate
63.2Moderate
73.2Moderate
83.1Moderate
93.1Moderate
103.0Moderate
113.0Moderate
122.9Moderate
132.9Moderate
142.9Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.7Moderate
192.7Moderate
202.6Moderate
212.6Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.4Moderate
262.4Moderate
272.3Moderate
282.3Moderate
292.2Moderate
302.2Moderate
Planning a trip in September

Is September a good time to visit Kozel’sk?

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

5.1
Sightseeing
5th-best month of the year
1.2
Beach & pool
5th-best month of the year

September is a reasonable time to visit Kozel’sk for sightseeing.

What to pack for Kozel’sk in September

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

In September, Kozel’sk sees daytime highs around 17°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 Kozel’sk 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 Kozel’sk peaks around July 13 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 13UV 6Dec 18UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr4Moderate
May4Moderate
Jun6High
Jul6High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Kozel’sk?

Kozel’sk sits at 54.0°N, 35.8°E, 164 m above sea level, in Russia. The nearest listed city is Sukhinichi, 29 km away.

Topography around Kozel’sk

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

Within 3 km, the terrain around Kozel’sk has only modest variations in elevation — a maximum elevation change of 65 m around an average of 160 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 151 m; within 80 km, only modest variations in elevation — a maximum elevation change of 200 m.

The land around Kozel’sk is covered by grassland (32%), trees (29%) and cropland (28%) within 3 km, trees (51%), grassland (26%) and cropland (22%) within 16 km, and trees (58%), grassland (21%) and cropland (20%) within 80 km.

3 km
65 m
16 km
151 m
80 km
200 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sukhinichi 29 km · Belëv 34 km · Suvorov 48 km · Kaluga 64 km · Lyudinovo 89 km · Kirov 96 km · Aleksin 99 km · Mtsensk 100 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 Kozel’sk (54.0366°, 35.7709°, elevation 164 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).