Kupyansk weather in September

In September, Kupyansk sees average daytime highs of 20°C and overnight lows near 10°C, with 45 mm of rain across 7.5 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 18°C by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Kupyansk's 3rd-clearest and 8th-windiest month. For the whole year in context, see Kupyansk's year-round climate.

Daytime high
20°
5th warmest
Overnight low
10°
8th coldest
Rainfall
45 mm
7.5 wet days
Daylight
12 h 24 min
5:13 AM – 5:35 PM
Cloud cover
55%
3rd clearest
Wind
13 km/h
8th windiest
Solar energy
3.55 kWh/m²
Travel score
6.7
out of 10

Kupyansk is town in Kharkiv Oblast in eastern Ukraine.

Density
813/km²
people per km²
Founded
1655

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 23°C in the first days to 18°C by the end.

A typical September day in Kupyansk reaches about 20°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 27°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)
12412
22412
32312
42312
52312
62312
72211
82211
92211
102211
112211
122110
132110
142110
152110
162010
17209
18209
19209
20199
21199
22199
23198
24188
25188
26188
27188
28188
29177
30177

How September really feels in Kupyansk

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.

Kupyansk 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-2° / -7°429.38.28.40.0
Feb-1° / -7°368.16.99.80.0
Mar / -2°429.5511.50.4
Apr14° / 4390.613.44.3
May21° / 10°5310015.16.6
Jun25° / 15°609.70166.9
Jul27° / 17°539.1015.76.7
Aug27° / 15°376.4014.27.2
Sep20° / 10°457.5012.46.7
Oct13° / 447.90.610.53.5
Nov / -1°407.83.38.80.2
Dec-1° / -5°459.16.780.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25545
35545
45644
55545
65545
75545
85545
95644
105545
115545
125545
135644
145545
155545
165446
175446
185347
195248
205149
215050
224951
234852
244852
254753
264753
274654
284555
294555
304456

Chance of precipitation in September

Any precipitation

Kupyansk gets around 45 mm of rain over 7.5 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
326
426
525
625
725
824
924
1024
1124
1224
1324
1424
1524
1624
1725
1825
1925
2026
2126
2226
2326
2427
2527
2627
2726
2826
2926
3026

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 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
180164
281154
382153
483143
584133
686122
786122
887112
989101
1089101
119091
129181
139370
149370
159460
169460
179460
189550
199550
209550
219550
229451
239451
249451
259451
269451
279451
289451
299451
309451

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 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
112light breeze
212light 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
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over September. Sunrise moves from 4:50 AM to 5:35 AM, and sunset from 6:08 PM to 5:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.34:506:08
213.24:526:06
313.24:536:04
413.14:556:02
513.14:566:00
613.04:585:57
712.94:595:55
812.95:015:53
912.85:025:51
1012.75:045:48
1112.75:055:46
1212.65:075:44
1312.65:085:42
1412.55:105:39
1512.45:115:37
1612.45:135:35
1712.35:145:33
1812.25:165:30
1912.25:185:28
2012.15:195:26
2112.05:215:23
2212.05:225:21
2311.95:245:19
2411.95:255:17
2511.85:275:14
2611.75:285:12
2711.75:305:10
2811.65:315:08
2911.55:335:05
3011.55:355:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.55 kWh/m².

For context, solar energy here swings from a low near 0.65 kWh/m² to a high of 6.01 kWh/m² in June across the year — September's 3.55 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.2Bright
34.2Bright
44.1Bright
54.1Bright
64.0Bright
74.0Moderate
83.9Moderate
93.9Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.7Moderate
143.6Moderate
153.6Moderate
163.5Moderate
173.5Moderate
183.4Moderate
193.4Moderate
203.3Moderate
213.3Moderate
223.2Moderate
233.2Moderate
243.1Moderate
253.0Moderate
263.0Moderate
272.9Moderate
282.9Moderate
292.8Moderate
302.8Moderate
Planning a trip in September

Is September a good time to visit Kupyansk?

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

6.7
Sightseeing
3rd-best month of the year
3.8
Beach & pool
5th-best month of the year

September is a reasonable time to visit Kupyansk for sightseeing.

What to pack for Kupyansk in September

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

In September, Kupyansk sees daytime highs around 20°C and nights near 10°C. Little to plan around — just the basics. About 8 days see rain.

UV index in Kupyansk in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kupyansk peaks around June 21 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJun 21UV 7Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr5Moderate
May5Moderate
Jun8Very high
Jul7High
Aug5High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Kupyansk 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 Kupyansk is worst in March — around 15 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodMar 1815 µg/m³Dec 207 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar15Moderate
Apr11Good
May8Good
Jun10Good
Jul13Moderate
Aug11Good
Sep8Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is Kupyansk?

Kupyansk sits at 49.7°N, 37.6°E, 79 m above sea level, in Ukraine. The nearest listed city is Kivsharivka, 10 km away.

SlobozhanskeVovchansk

Topography around Kupyansk

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

Within 3 km, the terrain around Kupyansk has only modest variations in elevation — a maximum elevation change of 114 m around an average of 100 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 147 m; within 80 km, only modest variations in elevation — a maximum elevation change of 197 m.

The land around Kupyansk is covered by trees (50%) and artificial surfaces (22%) within 3 km, cropland (49%) and trees (29%) within 16 km, and cropland (64%) within 80 km.

3 km
114 m
16 km
147 m
80 km
197 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Kivsharivka 10 km · Svatove 51 km · Izyum 61 km · Balakliya 62 km · Valuyki 65 km · Chuhuyiv 68 km · Slobozhanske 80 km · Vovchansk 81 km

Ukraine travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$5,866
2025
Happiness
4.7 / 10
World Happiness, 2025
Safe drinking water
88%
of population, 2024
Homicide rate
3.8
per 100k, 2021
Road deaths
10.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 526

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 Kupyansk (49.71°, 37.6158°, elevation 79 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).