Ismayilli weather in September

In September, Ismayilli sees average daytime highs of 21°C and overnight lows near 13°C, with 71 mm of rain across 7.8 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 19°C by the end. The sky is clear or mostly clear about 58% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Ismayilli's 3rd-clearest and 12th-windiest month. For the whole year in context, see Ismayilli's year-round climate.

Daytime high
21°
4th warmest
Overnight low
13°
9th coldest
Rainfall
71 mm
7.8 wet days
Daylight
12 h 18 min
6:34 AM – 6:50 PM
Cloud cover
39%
3rd clearest
Wind
5 km/h
12th windiest
Solar energy
4.26 kWh/m²
Travel score
7.2
out of 10

Ismayilli is city in Azerbaijan.

Founded
1931

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 24°C in the first days to 19°C by the end.

A typical September day in Ismayilli reaches about 21°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12415
22415
32415
42415
52414
62314
72314
82314
92314
102314
112213
122213
132213
142213
152213
162113
172112
182112
192112
202012
212012
222011
232011
242011
251911
261911
271911
281910
291910
301810

How September really feels in Ismayilli

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.

Ismayilli weather by month

How September compares with the rest of the year at a glance. September is the 4th-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°427.87.49.40.0
Feb / -3°589.98.810.40.0
Mar / 7811.58.711.70.8
Apr13° / 78122.913.13.3
May19° / 70110.214.25.9
Jun24° / 14°547.5014.97.6
Jul27° / 17°356014.67.7
Aug27° / 17°385.5013.67.8
Sep21° / 13°717.8012.37.2
Oct15° / 7910.11.310.94.8
Nov / 74105.79.71.5
Dec / -3°438.36.49.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 58% 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 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27921
37921
47921
57723
67723
77723
87624
97525
107525
117525
127327
137327
147327
157327
167129
177129
187129
197030
207030
216931
226832
236733
246733
256634
266634
276535
286535
296436
306337

Chance of precipitation in September

Any precipitation

Ismayilli gets around 71 mm of rain over 7.8 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 26% and peaks near 32% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
122
222
322
422
522
622
723
823
923
1024
1124
1224
1324
1425
1525
1626
1726
1827
1927
2028
2128
2228
2329
2429
2529
2630
2730
2831
2931
3032

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
156377
257367
360346
461336
563325
665314
766304
868293
970282
1071272
1172262
1274251
1375241
1476231
1576231
1677221
1778211
1880200
1981190
2082180
2183170
2284160
2385150
2487130
2588120
2689110
2790100
289190
299280
309370

Wind in September

Winds average 5 km/h in September, the calmest month.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 6:19 AM to 6:48 AM, and sunset from 7:16 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:197:16
212.96:207:14
312.96:217:12
412.86:227:11
512.86:237:09
612.76:247:07
712.76:257:05
812.66:267:04
912.66:277:02
1012.56:287:00
1112.56:296:58
1212.56:306:57
1312.46:316:55
1412.46:326:53
1512.36:336:51
1612.36:346:50
1712.26:356:48
1812.26:366:46
1912.16:376:44
2012.16:386:43
2112.06:396:41
2212.06:406:39
2311.96:416:37
2411.96:426:36
2511.86:436:34
2611.86:446:32
2711.86:456:30
2811.76:466:29
2911.76:476:27
3011.66:486:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.26 kWh/m².

For context, solar energy here swings from a low near 1.96 kWh/m² to a high of 6.36 kWh/m² in July across the year — September's 4.26 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Ismayilli?

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

7.2
Sightseeing
4th-best month of the year
4.7
Beach & pool
4th-best month of the year

September is one of the better times to visit Ismayilli for general sightseeing.

What to pack for Ismayilli in September

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

In September, Ismayilli sees daytime highs around 21°C and nights near 13°C. Little to plan around — just the basics. About 8 days see rain.

UV index in Ismayilli in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ismayilli peaks around July 17 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 17UV 10Dec 18UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Ismayilli 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 Ismayilli is worst in September — around 22 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1122 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr18Moderate
May19Moderate
Jun17Moderate
Jul20Moderate
Aug21Moderate
Sep22Moderate
Oct16Moderate
Nov12Good
Dec10Good
Location & terrain

Where is Ismayilli?

Ismayilli sits at 40.8°N, 48.2°E, 579 m above sea level, in Azerbaijan. The nearest listed city is Aghsu, 32 km away.

AghsuQabalaGöyçayShemakhaKyurdarmirUjarAğdaşQuba

Topography around Ismayilli

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

Within 3 km, the terrain around Ismayilli has only modest variations in elevation — a maximum elevation change of 191 m around an average of 607 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,090 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,438 m.

The land around Ismayilli is covered by cropland (40%), trees (26%) and artificial surfaces (21%) within 3 km, trees (52%) and cropland (23%) within 16 km, and grassland (36%), cropland (28%) and trees (20%) within 80 km.

3 km
191 m
16 km
2,090 m
80 km
4,438 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Aghsu 32 km · Qabala 34 km · Göyçay 38 km · Shemakha 45 km · Kyurdarmir 49 km · Ujar 51 km · Ağdaş 59 km · Quba 71 km

Azerbaijan travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 28% of US
price level, 2025
GDP per capita
$7,411
2025
Happiness
5.0 / 10
World Happiness, 2025
Safe drinking water
58%
of population, 2024
Homicide rate
2.2
per 100k, 2023
Road deaths
6.7
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 454
Religion
Muslim 97%Christian 3%

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 Ismayilli (40.7848°, 48.1514°, elevation 579 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).