Derbent weather in September

In September, Derbent sees average daytime highs of 23°C and overnight lows near 16°C, with 59 mm of rain across 7 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels humid.

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 Derbent's 4th-clearest and 1st-windiest month. For the whole year in context, see Derbent's year-round climate.

Daytime high
23°
4th warmest
Overnight low
16°
9th coldest
Rainfall
59 mm
7 wet days
Daylight
12 h 18 min
5:33 AM – 5:50 PM
Cloud cover
50%
4th clearest
Wind
8 km/h
1st windiest
Solar energy
3.72 kWh/m²
Travel score
7.3
out of 10

Derbent is city in Dagestan, Russia.

Density
1,522/km²
people per km²
Founded
~438 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 25°C in the first days to 21°C by the end.

A typical September day in Derbent reaches about 23°C in the afternoon and slips back to 16°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 27°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12618
22618
32518
42518
52518
62517
72517
82417
92417
102417
112417
122416
132316
142316
152316
162316
172316
182215
192215
202215
212215
222215
232215
242114
252114
262114
272114
282114
292014
302013

How September really feels in Derbent

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.

Derbent weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°2774.79.30.0
Feb / -1°337.25.210.30.1
Mar / 337.21.811.71.7
Apr13° / 265.90.213.14.1
May20° / 12°317014.36.6
Jun25° / 17°2850157.7
Jul28° / 20°233.9014.77.4
Aug28° / 20°335.2013.77.1
Sep23° / 16°597012.37.3
Oct17° / 11°487.9010.85.6
Nov10° / 4381.19.62.5
Dec / 3173.290.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% 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 42%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
27030
36832
46733
56733
66535
76535
86337
96337
106139
116139
126040
135941
145842
155743
165644
175644
185446
195446
205347
215347
225248
235149
245149
255050
265050
275050
284951
294951
304951

Chance of precipitation in September

Any precipitation

Derbent gets around 59 mm of rain over 7 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 23% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
120
221
321
421
521
622
722
822
922
1023
1123
1223
1323
1423
1523
1623
1724
1824
1924
2024
2124
2224
2324
2424
2525
2625
2725
2826
2926
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172040285
282140265
392140254
4102240244
5112341233
6122441213
7132441202
8132541192
9142641172
10152741161
11152840151
12163040141
13173139131
14173239121
15183338110
16193437100
1720353790
1821353680
1922363570
2023363460
2125363360
2227363250
2329363050
2431362940
2532362840
2634362630
2736352530
2839352430
2941352220
3043342120

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 5:17 AM to 5:48 AM, and sunset from 6:16 PM to 5:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:176:16
212.95:186:15
312.95:196:13
412.95:206:11
512.85:216:09
612.85:226:08
712.75:236:06
812.75:246:04
912.65:256:02
1012.65:266:00
1112.55:275:59
1212.55:285:57
1312.45:305:55
1412.45:315:53
1512.35:325:51
1612.35:335:50
1712.25:345:48
1812.25:355:46
1912.15:365:44
2012.15:375:42
2112.05:385:40
2212.05:395:39
2311.95:405:37
2411.95:425:35
2511.85:435:33
2611.85:445:31
2711.75:455:30
2811.75:465:28
2911.65:475:26
3011.65:485:24

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.72 kWh/m².

For context, solar energy here swings from a low near 1.44 kWh/m² to a high of 6.04 kWh/m² in July across the year — September's 3.72 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.3Bright
44.3Bright
54.2Bright
64.2Bright
74.1Bright
84.1Bright
94.0Bright
104.0Moderate
113.9Moderate
123.9Moderate
133.8Moderate
143.8Moderate
153.7Moderate
163.7Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.4Moderate
233.4Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.2Moderate
283.2Moderate
293.2Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Derbent?

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

7.3
Sightseeing
3rd-best month of the year
5.5
Beach & pool
4th-best month of the year

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

What to pack for Derbent in September

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

In September, Derbent sees daytime highs around 23°C and nights near 16°C. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Derbent in September

The nearest coast averages about 23°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 26°C and coldest in February near 7°C.

It's comfortable for a long swim from Jun 13 to Oct 6 — about 3.8 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar7Bracing
Apr9Bracing
May15Bracing
Jun21Refreshing
Jul25Warm
Aug26Warm
Sep23Refreshing
Oct19Cool
Nov14Bracing
Dec10Bracing

UV index in Derbent 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 Derbent peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 17UV 9Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5Moderate
May7Very high
Jun8Very high
Jul9Very high
Aug8Very high
Sep4Moderate
Oct4Moderate
Nov2Low
Dec2Low

Air quality in Derbent 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 Derbent is worst in March — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 2216 µg/m³Dec 208 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar16Moderate
Apr16Moderate
May14Moderate
Jun12Moderate
Jul13Moderate
Aug14Moderate
Sep15Moderate
Oct13Moderate
Nov10Good
Dec8Good
Location & terrain

Where is Derbent?

Derbent sits at 42.1°N, 48.3°E, -13 m above sea level, in Russia. The nearest listed city is Dagestanskiye Ogni, 10 km away.

Topography around Derbent

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

Within 3 km, the terrain around Derbent has significant variations in elevation — a maximum elevation change of 522 m around an average of 49 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 736 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,791 m.

The land around Derbent is covered by artificial surfaces (40%) and water (24%) within 3 km, water (47%) and grassland (25%) within 16 km, and water (47%) and grassland (30%) within 80 km.

3 km
522 m
16 km
736 m
80 km
3,791 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Dagestanskiye Ogni 10 km · Belidzhi 22 km · Izberbash 65 km · Qusar 72 km · Xaçmaz 80 km · Quba 81 km · Kaspiysk 105 km · Divichibazar 112 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 Derbent (42.0662°, 48.2876°, elevation -13 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).