Dubrovnik weather in September

In September, Dubrovnik sees average daytime highs of 23°C and overnight lows near 16°C, with 139 mm of rain across 9.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 55% 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 Dubrovnik's 4th-clearest and 8th-windiest month. For the whole year in context, see Dubrovnik's year-round climate.

Daytime high
23°
4th warmest
Overnight low
16°
9th coldest
Rainfall
139 mm
9.1 wet days
Daylight
12 h 18 min
5:33 AM – 5:50 PM
Cloud cover
40%
4th clearest
Wind
10 km/h
8th windiest
Solar energy
4.69 kWh/m²
Travel score
7.3
out of 10

Dubrovnik is city and settlement in Dubrovnik-Neretva County, Croatia.

Density
2,225/km²
people per km²
Founded
~700 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 22°C by the end.

A typical September day in Dubrovnik 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 20°C and 27°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12618
22618
32518
42518
52518
62518
72518
82517
92417
102417
112417
122417
132417
142417
152417
162316
172316
182316
192316
202316
212316
222216
232216
242215
252215
262215
272215
282215
292115
302115

Dubrovnik weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 150111.19.22.0
Feb10° / 14410.91.410.32.3
Mar13° / 13211.40.911.63.6
Apr16° / 10°13412.60.213.14.8
May20° / 14°9210.3014.46.5
Jun25° / 17°627.8015.17.6
Jul28° / 20°405.7014.87.6
Aug28° / 20°536013.77.3
Sep23° / 16°1399.1012.37.3
Oct19° / 13°19411010.86.2
Nov15° / 24113.70.19.64.0
Dec10° / 195130.58.92.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% 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 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
27822
37723
47723
57624
67624
77426
87426
97426
107327
117327
127129
137129
147030
156931
166931
176832
186832
196832
206733
216733
226634
236634
246535
256634
266535
276535
286535
296436
306436

Chance of precipitation in September

Any precipitation

Dubrovnik gets around 139 mm of rain over 9.1 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 30% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
127
227
328
428
529
629
729
830
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1930
2031
2131
2231
2331
2431
2532
2632
2733
2833
2934
3035

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
119204515
220214414
322224313
423234312
523244211
62425419
72526418
82527407
92528407
102630396
112631385
122632385
132732374
142733364
152834353
162835343
172935333
183036322
193136312
203336292
213436282
223535272
233735262
243835252
253935242
264036231
274036221
284136211
294237201
304238201

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:49 AM, and sunset from 6:18 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:176:18
213.05:186:16
312.95:196:14
412.95:206:12
512.85:216:11
612.85:226:09
712.75:236:07
812.75:256:05
912.65:266:03
1012.65:276:02
1112.55:286:00
1212.55:295:58
1312.45:305:56
1412.45:315:54
1512.35:325:52
1612.35:335:50
1712.25:345:49
1812.25:365:47
1912.15:375:45
2012.15:385:43
2112.05:395:41
2212.05:405:39
2311.95:415:37
2411.95:425:36
2511.85:435:34
2611.85:455:32
2711.75:465:30
2811.75:475:28
2911.65:485:26
3011.65:495:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.69 kWh/m².

For context, solar energy here swings from a low near 1.53 kWh/m² to a high of 7.08 kWh/m² in July across the year — September's 4.69 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.3Bright
234.3Bright
244.2Bright
254.2Bright
264.1Bright
274.1Bright
284.0Bright
294.0Moderate
303.9Moderate
Planning a trip in September

Is September a good time to visit Dubrovnik?

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
5.8
Beach & pool
4th-best month of the year

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

What to pack for Dubrovnik in September

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

In September, Dubrovnik sees daytime highs around 23°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Dubrovnik in September

The nearest coast averages about 24°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 14°C.

It's comfortable for a long swim from May 28 to Oct 28 — about 5.1 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May19Cool
Jun23Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Dubrovnik 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 Dubrovnik peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 9Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Dubrovnik?

Dubrovnik sits at 42.6°N, 18.1°E, 9 m above sea level, in Croatia. The nearest listed city is Trebinje, 21 km away.

Herceg NoviNeumPerastTivatKotorNikšićMeđugorje

Topography around Dubrovnik

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

Within 3 km, the terrain around Dubrovnik has significant variations in elevation — a maximum elevation change of 406 m around an average of 100 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 901 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,966 m.

The land around Dubrovnik is covered by water (46%) and trees (28%) within 3 km, water (51%) and trees (27%) within 16 km, and trees (36%) and water (36%) within 80 km.

3 km
406 m
16 km
901 m
80 km
1,966 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Trebinje 21 km · Herceg Novi 41 km · Neum 51 km · Perast 51 km · Tivat 53 km · Kotor 59 km · Nikšić 70 km · Međugorje 71 km

Croatia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$27,104
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
87%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
7.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 617
Religion
Roman Catholic 79%other Christian 5%none or atheist 5%Orthodox 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 Dubrovnik (42.6412°, 18.1091°, elevation 9 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).