Kotor weather in September

In September, Kotor sees average daytime highs of 22°C and overnight lows near 14°C, with 212 mm of rain across 11.2 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 24°C in the first days to 20°C by the end. The sky is clear or mostly clear about 48% 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 Kotor's 4th-clearest and 9th-windiest month. For the whole year in context, see Kotor's year-round climate.

Daytime high
22°
4th warmest
Overnight low
14°
9th coldest
Rainfall
212 mm
11.2 wet days
Daylight
12 h 18 min
5:31 AM – 5:48 PM
Cloud cover
46%
4th clearest
Wind
6 km/h
9th windiest
Solar energy
4.4 kWh/m²
Travel score
6.6
out of 10

Kotor is town in Montenegro.

Density
16/km²
people per km²
Founded
~450 BCE

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 20°C by the end.

A typical September day in Kotor reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, September runs about 5°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12416
22416
32416
42416
52415
62315
72315
82315
92315
102315
112215
122214
132214
142214
152214
162214
172114
182114
192114
202113
212113
222113
232013
242013
252013
262013
272012
282012
292012
302012

How September really feels in Kotor

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.

Kotor 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 / 229135.59.30.8
Feb / 22312.75.410.31.3
Mar11° / 20712.73.811.62.7
Apr15° / 18114.5113.14.0
May19° / 11°15214.7014.45.6
Jun23° / 15°10012.40156.8
Jul26° / 18°7310.6014.87.2
Aug26° / 18°8510.9013.77.0
Sep22° / 14°21211.2012.36.6
Oct17° / 10°24211.50.210.85.6
Nov13° / 33613.80.99.63.2
Dec / 29613.93.991.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27525
37426
47327
57228
67129
77129
87030
96931
106832
116832
126733
136634
146535
156535
166436
176337
186337
196238
206238
216139
226139
236040
246040
256040
266040
275842
285842
295842
305743

Chance of precipitation in September

Any precipitation

Kotor gets around 212 mm of rain over 11.2 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 38% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
236
336
437
537
637
738
838
939
1039
1139
1239
1340
1440
1539
1639
1739
1839
1938
2038
2138
2238
2337
2437
2537
2637
2737
2838
2938
3038

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 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12339371
22439351
32640331
42841311
52941291
63142270
73242250
83443230
93543210
103743200
113843190
123943170
134143160
144242150
154442140
164641130
174840120
185039110
195138110
205337100
21553690
22563590
23593380
24603280
25623170
26633070
27652960
28652960
29672850
30672850

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:14 AM to 5:46 AM, and sunset from 6:15 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:146:15
213.05:156:13
312.95:176:11
412.95:186:10
512.85:196:08
612.85:206:06
712.75:216:04
812.75:226:02
912.65:236:01
1012.65:245:59
1112.55:255:57
1212.55:265:55
1312.45:275:53
1412.45:295:51
1512.35:305:50
1612.35:315:48
1712.25:325:46
1812.25:335:44
1912.15:345:42
2012.15:355:40
2112.05:365:39
2212.05:375:37
2311.95:395:35
2411.95:405:33
2511.85:415:31
2611.85:425:29
2711.75:435:28
2811.75:445:26
2911.65:455:24
3011.65:465:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.4 kWh/m².

For context, solar energy here swings from a low near 1.43 kWh/m² to a high of 6.76 kWh/m² in July across the year — September's 4.4 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.0Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.1Bright
224.1Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Kotor?

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

6.6
Sightseeing
4th-best month of the year
4.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Kotor for sightseeing.

What to pack for Kotor in September

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

In September, Kotor sees daytime highs around 22°C and nights near 14°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Kotor 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 at the nearest coast (about 13 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 26 to Oct 29 — about 5.2 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 Kotor 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 Kotor 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
Mar5High
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Kotor?

Kotor sits at 42.4°N, 18.8°E, 0 m above sea level, in Montenegro. The nearest listed city is Tivat, 6.0 km away.

CetinjeBudvaBečićiHerceg NoviPodgoricaNikšić

Topography around Kotor

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

Within 3 km, the terrain around Kotor has very significant variations in elevation — a maximum elevation change of 1,404 m around an average of 420 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,739 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,530 m.

The land around Kotor is covered by trees (64%) within 3 km, trees (56%) within 16 km, and trees (42%), water (30%) and grassland (21%) within 80 km.

3 km
1,404 m
16 km
1,739 m
80 km
2,530 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Tivat 6.0 km · Perast 9.0 km · Cetinje 12 km · Budva 16 km · Bečići 17 km · Herceg Novi 19 km · Podgorica 41 km · Nikšić 42 km

Montenegro travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 42% of US
price level, 2025
GDP per capita
$14,817
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
86%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
7.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Orthodox 72%Muslim 19%Catholic 3%other 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 Kotor (42.4207°, 18.7682°, elevation 0 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).