Sibenik weather in September

In September, Sibenik sees average daytime highs of 25°C and overnight lows near 16°C, with 94 mm of rain across 7.8 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 27°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 dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Sibenik's 4th-clearest and 9th-windiest month. For the whole year in context, see Sibenik's year-round climate.

Daytime high
25°
4th warmest
Overnight low
16°
9th coldest
Rainfall
94 mm
7.8 wet days
Daylight
12 h 18 min
5:42 AM – 6:00 PM
Cloud cover
39%
4th clearest
Wind
10 km/h
9th windiest
Solar energy
4.56 kWh/m²
Travel score
7.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 27°C in the first days to 22°C by the end.

A typical September day in Sibenik reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12718
22718
32718
42718
52617
62617
72617
82617
92617
102617
112517
122516
132516
142516
152516
162416
172416
182416
192415
202415
212415
222315
232315
242315
252315
262315
272314
282314
292214
302214

How September really feels in Sibenik

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.

Sibenik weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 889.90.99.12.2
Feb11° / 818.90.910.22.6
Mar14° / 839.80.611.64.2
Apr17° / 8610.60.113.25.5
May22° / 13°709.2014.57.0
Jun26° / 17°486.8015.27.4
Jul29° / 20°264.5014.96.5
Aug29° / 20°444.8013.86.4
Sep25° / 16°947.8012.37.4
Oct20° / 12°1069.9010.86.5
Nov15° / 15012.20.19.54.3
Dec11° / 12010.90.48.82.6

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
27921
37822
47723
57624
67525
77426
87426
97228
107228
117129
127030
137030
147030
156931
166832
176832
186832
196832
206832
216733
226733
236733
246733
256634
266634
276634
286535
296535
306337

Chance of precipitation in September

Any precipitation

Sibenik gets around 94 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 27% and peaks near 31% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
122
222
323
423
523
623
724
824
925
1025
1125
1226
1326
1426
1527
1627
1727
1827
1928
2028
2128
2228
2329
2429
2529
2630
2730
2830
2931
3031

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 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12832346
23032335
33132325
43233314
53333304
63334294
73435283
83435273
93536273
103536262
113536262
123636262
133736252
143836252
153835242
164035242
174135231
184234231
194333221
204533211
214632201
224731202
234931192
245030182
255030182
265130172
275130172
285330161
295231161
305331151

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min 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 90 minutes over September. Sunrise moves from 5:24 AM to 5:58 AM, and sunset from 6:28 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:246:28
213.05:266:26
313.05:276:24
412.95:286:22
512.95:296:20
612.85:306:19
712.85:316:17
812.75:336:15
912.75:346:13
1012.65:356:11
1112.65:366:09
1212.55:376:07
1312.45:386:05
1412.45:406:03
1512.35:416:02
1612.35:426:00
1712.25:435:58
1812.25:445:56
1912.15:455:54
2012.15:475:52
2112.05:485:50
2212.05:495:48
2311.95:505:46
2411.95:515:44
2511.85:525:42
2611.85:545:41
2711.75:555:39
2811.75:565:37
2911.65:575:35
3011.65:585:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.56 kWh/m².

For context, solar energy here swings from a low near 1.45 kWh/m² to a high of 6.98 kWh/m² in July across the year — September's 4.56 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.1Bright
65.1Bright
75.0Bright
84.9Bright
94.9Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.6Bright
154.6Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.0Bright
274.0Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Sibenik?

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

7.4
Sightseeing
1st-best month of the year
6.5
Beach & pool
4th-best month of the year

September is one of the better times to visit Sibenik for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sibenik in September

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

In September, Sibenik sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Sibenik in September

The nearest coast averages about 22°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 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 4 to Oct 21 — about 4.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul24Refreshing
Aug24Warm
Sep22Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Sibenik 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 Sibenik peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 15UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar5Moderate
Apr6High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Sibenik?

Sibenik sits at 43.7°N, 15.9°E, 16 m above sea level, in Croatia. The nearest listed city is Split, 51 km away.

SplitSolinZadarHvarBihaćJajceBosanska KrupaBugojno

Topography around Sibenik

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

Within 3 km, the terrain around Sibenik has significant variations in elevation — a maximum elevation change of 253 m around an average of 53 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 538 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,882 m.

The land around Sibenik is covered by trees (31%) and shrubs (30%) within 3 km, water (31%), trees (27%) and shrubs (27%) within 16 km, and water (43%) and trees (26%) within 80 km.

3 km
253 m
16 km
538 m
80 km
1,882 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Split 51 km · Solin 53 km · Zadar 68 km · Hvar 77 km · Bihać 120 km · Jajce 129 km · Bosanska Krupa 129 km · Bugojno 130 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 Sibenik (43.7343°, 15.8942°, elevation 16 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).