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Warmest sea in Croatia in September

234 coastal locations in Croatia ranked by their typical September sea temperature. Region-wide average in September: 23.7°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

Dubrovnik (Luka Gruz)

24.8°C September mean in Croatia

Regional September average

23.7°C

across all 234 coastal locations in Croatia

Vs annual mean

+4.9°C

above the year-round regional average

What the Croatia sea feels like in September

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

Croatia monthly average 13.2°C to 25.7°C
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  • Warmest month August 25.7°C
  • Coldest month March 13.2°C
  • Annual mean 18.8°C
  • Months above 20°C 5 of 12

Where September fits in the year

September sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Croatia month rankings:

Croatia sea temperature map (live)

The map shows today's latest reading at every Croatia location. The list below is based on the typical September mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Croatia locations in September

Sorted by the typical September mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location September mean
1 Dubrovnik (Luka Gruz) Dubrovačko-neretvanska županija 24.8°C
2 Zaton Dubrovačko-neretvanska županija 24.8°C
3 Cavtat 24.6°C
4 Dubrovnik 24.6°C
5 Kolocep Island 24.6°C
6 Kupari 24.6°C
7 Mlini 24.6°C
8 Mokosica 24.6°C
9 Molunat 24.6°C
10 Orasac 24.6°C
11 Plat 24.6°C
12 Srebreno 24.6°C
13 Elafiti Islands 24.6°C
14 Lopud 24.6°C
15 Sipan 24.6°C
16 Trsteno 24.6°C
17 Prevlaka 24.6°C
18 Slano 24.6°C
19 Brijesta 24.5°C
20 Klek 24.5°C
21 Komarna 24.5°C
22 Mali Ston 24.5°C
23 Peljesac 24.5°C
24 Prapratno 24.5°C
25 Ston 24.5°C
Show 25 more ▸
26 Mljet 24.5°C
27 Žrnovo Dubrovačko-neretvanska županija 24.5°C
28 Duba 24.4°C
29 Pomena 24.4°C
30 Trstenik 24.4°C
31 Zuljana 24.4°C
32 Zaliv Pantera Zadarska županija 24.3°C
33 Gradac 24.3°C
34 Ploce 24.3°C
35 Podaca 24.3°C
36 Trpanj 24.3°C
37 Zaostrog 24.3°C
38 Postire Splitsko-dalmatinska županija 24.3°C
39 Drasnice 24.2°C
40 Drvenik 24.2°C
41 Igrane 24.2°C
42 Loviste 24.2°C
43 Makarska riviera 24.2°C
44 Podgora 24.2°C
45 Zivogosce 24.2°C
46 Kali 24.2°C
47 Nin 24.2°C
48 Petrcane 24.2°C
49 Preko 24.2°C
50 Ugljan 24.2°C

Coldest 10 in Croatia in September

Same data the other way. Helpful if you want to know which Croatia coasts to avoid for swimming in September.

# Location September mean
1 Bakar 21.7°C
2 Kraljevica 21.7°C
3 Moscenicka Draga 21.7°C
4 Cres 21.9°C
5 Lovran 21.9°C
6 Martinscica 21.9°C
7 Matulji 21.9°C
8 Medveja 21.9°C
9 Opatija 21.9°C
10 Rijeka 21.9°C

More on this region