SwimTemperature logoSwimTemperature
Open live map
All countries

Sea temperature in Croatia

Live water temperatures and swimming conditions across 170 beaches on the Croatia coast.

Best time to swim in Croatia

The sea in Croatia peaks in August, when the water averages around 26°C.

The main swimming season runs from June – October, when surface temperatures stay comfortable for extended sessions.

On average, 5 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

Shoulder months like May and November are noticeably cooler but often quieter, with fewer crowds and steadier weather.

Outside peak season the water drops toward 15°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.

The coldest month is typically February at around 12°C, when cold-water swimmers dominate the coast.

Croatia sea temperature history

Long-term climatology for Croatia shows an annual mean sea temperature of 18°C, ranging from 12°C in winter to 26°C at the summer peak.

The seasonal swing is roughly 14°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at Croatia, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.

Jan
13°C
Feb
12°C
Mar
13°C
Apr
15°C
May
19°C
Jun
23°C
Jul
25°C
Aug
26°C
Sep
23°C
Oct
20°C
Nov
17°C
Dec
14°C

Values are area averages; individual beaches vary by exposure and depth.

Croatia sea temperature: frequently asked questions

What is the warmest month to swim in Croatia?

August is the warmest month in Croatia, when the sea averages about 26°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Croatia?

The coldest month in Croatia is typically February, when the water averages around 12°C. Cold-water swimmers and surfers dominate this period.

When can you swim in Croatia without a wetsuit?

The main swimming season in Croatia runs from June – October — about 5 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.

Do I need a wetsuit in Croatia?

Outside peak summer the water in Croatia drops toward 15°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.

What is the average sea temperature in Croatia?

The long-term annual mean sea temperature in Croatia is about 18°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Croatia?

The live reading at the top of this page shows the current sea temperature in Croatia, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.

Croatia sea temperature by month

Average sea temperatures around Croatia for every month of the year, based on long-term Open-Meteo marine climatology.

Monthly average sea temperature in Croatia
MonthAverage sea
January13.0°C
February12.0°C
March13.0°C
April15.0°C
May19.0°C
June23.0°C
July25.0°C
August ⭐26.0°C
September23.0°C
October20.0°C
November17.0°C
December14.0°C

Monthly figures are modelled climatology averages, not live readings. How accurate is our data?

Coastal regions of Croatia

Region hubs with live sea temperatures, swim conditions and a beach directory.

Istria
38 beaches
38 tracked beaches in Istria, Croatia, with live Adriatic Sea temperatures.
North Dalmatia
21 beaches
21 tracked beaches in North Dalmatia, Croatia, with live Adriatic Sea temperatures.
Dalmatian Coast
14 beaches
Crystal Adriatic from Split and Hvar down to Dubrovnik.

Warmest beaches in Croatia right now

BeachRegionSea
BačviceDalmatia17.7°C
Sabunike BeachNorth Dalmatia17.7°C
Sumartin BeachBrac17.7°C
Dubovica BeachHvar17.7°C
Grebisce BeachHvar17.7°C
Lapad BeachDalmatia17.6°C
KasjuniDalmatia17.6°C
Saccorgiana BeachIstria17.6°C
Val de LessoIstria17.6°C
Laguna MaredaIstria17.6°C
Bijela UvalaIstria17.6°C
Slatina Beach OpatijaKvarner17.6°C
Suha PuntaRab17.6°C
Punta KrizicaCres17.6°C
Sunny Bay LosinjLosinj17.6°C
Punta Beach PagPag17.6°C
Punta SkalaNorth Dalmatia17.6°C
Jadrija BeachNorth Dalmatia17.6°C
Firule BeachCentral Dalmatia17.6°C
Makarska BeachCentral Dalmatia17.6°C
Pupnatska LukaKorcula17.6°C
Blace BeachMljet17.6°C
Limuni BeachMljet17.6°C
Orasac BeachDubrovnik17.6°C
Rajska PlažaKvarner17.5°C
SakarunDalmatia17.5°C
Sahara BeachRab17.5°C
Veli Losinj BeachLosinj17.5°C
Kolovare BeachNorth Dalmatia17.5°C
Borik BeachNorth Dalmatia17.5°C
Stomarica BeachCentral Dalmatia17.5°C
Zlatni RatBrac17.5°C
AmbrelaIstria17.4°C
Amarin BeachIstria17.4°C
Punat BeachKrk17.4°C
Sveti Ivan BeachCres17.4°C
Nin Queens BeachNorth Dalmatia17.4°C
Prosika BeachNorth Dalmatia17.4°C
Trstenik BeachCentral Dalmatia17.4°C
Vela Luka BracBrac17.4°C
Milna Beach HvarHvar17.4°C
Prizba BeachKorcula17.4°C
Sveti Jakov BeachDubrovnik17.4°C
BelvedereIstria17.3°C
KandarolaKvarner17.3°C
Stoja BeachIstria17.3°C
Verudela BeachIstria17.3°C
Skaraba BeachIstria17.3°C
Blue Lagoon PorecIstria17.3°C
Rivarela BeachIstria17.3°C
Maslinica Beach RabacIstria17.3°C
Veli ZalNorth Dalmatia17.3°C
Podvrske BeachNorth Dalmatia17.3°C
Kosirina BeachNorth Dalmatia17.3°C
Kastelet BeachCentral Dalmatia17.3°C
Baska Voda BeachCentral Dalmatia17.3°C
Ramova BeachCentral Dalmatia17.3°C
Postira BeachBrac17.3°C
Lovrecina BayBrac17.3°C
Mekicevica BeachHvar17.3°C
Zdrilca BeachHvar17.3°C
Zaglav VisVis17.3°C
Bilin ZalKorcula17.3°C
Zaton MaliDubrovnik17.3°C
Mlini BeachDubrovnik17.3°C
Sveti IvanKvarner17.2°C
PasjačaDalmatia17.2°C
Zlatne StijeneIstria17.2°C
Malinska BeachKrk17.2°C
Stara Baska BeachKrk17.2°C
Ninska LagunaNorth Dalmatia17.2°C
Sakarun BeachNorth Dalmatia17.2°C
Banj BeachNorth Dalmatia17.2°C
Drvenik BeachCentral Dalmatia17.2°C
Palmizana BeachHvar17.2°C
Milna VisVis17.2°C
StinivaDalmatia17.1°C
Zelena LagunaIstria17.1°C
St Andrea BeachIstria17.1°C
Costabella BeachKvarner17.1°C
Njivice BeachKrk17.1°C
Oprna BayKrk17.1°C
Caska BeachPag17.1°C
Ovcice BeachCentral Dalmatia17.1°C
Gradac BeachCentral Dalmatia17.1°C
Martinica BeachBrac17.1°C
Vela FarskaBrac17.1°C
Lone BayIstria17.0°C
Ambrela BeachIstria17.0°C
Karpinjan BeachIstria17.0°C
Lido Beach OpatijaKvarner17.0°C
Nikolina BeachCentral Dalmatia17.0°C
Zivogosce BeachCentral Dalmatia17.0°C
Zaostrog BeachCentral Dalmatia17.0°C
Osibova BeachBrac17.0°C
Pucisca BeachBrac17.0°C
Mlaska BeachHvar17.0°C
Copacabana Beach DubrovnikDubrovnik17.0°C
DubovicaDalmatia16.9°C
Havajsko MoreIstria16.9°C
Cuvi BeachIstria16.9°C
Kanova BeachIstria16.9°C
Vrbnik BeachKrk16.9°C
Livacina BeachRab16.9°C
Solaris BeachNorth Dalmatia16.9°C
Mala RaducaNorth Dalmatia16.9°C
Srebrna BeachVis16.9°C
Vela PrzinaKorcula16.9°C
Cavtat BeachDubrovnik16.9°C
Srebreno BeachDubrovnik16.9°C
Punta RataDalmatia16.8°C
Kamenjak BeachIstria16.8°C
Valkane BeachIstria16.8°C
Materada BeachIstria16.8°C
Sablicevo BeachKvarner16.8°C
Zaglav BeachLosinj16.8°C
Susak BeachLosinj16.8°C
Vodice BeachNorth Dalmatia16.8°C
Znjan BeachCentral Dalmatia16.8°C
Bene BeachCentral Dalmatia16.8°C
Berulia BeachCentral Dalmatia16.8°C
Racisce BeachKorcula16.8°C
Pasjaca BeachDubrovnik16.8°C
Hawaii BeachIstria16.7°C
Crikvenica BeachKvarner16.7°C
Valalta BeachIstria16.7°C
Zlatni Rat IstriaIstria16.7°C
Delfin BeachIstria16.7°C
Ploce Beach RijekaKvarner16.7°C
Baska BeachKrk16.7°C
Zrce BeachPag16.7°C
Straski BeachPag16.7°C
Ruzica BeachPag16.7°C
Simuni BeachPag16.7°C
Supetar BeachBrac16.7°C
Zarace BeachHvar16.7°C
Danče BeachDubrovnik16.7°C
Slano BeachDubrovnik16.7°C
NugalDalmatia16.6°C
Plava LagunaIstria16.6°C
Ulika BeachIstria16.6°C
Duga UvalaIstria16.6°C
Slatina Beach CresCres16.6°C
Cikat BeachLosinj16.6°C
Slanica BeachNorth Dalmatia16.6°C
Lucice BeachBrac16.6°C
Tatinja BeachKorcula16.6°C
Saplunara BeachMljet16.6°C
StinivaDalmatia16.5°C
SunjDalmatia16.5°C
SaplunaraDalmatia16.5°C
Mulini BeachIstria16.5°C
Brulo BeachIstria16.5°C
Medveja BeachIstria16.5°C
Icici BeachIstria16.5°C
Ciganka BeachRab16.5°C
Podgora BeachCentral Dalmatia16.5°C
Pokonji DolHvar16.5°C
Bijeca BeachIstria16.4°C
Pakleni IslandsDalmatia16.4°C
Banje BeachDalmatia16.4°C
Girandella BeachIstria16.4°C
Zaton BeachNorth Dalmatia16.4°C
Diklo BeachNorth Dalmatia16.4°C
Srima BeachNorth Dalmatia16.4°C
Tucepi BeachCentral Dalmatia16.4°C
Stiniva BeachVis16.4°C
Beritnica BeachPag16.3°C
Sveti Duh BeachNorth Dalmatia16.3°C
Duce BeachCentral Dalmatia16.3°C

Sea temperature in Croatia — FAQ

How warm is the sea in Croatia in November?

The sea off Croatia averages about 17.0°C in November, based on long-term monthly averages for this coast.

When is the best time to swim in Croatia?

Croatia is warmest in August (around 26.0°C) and coldest in February (around 12.0°C). There are typically 4 months a year when the water sits above 22°C.

What is the average yearly sea temperature in Croatia?

Across all twelve months, the sea in Croatia averages about 18.3°C.

Do you need a wetsuit to swim in Croatia?

In peak season (around August, ~26.0°C) most swimmers are comfortable without a wetsuit. Outside summer, when the water drops toward 12.0°C, a 3/2mm to 5/4mm wetsuit is recommended.