Early summer is sunny and warm across the coast, with sea temperatures becoming pleasant for swimming. Tourist numbers increase markedly, particularly on popular islands and in Dubrovnik and Split. Book ferries and accommodation in advance if travelling to hotspot towns.
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Croatia in June.
Northern Adriatic
June brings long sunny days and comfortable warmth: daytime highs in Pula often reach low to mid-twenties Celsius and the sea feels pleasantly cool for swimming. Island marinas bustle - Krk and Cres get lively - while inland hill villages remain tranquil and hospitable. For travelers this is perfect beach-and-food weather before July crowds; book ferries in advance and bring a hat and layered clothing for cooler mornings.
Split, Hvar, Brač, Vis
June turns genuinely summery: beaches around Bol (Brač) and the Pakleni islands by Hvar host swimmers while Split’s waterfront hums with cafés and restaurants. Sea temperatures are comfortable and daily sunshine is reliable, though occasional thunderstorms form inland. For travelers this is peak activity without the crush of August; book tours and ferries in advance and pack summer clothes plus a light rain layer.
Dubrovnik, Korčula, Pelješac, Mljet
June brings reliably warm weather: sunny days in the low-to-mid twenties, calm seas, and frequent boat crossings to Korčula and Mljet. Summer festivals start to activate the cultural calendar, and the Dubrovnik city walls draw larger day-trip crowds. Travelers should book accommodation early and bring sun protection; mornings are pleasant for kayaking around Lokrum or hiking on Mljet before midday heat.
Mountains and Karst Interior
June offers warm, often pleasantly cool mountain days ideal for trekking and climbing; night temperatures can still drop substantially above 1,000m. Alpine meadows are at their peak and long daylight hours favor multi-day routes in Paklenica or Biokovo foothills. Travelers should pack sun protection plus wind- and rainproof outer layers for sudden convective storms.
Zagreb, Slavonia, Northern Plains
June heats up toward summer: daytime temperatures can rise into the mid- to high-twenties, especially in inland plains such as Osijek and Virovitica, and humidity grows. Urban sightseeing is comfortable in early morning and late afternoon; bring sun protection and water for long walks. Travelers should be aware that heatwaves occasionally push temperatures higher and that some cultural events kick off in June.
There are no major festivals or events in Croatia during June to be aware of.
See how June compares with the rest of the year, then read the full guide.