Weather in Croatia in August

August climate overview

Daytime highs across Croatia in August run from 27.4°C (Pula) to 29.3°C (Split). In Split about 94% of August days reach 25°C. Nights average 21.4°C; the coldest 10% of nights in Pula fall to 19°C or below.

Rainfall in August

Expect around 5 rainy days (1 mm or more) in August, with Cavtat the driest (3 days) and Pula the wettest (7 days). The wettest August at Split between 1991 and 2020 was 2002 with 163 mm; the driest was 2012 with 1 mm.

Sea temperature

The sea averages 25.3°C around Croatia in August - warmest at Cavtat (25.7°C). That is comfortable for swimming.

Sunshine and daylight

Around 10.5 hours of sunshine a day on average, out of 13.8 hours of daylight (sunshine estimated from cloud cover).

August against the rest of the year in Croatia

August is the 1st warmest month of the twelve in Croatia. It is 0.4°C warmer than July and 4.6°C cooler in September. The hottest month here is August (28°C) and the coolest January (10°C).

Which part of Croatia in August?

• Most sunshine: Cavtat, 11.1 h a day.
• Driest: Cavtat, about 3 rainy days.
• Warmest sea: Cavtat, 26°C.
• Hottest: Split, 29°C by day.
• Coolest (better for walking and cities): Pula, 27°C.

What to pack for Croatia in August

Based on the averages: summer clothes for the day; a light waterproof for the odd shower; swimwear - the sea is 25°C.

Similar weather elsewhere in August

Within 1.5°C of Croatia's August daytime average: Guanacaste (30°C, sea 29°C), Kuala Lumpur (30°C), Tokyo (30°C, sea 27°C), Alicante (30°C, sea 27°C), Paphos (30°C, sea 28°C). See the full ranking for August.

Which part of Croatia should you choose?

Split suits travellers who put daytime heat first, with 29°C afternoons and 4 rainy days on average. Dubrovnik matches that daytime temperature, but its 26°C sea is slightly warmer and it averages 5 rainy days. Cavtat offers a useful balance if reducing the chance of rain matters most: days average 28°C, the sea reaches 26°C and there are 3 rainy days, the lowest figure among these destinations. Pula is the cooler choice at 27°C, though that is still warm rather than mild. Its catch is 7 rainy days, so it suits travellers happy to keep outdoor plans flexible rather than those prioritising the driest option.

What the weather means for your day

Plan longer walks for the morning and leave room for shade or a slower pace around midday. At Split, 94% of August days exceed 25°C, so sustained warmth is a more sensible expectation than occasional heat. Light, breathable clothing, sun protection and easy access to drinking water should guide your packing. Nights remain warm across the destinations, making room cooling worth checking if heat affects your sleep. A light rain layer is useful, but rain need not dominate your plans: Croatia averages 5 rainy days during the month. Keep the timing of outdoor activities flexible rather than assuming every day will stay dry.