Croatia Weather – August
August is the hottest month of the year in Croatia with averages of 23–25 °C and maximums regularly above 35 °C. It is also the month when the Adriatic Sea reaches its highest temperatures: 25–27 °C.
Sunshine remains exceptional (270–330 hours depending on the station) and rainfall is low (41–98 mm). August is the peak of the tourist season — beaches and islands are at their busiest.
With 25 to 29 hot days per month, it is the obvious choice for beach and sun lovers.
Climate data – August
| Dubrovnik | Rijeka | Šibenik | Split | |
|---|---|---|---|---|
| Average temperature (°C) | 25.0 | 23.1 | 24.6 | 25.5 |
| Record high (°C) | 37.0 | 38.1 | 39.2 | 38.1 |
| Record low (°C) | 14.1 | 9.1 | 10.2 | 11.2 |
| Sunshine (hours/month) | 331.6 | 274.6 | 327.4 | 326.5 |
| Rainfall (mm) | 66.6 | 98.3 | 44.2 | 41.4 |
| Sunny days | 19 | 10 | 15 | 16 |
| Rainy days | 5 | 9 | 5 | 5 |
| Hot days (max ≥ 25 °C) | 29 | 25 | 29 | 29 |
Source: Croatian Meteorological and Hydrological Service (DHMZ). Historical climate averages.
Tips for August
- The sea is the warmest of the year — ideal for all water activities
- Remember to stay hydrated in the high heat
- The Dalmatian islands (Hvar, Vis, Mljet) are beautiful but very crowded
- Avoid the hottest hours (1pm–5pm) for outdoor visits
- Book restaurants and excursions in advance in high season
Weather by month
- Croatia Weather – May
- Croatia Weather – June
- Croatia Weather – July
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- Croatia Weather – September
- Croatia Weather – October
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