September weather forecast
Croatia

September in Croatia is a transitional period from the peak summer season to the onset of autumn. The weather begins to cool down, but it remains pleasantly warm and sunny for most of the month, with fewer tourists, making it a more peaceful time to explore the country.

In inland areas, including cities such as Zagreb and Čakovec, the average temperatures range from 18°C (64.4°F) to 25°C (77°F), a significant drop compared to the summer peak. The precipitation starts to increase slightly compared to the previous months, with values typically between 60mm (2.36") and 90mm (3.54"). The countryside adopts an autumnal glow, with a change in the colour of foliage beginning to occur by the end of the month.

The mountainous regions of the Dinaric Alps, including Velebit and Pljesevica ranges, witness cooler temperatures, with averages between 15°C (59°F) and 20°C (68°F). The high-altitude landscapes become adorned with the first signs of autumn, offering scenic views and pleasant weather for outdoor activities.

On the Adriatic coast, the cities of Split, Dubrovnik, and the island of Hvar continue to enjoy warm weather, with average temperatures between 23°C (73.4°F) and 28°C (82.4°F). The sea remains warm enough for swimming, and the rainfall is relatively low, usually between 40mm (1.57") and 70mm (2.76"), making it a lovely time for beach activities and coastal exploration.

September presents an opportune time to enjoy Croatia's mild and calm weather. As the heat of the summer fades, the country embraces the early signs of autumn, with cooler nights and less crowded tourist attractions. Despite the declining temperatures, the presence of a warm sun during the day makes September an attractive month for travel in Croatia.

---

• Zagreb - September »
  On the first day of September sunrise is at 06:17 and sunset at 19:34. In Zagreb, Croatia, in September, during 10.4 rainfall days, 86mm (3.39") of precipitation is typically accumulated.
• Split - September »
  In Split, Croatia, the average seawater temperature in September is 23.8°C (74.8°F). In Split, in September, it is raining for 7 days, with typically 72mm (2.83") of accumulated precipitation.
• Rijeka - September »
  In Rijeka in September, the average water temperature is 23.4°C (74.1°F). On the first day of September in Rijeka sunrise is at 06:24 and sunset at 19:39.
• Osijek - September »
  In Osijek during September, the rain falls for 9.4 days and regularly aggregates up to 51mm (2.01") of precipitation. In the transition to September, Osijek observes a minor drop in the average high-temperature, shifting from 27.5°C (81.5°F) in August to a still warm 23.4°C (74.1°F).
• Zadar - September »
  On the first day of September in Zadar sunrise is at 06:22 and sunset at 19:35. In Zadar in September, during 10.6 rainfall days, 63mm (2.48") of precipitation is typically accumulated.
• Pula - September »
  With the commencement of September, Pula records a moderate temperature decline, with the average high easing from August's 28°C (82.4°F) to a still warm 24°C (75.2°F). During the month of September, the temperature in Pula generally drops to a low average of 15°C (59°F).
• Slavonski Brod - September »
  On the first day of September in Slavonski Brod sunrise is at 06:10 and sunset at 19:25. In Slavonski Brod in September, it is raining for 9.7 days, with typically 63mm (2.48") of accumulated precipitation.
• Karlovac - September »
  In Karlovac, in September, during 10.6 rainfall days, 62mm (2.44") of precipitation is typically accumulated. September in Karlovac is characterized by a reduction in the average high-temperature, from a moderately hot 28.4°C (83.1°F) in August to a pleasant 21.8°C (71.2°F).
• Varaždin - September »
  On the first day of September in Varaždin sunrise is at 06:15 and sunset at 19:33. In Varaždin, in September, during 10.3 rainfall days, 85mm (3.35") of precipitation is typically accumulated.
• Šibenik - September »
  With the arrival of September, Šibenik experiences a modest decline in average high-temperatures, transitioning from a warm 28.3°C (82.9°F) in August to a still moderately hot 23.5°C (74.3°F). Šibenik, during the month of September, experiences an average low-temperature of 17.9°C (64.2°F). In Šibenik in September, the average water temperature is 23.8°C (74.8°F).
• Dubrovnik - September »
  In Dubrovnik the average seawater temperature in September is 24.3°C (75.7°F). In Dubrovnik, in September, it is raining for 9.9 days, with typically 54mm (2.13") of accumulated precipitation.