Dubrovnik in September

When to go

September is still a busy month in Dubrovnik: the Dubrovnik Tourist Board's first eVisitor figures for the most recent September show arrivals and overnight stays up on the year before. The facts below give the Croatian weather service's mean highs, lows, rainfall and rain days as relayed by the World Meteorological Organization, plus a sea temperature from the service's own climate-normals table. The City of Dubrovnik's visitor-number prediction tool can help you judge how busy the historic core may be on a given day.

Trip facts

• The World Meteorological Organization's World Weather Information Service lists Dubrovnik's mean daily maximum temperature for September as 77.7°F (25.4°C) and its mean daily minimum as 65.7°F (18.7°C), using data from the Croatian Meteorological and Hydrological Service; no averaging period is named. (worldweather.wmo.int, checked 2026-10-15)
• The World Meteorological Organization's World Weather Information Service lists mean total rainfall of 78.7 mm and a mean of 6.4 rain days for Dubrovnik in September, using data from the Croatian Meteorological and Hydrological Service; no averaging period is named. (worldweather.wmo.int, checked 2026-10-15)
• The Croatian Meteorological and Hydrological Service's 1971–2000 climate-normals table for Dubrovnik lists a sea temperature (tmore / tsea) of 21.8 °C in September. (klima.hr, checked 2026-10-15)
• The Dubrovnik Tourist Board (in Croatian) reports that Dubrovnik recorded 191,549 tourist arrivals and 599,728 overnight stays in September 2026, four percent more of each than in the same month last year, based on the first available eVisitor data. (experiencedubrovnik.com, checked 2026-10-15)
• Libertas-Dubrovnik, which says it carries out bus transport in the City of Dubrovnik and nearby municipalities, says public city and county transport follows winter and summer timetables with a different offer on weekdays, Saturdays, Sundays and holidays. (www.libertasdubrovnik.com, checked 2026-10-15)
• The Dubrovnik Tourist Board's site says access to the UNESCO-protected Old City is restricted, and only guests with prior registration or confirmed accommodation that includes parking are permitted to enter the so-called 'Special Traffic Regime Zone.' (experiencedubrovnik.com, checked 2026-10-15)
• The City of Dubrovnik's project page says its visitor-number prediction application uses machine learning to estimate how many people will be in the historic core and buffer zone on a selected day, which can help residents and tourists plan their arrival in the Old Town. (www.dubrovnik.hr, checked 2026-10-15)
• Dubrovnik Airport's site says Ruđer Bošković Airport is 22.5 kilometers from Dubrovnik and that the drive takes 30-35 minutes on average, but you should plan for up to an hour in the summer months. (www.dbv.hr, checked 2026-10-15)
• The EU's official Travel to Europe site lists Croatia among the European countries using the Entry/Exit System (EES), which registers non-EU nationals travelling for a short stay each time they cross the external borders of those countries. (travel-europe.europa.eu, checked 2026-10-15)
• The EU's official ETIAS page says ETIAS is currently not in operation and no applications for travel authorisations are collected at this point. (travel-europe.europa.eu, checked 2026-10-15)