Dubrovnik weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – September
What is the weather like in Dubrovnik in September?
In September, Dubrovnik is warm: daytime highs average 24 °C, and nights cool down to about 18 °C. The sea averages 23.8 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 9 rainy days and 145 mm in total. All in all, September is an excellent month for a holiday in Dubrovnik.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 97 | 83 | 42 |
| Day | 28° | 24° | 20° |
| Night | 22° | 18° | 14° |
| Sea | 26° | 24° | 21° |
| Sun | 11 h | 8 h | 7 h |
| Rain days | 6 | 9 | 11 |
More details for September
- Daylight
- 12 h 34 min06:26 – 19:00
- UV index
- 6 · highclear sky, noon (estimate)
- Muggy days
- 6 daysdew point 18 °C or more
- Wind
- 16 km/haverage daily peak
- Cloud cover
- 39 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Zagreb
How the score comes together
- Temperatureweight 35 %80 %
- Seaweight 25 %97 %
- Sunshineweight 20 %88 %
- Few rainy daysweight 20 %63 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Dubrovnik in September: quick answers
Is Dubrovnik hot in September?
Warm rather than hot: in September, daytime highs in Dubrovnik average 24 °C and nights cool to about 18 °C.
Can you swim in Dubrovnik in September?
Yes. In September the sea averages 23.8 °C – pleasant for swimming.
Does it rain much in Dubrovnik in September?
Rain is frequent, with about 9 rainy days and 145 mm in total.
Dubrovnik month by month
The whole year in DubrovnikAll destinations: Croatia
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)