Croatia in september: average Weather, Temperature and Climate, Where to go?
Weather in Croatia in september 2025
Here, find the the weather forecast for september for most popular cities in Croatia. These forecasts are probabilities for the month of september from weather reports for many years. The percentage indicates the probability of having the weather mentioned.
Average weather in september in Zagreb
good weather
Weather at 6am
59°F
Clear/Sunny
38% of time
28%
11%
9%
Weather at 12pm
74°F
Clear/Sunny
43% of time
28%
14%
9%
Weather at 6pm
61°F
Clear/Sunny
46% of time
25%
13%
7%
Weather at 3am
56°F
33%
23%
19%
17%
Where to go in Croatia in september?
Where to go in Croatia in september: destination map
Where to go in each region in september?
| Central Croatia (Zagreb, Karlovac, Varaždin...) | 72°F to 76°F | 2 à 6 days | good weather* | |
| Croatian islands (Hvar island, Krk island, Pag island...) | 70°F to 77°F | 4 à 9 days | 76°F to 77°F | good weather |
| Dalmatia (Dubrovnik, Split, Zadar...) | 72°F to 81°F | 4 à 7 days | 76°F to 77°F | good weather |
| Istria (Pula, Rovinj, Umag...) | 76°F | 8 à 9 days | 76°F | good weather |
| Kvarner Gulf (Plitvice Lakes National Park, Rijeka, Senj...) | 70°F to 72°F | 6 à 9 days | 76°F | good weather |
| Slavonia (Virovitica, Osijek, Slavonski Brod...) | 74°F to 79°F | 3 à 6 days | perfect weather* |
Where should you go in Croatia in september when it comes to the weather?
Remember:
The climate in Croatia in september ranges from perfect to good depending on the region and city.
The month of September is a pivotal month between the summer and autumn season and already sees its temperatures cooling off. Many Croatian towns are cold. The morning and evening temperatures of cities to the north, such as Rijeka, Opatija and Gospic, are cooling off more rapidly compared to other cities. However, the climate throughout September in Croatia remains favorable throughout the whole of Croatian territory. The days are always bright, thanks to the presence of the sun.
September on the Adriatic Coast
As in Dubrovnik and Split, the coastal towns that are located on the northern part of the Croatian territory are also magnificent in September. Although temperatures have decreased slightly compared to August, the heat is still comfortable. In the morning, one will enjoy a wonderful sunshine because the rains are still rare - despite the slight increase in precipitation.
For a stay throughout September in Rijeka and Opatija, plan light sweaters as the cold starts to be felt during the early hours of the day.
September on the Croatian Islands
The weather is beautiful in the Croatian islands (Brac, Hvar, Korcula and Mljet). The sun is on the program and the atmosphere allows to spend pleasant moments at the beach or in town. This is especially true as the heat is comfortable all day. For night outing, one will also benefit from a weather in Croatia throughout September that is very favorable. The warmth and clear skies are suitable weather conditions for anyone to indulge in their favorite activities.
September on Inland
The weather throughout September in Croatia is deteriorating rapidly in the inland areas. Zagreb and Gospic see their mornings refresh very quickly, to the point that it is necessary to provide hot clothes to avoid shivering during morning outings. Generally speaking though, the climate is favorable throughout the month of September.
Climate in Croatia in september
Climate in Zagreb in september
In the month of september, maximum temperature is 74°F and minimum temperature is 59°F (for an average temperature of 67°F). The climate quite good in this city in this month. With 4.9in over 6 days, rainfall can happen for your trip. But this is rather reasonably and it will not be continuous.
With a good climate, the month of september is a good time to go in this city.
| September | |||
| Average temperature | 67°F | ||
| Highest temperature | 74°F | ||
| Lowest temperature | 59°F | ||
| Rainfall | 4.9in | ||
| Number of days with rainfall | 6 day(s) (20%) | ||
| Humidity | 83% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 34% | ||
| Length of day | 12:32 | ||
| Our opinion at whereandwhen.net | good |
Climate in Dubrovnik in september
In the month of september, the mean temperature in Dubrovnik is 74°F (maximum temperature is 77°F and minimum temperature is 70°F). The climate quite pleasant in that locality in this month. With 5.4in over 5 days, rainfall can happen during your trip. But this is pretty reasonably and it will not be continuous.
With good weather conditions, the month of september is a good month to go in Dubrovnik in Croatia.
| September | |||
| Average temperature | 74°F | ||
| Highest temperature | 77°F | ||
| Lowest temperature | 70°F | ||
| Sea temperature | 76°F | ||
| Rainfall | 5.4in | ||
| Number of days with rainfall | 5 day(s) (18%) | ||
| Humidity | 67% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 18% | ||
| Length of day | 12:29 | ||
| Our opinion at whereandwhen.net | good |
Climate in Croatian islands (Hvar, Brac,Mljet...) in september
In the month of september, the mean temperature in Croatian islands (Brac,Mljet...) is 74°F (maximum temperature is 76°F and minimum temperature is 72°F). The climate quite enjoyable in that area in september. With 5.4in over 6 days, rain may occur for your vacations. But this is rather reasonably and you will not be too bothered by it.
With a good climate, the month of september is a recommended month to go in Croatian islands (Brac,Mljet...) in Croatia.
| September | |||
| Average temperature | 74°F | ||
| Highest temperature | 76°F | ||
| Lowest temperature | 72°F | ||
| Rainfall | 5.4in | ||
| Number of days with rainfall | 6 day(s) (21%) | ||
| Humidity | 68% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 18% | ||
| Length of day | 12:30 | ||
| Our opinion at whereandwhen.net | good |
Climate in Plitvice Lakes National Park in september
In the month of september, the mean temperature in Plivice National Park is 61°F (maximum temperature is 72°F and minimum temperature is 52°F). The climate pleasant there in the month of september. With 5.4in over 7 days, rainfall can happen during your journey. But this is pretty reasonably and you will not be too bothered by it.
With a good climate, the month of september is a recommended month to go in Plivice National Park in Croatia.
| September | |||
| Average temperature | 61°F | ||
| Highest temperature | 72°F | ||
| Lowest temperature | 52°F | ||
| Rainfall | 5.4in | ||
| Number of days with rainfall | 7 day(s) (22%) | ||
| Humidity | 85% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 33% | ||
| Length of day | 12:31 | ||
| Our opinion at whereandwhen.net | good |
Climate in Pula in september
In the month of september, maximum temperature is 76°F and minimum temperature is 68°F (for an average temperature of 72°F). The climate nice in this city in september. With 9.4in over 9 days, you risk getting wet slightly throughout your journey. But this is reasonably and it is only of temporary showers.
With a good weather, the month of september is a good time to go in this locality in Croatia.
| September | |||
| Average temperature | 72°F | ||
| Highest temperature | 76°F | ||
| Lowest temperature | 68°F | ||
| Sea temperature | 75°F | ||
| Rainfall | 9.4in | ||
| Number of days with rainfall | 9 day(s) (30%) | ||
| Humidity | 72% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 23% | ||
| Length of day | 12:31 | ||
| Our opinion at whereandwhen.net | good |
All cities in Croatia in september
| Zagreb in september | good weather |
| Dubrovnik in september | good weather |
| Croatian islands (Hvar, Brac,Mljet...) in september | good weather |
| Plitvice Lakes National Park in september | good weather |
| Pula in september | good weather |
| Rovinj in september | good weather |
| Split in september | good weather |
| Zadar in september | good weather |
| Karlovac in september | good weather |
| Osijek in september | perfect weather |
| Rijeka in september | good weather |
| Senj in september | good weather |
| Slavonski Brod in september | perfect weather |
| Umag in september | good weather |
| Varaždin in september | good weather |
| Virovitica in september | good weather |
| Aljmas in september | perfect weather |
| Cigoc in september | good weather |
| Crikvenica in september | good weather |
| Gospic in september | good weather |
| Gradac in september | good weather |
| Kopački Rit Park in september | perfect weather |
| Našice in september | perfect weather |
| Nature Park Papuk in september | good weather |
| Ogulin in september | good weather |
| Opatija in september | good weather |
| Ploče in september | good weather |
| Poreč in september | good weather |
| Primošten in september | good weather |
Weather data for Croatia in september:
Weather data for Croatia in september is derived from an average of the weather forecast since 2009 in Croatia. There is a margin of error and these forecasts are to be considered as general information only. The weather in Croatia can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Croatia.