Weather in Croatia for September 2026
In general, the average temperature in Croatia at the beginning of September is 26.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.7 °C by the end of September.
Croatia experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 109.7 mm.
Is September a good time to visit Croatia? check out the best time to travel to Croatia page.
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Croatia Weather September
What’s the Weather Like in Croatia This September?
Temperatures trend during September in Croatia
September weather in Croatia day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 27° /20° | 1.5 mm | 7 | |
| 2 Sept. | Sunny | 27° /20° | 0.1 mm | 7 | |
| 3 Sept. | Sunny | 26° /20° | 0.2 mm | 7 | |
| 4 Sept. |  Partly cloudy | 26° /20° | 1 mm | 6 | |
| 5 Sept. |  Patchy rain possible | 27° /21° | 0 mm | 7 | |
| 6 Sept. | Sunny | 28° /21° | 5 mm | 7 | |
| 7 Sept. | Sunny | 27° /21° | 0.1 mm | 7 | |
| 8 Sept. | Sunny | 27° /21° | 0 mm | 7 | |
| 9 Sept. |  Moderate or heavy rain shower | 26° /21° | 8.4 mm | 6 | |
| 10 Sept. | Patchy rain possible | 25° /20° | 7.6 mm | 6 | |
| 11 Sept. | Sunny | 25° /19° | 5.3 mm | 6 | |
| 12 Sept. | Sunny | 26° /19° | 1.6 mm | 7 | |
| 13 Sept. | Sunny | 26° /19° | 6.7 mm | 7 | |
| 14 Sept. | Sunny | 24° /19° | 1.6 mm | 6 | |
| 15 Sept. | Sunny | 25° /19° | 0.1 mm | 6 | |
| 16 Sept. | Sunny | 25° /19° | 8.5 mm | 6 | |
| 17 Sept. | Moderate or heavy rain shower | 25° /18° | 10.4 mm | 6 | |
| 18 Sept. | Sunny | 24° /18° | 2 mm | 6 | |
| 19 Sept. | Patchy rain possible | 24° /18° | 3.2 mm | 6 | |
| 20 Sept. | Sunny | 24° /19° | 2.1 mm | 6 | |
| 21 Sept. | Patchy rain possible | 24° /18° | 1.1 mm | 6 | |
| 22 Sept. | Patchy rain possible | 23° /17° | 0.2 mm | 6 | |
| 23 Sept. | Sunny | 23° /17° | 2.7 mm | 6 | |
| 24 Sept. | Sunny | 22° /17° | 3.9 mm | 5 | |
| 25 Sept. | Patchy rain possible | 23° /17° | 5.6 mm | 5 | |
| 26 Sept. | Sunny | 23° /18° | 5.9 mm | 6 | |
| 27 Sept. | Partly cloudy | 24° /18° | 2.7 mm | 6 | |
| 28 Sept. | Sunny | 23° /18° | 5 mm | 5 | |
| 29 Sept. | Sunny | 22° /17° | 3.6 mm | 5 | |
| 30 Sept. |  Heavy rain at times | 22° /16° | 1.2 mm | 5 | |
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Croatia weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Sunny |
| Temperatures | 29°/23° | 24°/19° | 20°/16° |
| Rainfall | 77 mm | 110 mm | 111 mm |
| Wind | 14.3 km/h | 16 km/h | 14.8 km/h |
| Humidity | 57% | 62% | 65% |
| Rainy days | 12 days | 22 days | 17 days |
| Dry days | 19 days | 8 days | 14 days |
Planning a trip to Croatia? Discover the best time to visit
Guide for Croatia in September
In Croatia, September marks the transition from summer to autumn, bringing pleasant weather and fewer crowds, making it an ideal time to visit.
At the beginning of the month, the coastal regions, including Dubrovnik and Split, experience warm and sunny days with temperatures ranging from 25° to 28°. The sea remains comfortably warm for swimming, making it perfect for beach activities and water sports.
Inland cities such as Zagreb enjoy milder temperatures, typically ranging from 18° to 22°, creating a pleasant environment for exploring the city's historic sites and cultural attractions.
Towards the end of September, the weather in Croatia begins to cool down gradually. Coastal areas experience slightly lower temperatures, ranging from 22° to 25°, while the sea remains inviting for swimming and relaxation.
Inland regions witness a more noticeable drop in temperatures, with the range typically falling to 15° to 18°. This transition brings stunning autumn foliage to the inland areas, offering picturesque landscapes for nature enthusiasts and hikers.
Overall, September in Croatia offers a delightful blend of warm coastal days and cooler inland temperatures, making it an excellent time to explore the diverse attractions this beautiful country has to offer.
Croatia in September - FAQ
Croatia water temperatures in September
The average water temperature of the Adriatic Sea near Croatia in September is 23.9 °C. At the beginning of September temperatures are around 23.3 °C; by the end of the month they get warmer and reach 24.4 °C.
- What is the water temperature in Croatia in September?
- The average water temperature in Croatia in September is 23.9 °C.
- Can you swim in Croatia in September?
- Comfortably warm for most people. Sensitive swimmers might prefer a light rash-guard, but wetsuits are rarely needed.
What to pack to Croatia in September?
As you prepare for your trip to Croatia in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Croatia, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Croatia
UV exposure in Croatia during September
Quick links
Where is Croatia?Get accurate weather forecasts for Croatia, located at latitude 42.641 and longitude 18.109. Stay updated with localized weather information tailored for Croatia.