Zagreb Weather in September
Zagreb in September sees high temperatures, with highs around 23°C (73°F) and overnight lows of 12°C (54°F). Rainfall is at its peak this month, around 102 mm (4 in) on average, so waterproofs are essential.
Rainfall in Zagreb in September
An umbrella might come in handy since it is the wettest month of the year. Expect around 12 days of rain based on historical data, with 102 mm (4 in) average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Zagreb in September
September in Zagreb brings high temperatures, with highs of 23°C (73°F) and nights around 12°C (54°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Zagreb in September
With approximately 190 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Zagreb in September
Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.If your ideal day consists of dry skies and pleasant temperatures, May, June, July and August typically offer the best circumstances for Zagreb.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Zagreb's climate page.
Zagreb Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
23°C (73°F)
Chance of Rain
40%
Precipitation
102 mm (4 in)
Rainy days
12 days
Humidity
77%
Windspeed
2 m/s (4 knots)
Sunshine
190 hours
Percentage Sunshine
54%
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Zagreb typically drop from around 24°C (75°F) at the start of September to approximately 20°C (68°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 13°C (55°F).
Average temperatures in September
Historical weather for Zagreb in September
Browse day-by-day weather records for Zagreb spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Zagreb historical weather extremes in September
The extremes listed below come from historical weather data collected in Zagreb from 2006 through 2025.
- The warmest day in September was on September 3, 2024, with a maximum of 35°C (95°F).
- The lowest daytime temperature in September was 11°C (52°F), recorded on September 30, 2013.
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 26, 2018).
Best Places in Croatia in September
Find out more about the weather in Croatia and which places have the best travel conditions in this month. See all of Croatia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Zagreb in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Zagreb in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Zagreb's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Zagreb climate overview or explore weather in Croatia.
