SeasonMapKorčula weather in September
Croatia
September in Korčula: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Korčula · #483 of 1383 destinations to visit in September · comfort 85/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Korčula in September
Notes from nearby Dubrovnik (87 km away)
Korčula doesn't have its own notes for September yet — these are about Dubrovnik, close enough to share the season.
September is the answer here. The sea is at its warmest of the whole year, the cruise ships thin out after the first week, and the city walls at 26°C are survivable. In August that same walk is a genuine health hazard.
Other months in Korčula
Korčula's forum calls July good swimming weather but the busiest stretch of the year — several regulars suggest September instead for a quieter island that's still warm enough to swim and sit out in the evening. Worth weighing if crowds matter more to you than guaranteed heat.
Add your own note from Korčula's card on the map.
Korčula climate normals — September
| Daytime high | 26°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 20°C / 69°F | |
| Feels like (high) | 27°C / 81°F | |
| Sea temperature | 25°C / 76°F | 🙂 pleasant |
| Rainfall | 116 mm / 4.6 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 16°C / 61°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 12.5 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Korčula in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Korčula's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKorčula's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Korčula in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Moreska sword dance
1 Jun – 30 SepMajor festivalA staged battle between two armies of swordsmen that the town has performed for four centuries. It runs weekly through the season at the open-air cinema, and in full on 29 July for St Theodore. Source ↗
- Season
Sea warm enough to swim
15 Jun – 5 Oct · usuallyThe swimming is off the rocks below the walls or on the south-coast beaches at Pupnatska and Zavalatica, half an hour over the ridge. September is the better half of the season.
- Season
Grk and posip harvest
25 Aug – 5 Oct · usuallyThe island grows two white grapes almost nobody else does, grk on the sand at Lumbarda and posip inland at Cara and Smokvica. The cellars are open and working through September.
Nearby, and something's on
Within 300 km of Korčula — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Korčula?
Korčula in September — FAQ
- Is September a good time to visit Korčula?
- September in Korčula: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Korčula on SeasonMap's comfort score (85/100).
- What is the weather like in Korčula in September?
- In September, Korčula averages a daily high of 25.5°C and a low of 20.3°C, with about 116.3 mm of rain over roughly 8.5 rainy days.
- What is the air quality in Korčula in September?
- Korčula has a mean US Air Quality Index of about 48 in September.
Other months in Korčula
Compare Korčula in September
Warmer or cooler than Korčula in September
Similar destinations in Southeast Europe — September
Within 300 km: Split's Summer island timetable on 1 Jun – 30 Sep, and Dubrovnik's Island ferry season around 15 Apr – 20 Oct.