SeasonMapRovinj weather in September
Croatia
September in Rovinj: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Rovinj · #575 of 1383 destinations to visit in September · comfort 83/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Rovinj in September
Notes from nearby Venice (109 km away)
Rovinj doesn't have its own notes for September yet — these are about Venice, close enough to share the season.
Venice regulars on the forum rate September highly: pleasant enough for outdoor dinners without daytime sightseeing turning unpleasant, occasional rain but rarely the kind of flooding (acqua alta) that shows up in the winter months.
Other months in Rovinj
Rovinj's forum calls late July hot and genuinely busy, though regulars say it's more comfortable after dark than some other Adriatic hotspots. The general Croatian-coast consensus on the forums: July and August can turn stifling by day, so pack for heat and don't expect much of a breeze.
Add your own note from Rovinj's card on the map.
Rovinj climate normals — September
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 62°F | |
| Feels like (high) | 26°C / 79°F | |
| Sea temperature | 24°C / 75°F | 🙂 pleasant |
| Rainfall | 145 mm / 5.7 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 15°C / 59°F | |
| Sunshine | 10 h/day | |
| Daylight | 12.5 h | |
| Wind | 15 km/h / 9 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 Rovinj 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 Rovinj'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 weatherRovinj's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Rovinj in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Sea warm enough to swim
15 Jun – 5 Oct · usuallyThe northern Adriatic runs a couple of degrees behind Dalmatia, so June is borderline and September is the better bet. Swimming here means the rocks of Zlatni rt, not sand.
- Season
Truffles and new olive oil
15 Sep – 30 Nov · usuallyHarvestWhite truffle from the Motovun forest peaks in October and November while the groves are picked and pressed, and the inland hill towns run tastings for a month. Half an hour inland, and the reason to come off-season. Source ↗
Nearby, and something's on
Within 300 km of Rovinj — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Rovinj?
Rovinj in September — FAQ
- Is September a good time to visit Rovinj?
- September in Rovinj: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Rovinj on SeasonMap's comfort score (83/100).
- What is the weather like in Rovinj in September?
- In September, Rovinj averages a daily high of 24.8°C and a low of 16.4°C, with about 145.3 mm of rain over roughly 10.2 rainy days.
- What is the air quality in Rovinj in September?
- Rovinj has a mean US Air Quality Index of about 48 in September.
Other months in Rovinj
Compare Rovinj in September
Warmer or cooler than Rovinj in September
Similar destinations in Southeast Europe — September
Within 300 km: Venice's Biennale on 9 May – 22 Nov, and Ljubljana's Open Kitchen food market around 15 Mar – 31 Oct.