Search flights, hotels & activities for Istria
Compare flights, hotels, cars, and activities in one place.
500+airlines & travel sites compared
21,000+routes tracked
€0booking fees from us
Freeprice drop alerts
Things to Do in Istria in September
Real historical weather for Istria in September: average highs of 24°C and lows of 21°C, with around 133mm of rain (averaged over the last 3 years).
24°C
Average high
21°C
Average low
133mm
Typical rainfall
Real things to do in Istria in September
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad

Romans, Habsburgs and Mussolini Self Guided Tour of Trieste
★ 5.0(2 reviews)· 4 hrs
From €6

Private Sparkling Wine Tasting in Istria
★ 5.0(7 reviews)· 1 hr
From €22

Truffle hunting & cooking tour
★ 5.0(284 reviews)· 3 hrs
From €120

Istrian hill top cities tour with truffle and olive oil tasting
★ 4.9(24 reviews)· 7 hrs
From €97

Experience Slovenian Coast line with Wine Tasting from Trieste
★ 4.9(62 reviews)· 7 hrs
From €152

Postojna Cave & Predjama Castle - Shore Excursion from Trieste
★ 4.8(24 reviews)· 6 hrs
From €115

Exploration of the Istrian Coast Poreč Rovinj Lim fjord and Vrsar
★ 4.8(36 reviews)· 6 hrs
From €40

Sunset Boat Trip with Dolphin Watching in Novigrad
★ 4.5(2 reviews)· 2h 30m
From €30

Trieste Walking Tour with Audio and Written Guide by a Local
★ 4.5(97 reviews)· 3 hrs
From €7

Private Slovenia's Coast Wine and Food Tasting
· 5 hrs
From €165
Real listings from Viator, including live ratings and prices — clicking through takes you to book directly.
Plan the rest of your trip
Continue planning your trip to Istria
Same destination, real availability — no need to search again.
FAQs — Istria in September
Based on real historical data (averaged over the last 3 years), expect highs around 24°C and lows around 21°C, with roughly 133mm of rain.