Events in Istria in September 2026: A Guide to the Best Events
Looking for the best events in Istria in September? You’ve come to the right place. For many locals, September is the loveliest month in Istria: the sea is still warm, the crowds die down, and the events calendar fills up with festivals that happen neither in July nor in August – from a giant truffle […]
Looking for the best events in Istria in September? You've come to the right place. For many locals, September is the loveliest month in Istria: the sea is still warm, the crowds die down, and the events calendar fills up with festivals that happen neither in July nor in August – from a giant truffle frittata in Buzet to a tuna festival in Poreč. In this guide we bring you all the key dates for September 2026, along with local tips from our agency from Poreč, which has been working in Istrian tourism for more than 30 years. Events in Istria in September 2026 will make your Istrian experience complete!nce complete!
Why September Is the Perfect Month to Visit Istria
Before we get to the events themselves, here's why experienced travellers choose events in Istria in September 2026:
- The sea is at its warmest of the year after August – in early September the sea temperature still sits around 23–24 °C, so swimming stays pleasant for most of the month.
- Fewer crowds, lower prices – after 1 September accommodation prices drop noticeably, and the beaches, konobas (traditional taverns) and old town centres can breathe again.
- The white truffle season begins – Istria's most prized delicacy is hunted from September until the end of November, and September is when it all starts.
- The grape harvest – the vineyards of central and northern Istria fill up with pickers, and with the harvest come festivals dedicated to wine and grapes.
- Pleasant temperatures for excursions – cycling the Parenzana, strolling through medieval hilltop towns such as Motovun and Grožnjan or a trip to the Brijuni Islands are far more enjoyable at 25 °C than in the 35 °C heat of August.
In short: events in Istria in September bring together the best of summer and autumn. And now – the calendar.
Tunalicious Festival Poreč (7–13 September 2026)
In early September, Poreč becomes what the organisers like to call the Adriatic capital of tuna. The Tunalicious Festival is one of the most original festivals on the Adriatic because it brings together three worlds:
- Big Game Fishing – an international sport-fishing competition with crews from several countries,
- Gastronomy – a street food and fine dining offer built around tuna and seafood, prepared by top chefs,
- Music – concerts on the Poreč waterfront; the 2026 line-up includes Vojko V, Hiljson Mandela and Grupa Cambi & Giuliano, among others, with cover and tribute bands for the grand finale.
Local tip: the atmosphere is at its best at the weekend, but if you'd rather sample the food in peace, come on a weekday in the early evening. The festival takes place on the waterfront, just a few minutes' walk from the old town, so it's easy to combine your visit with a tour of the Euphrasian Basilica, a UNESCO World Heritage Site. Follow the detailed programme on the official website of the Poreč Tourist Board.
Subotina in Buzet (12–13 September 2026): The Giant Truffle Frittata
If there's one event you should see at least once in your life, it's Subotina. A centuries-old folk festival with which Buzet, officially proclaimed the City of Truffles, celebrates its town day.
Saturday, 12 September: a frittata made with 2,026 eggs
The highlight of Saturday is the preparation of a giant truffle frittata on Fontana Square: more than 2,000 eggs (the number of eggs follows the year – in 2026 there are, you guessed it, 2,026 of them) and some ten kilograms of truffles in a pan 2.5 metres across and weighing around 1,000 kilograms. The frittata is shared out among visitors, accompanied by a rich entertainment programme, local wines and rakija, and stalls run by local producers.
Sunday, 13 September: Subotina the old-fashioned way
On the second day, the streets of Buzet's old town turn into a living stage of times gone by. Participants wear original folk costumes from the turn of the 19th and 20th centuries, and old crafts come back to life: carpenters, coopers, cobblers, weavers, oil millers… All of it accompanied by traditional Istrian music and a gastronomic offer you won't find anywhere else.
Local tip: parking spaces in Buzet fill up quickly that weekend – arrive before noon or consider an organised excursion with transport included. More information on the Buzet Tourist Board website.
The White Truffle Season Begins: Truffle Days in the Truffle Zone
Subotina isn't just a festival – it also marks the official start of the season of the Istrian white truffle (Tuber magnatum), hunted from September until the end of November in the Motovun Forest and the Mirna River valley. That makes September the ideal moment for:
- Truffle hunting with truffle hunters and their dogs – an experience where you head into the forest with a licensed truffle hunter and his trained dogs in search of the "Istrian diamond", followed by a tasting. This is one of the most sought-after experiences in our excursion offer, and we warmly recommend booking in advance.
- Truffle fairs and exhibitions – throughout the autumn, Livade and the surrounding towns of the truffle zone (Buzet, Oprtalj, Motovun) host weekend fairs dedicated to truffles, with tastings, sales of fresh truffles and a cultural and entertainment programme. Check the exact autumn 2026 weekend dates in the official Istria events calendar.
- Truffle menus in the konobas – fuži and pljukanci (traditional Istrian pasta) and truffle frittata are at their peak in September; the konobas around Motovun, Livade and Buzet serve freshly shaved truffle straight onto your plate.
Local tip: at the start of the season the white truffle is only just coming into its own – prices are somewhat lower than in October and November, while the hunting experience is every bit as authentic.
Grape Festivals and the Harvest in Northern Istria
September in Istria is also harvest month. The vineyards of the Buje area, the Motovun region and central Istria fill up with the Malvazija and Teran harvest, and with the harvest come traditional festivals:
- The Grape Festival in Buje (Praznik grožđa) – a traditional multi-day festival dedicated to grapes and wine, with a parade of allegorical floats, stands of local winemakers and folk merrymaking. It is traditionally held in the second half of September; check the exact 2026 date on the Colours of Istria portal, which brings together the events of north-western Istria.
- Open cellars and tasting rooms – many wineries welcome visitors in September by prior arrangement; this is a great time for a wine tour with tastings at small family producers.
Local tip: if you'd like to experience the harvest "from the inside", ask us – we've worked with some of the winemakers and olive growers for years and can arrange a visit at harvest time, with a tasting hosted by the winemaker in person.
Weekend Media Festival Rovinj (24–27 September 2026)
To round off the month, Rovinj takes centre stage. The Weekend Media Festival, the region's largest communications festival, celebrates its 19th edition in 2026 and is traditionally held on the grounds of the former Rovinj Tobacco Factory (Ex TDR). Four days of talks, panels and workshops bring together thousands of visitors from the media, marketing and PR industries across the region, along with the famously relaxed networking and evening parties.
Why is it interesting even if you're not in the industry? Because Rovinj lives life to the fullest that weekend: the town is packed, the food and drink scene is at its peak, and the atmosphere feels like high season. If you're after a quieter Rovinj experience, choose the weekdays before the festival; if you love the buzz – this is your weekend. Programme and tickets at weekend.hr.
Tip: Velox Tours will gladly organise your programme and a visit to the Weekend Media Festival, and round out your day with a range of other activities.
Other Events in Istria in September 2026 Worth Putting in Your Calendar
Alongside the big festivals, September also offers a series of smaller events that round off your stay:
- Open-air concerts in Poreč – a cycle of open-air music events runs right up to the end of September, on the squares and in the old town.
- Sports events in Buzet – as part of the Buzet Town Days, sports events are traditionally held throughout September, including the famous hill-climb car races that draw drivers from all over Europe.
- Fishermen's festivals along the coast – throughout September, smaller places from Funtana and Vrsar to Fažana hold fishermen's evenings with live music and fresh fish from the grill. Local tourist boards publish the dates from week to week.
- The excursions most worth taking in September – boat trips along the west coast, a visit to Brijuni, cycling tours along the Parenzana, Baredine Cave and the Višnjan Observatory. All of it without the summer queues and at more pleasant temperatures.
Practical Tips for Visiting Istria in September
Weather and the sea
Early September brings daytime temperatures of around 25–28 °C and a sea that's ideal for swimming; towards the end of the month the evenings turn cooler, so pack one extra light layer. Brief showers are possible, but they rarely spoil plans for more than half a day.
Accommodation
Although the crowds are smaller, weekends with major events (the Subotina weekend, the last weekend of September in Rovinj) still fill up the available capacity – book your accommodation in good time, especially in Buzet and Rovinj.
Transport
For the festivals inland (Buzet, Motovun, Livade), a car or organised transport is practically essential; park early, or choose an excursion with transfer included and enjoy the wine and truffles without a care.
Opening hours
Some seasonal facilities (water parks, certain beach concessions) shorten their hours or close towards the end of September – check before setting off.
Frequently Asked Questions
Is it worth coming to Istria in September?
Absolutely. September combines a warm sea, smaller crowds, lower prices and events that simply don't happen in summer: the start of the white truffle season, the grape harvest and the biggest traditional festivals such as Subotina.
Can you still swim in September?
Yes – for the first two to three weeks of September the sea is pleasantly warm, and many beaches still have their facilities up and running.
What is the biggest gastronomic event in Istria in September?
Subotina in Buzet with its giant truffle frittata (12 September 2026) and the Tunalicious Festival in Poreč (7–13 September 2026) are the month's two unmissable gastro events.
When does the white truffle season begin?
The Istrian white truffle season runs from September to the end of November, and it symbolically begins with Subotina in Buzet.
Conclusion: September Is Istria at Its Best
From tuna on the Poreč waterfront and a frittata made with 2,026 eggs in Buzet to the grape harvest and the scent of freshly shaved truffle. Events in Istria in September prove that the season doesn't end on the last day of August – that's when it shows its most authentic face.
Planning a visit? As a local agency from Poreč, we'll gladly help: from private accommodation and organised excursions with transport included (truffle hunting, wine tours, boat trips, Brijuni) to advice on which weekend to pick. Get in touch and let's put your September itinerary together.
Published: 26 August 2026
