Weather overview

September brings pleasant weather to the Istrian Riviera, with warm days and cooler nights creating a comfortable atmosphere. Daytime temperatures typically range around 24°C (75°F), while at night, they can drop to a refreshing 15°C (59°F). While rainfall starts to increase slightly compared to the peak summer months, it generally remains at a manageable 80mm. You'll enjoy moderate humidity levels, usually hovering around 70%, with gentle breezes from the Adriatic Sea keeping things nice and fresh.

Activities and seasonal highlights

With the weather being inviting in September, it's a fantastic time to explore the Istrian Riviera’s natural beauty and heritage. Take a leisurely stroll through the old town of Rovinj or wander the cobbled streets of Poreč, marvelling at the historical architecture. For nature lovers, the Brijuni National Park offers scenic trails and unique wildlife experiences. If you're into festivals, September brings the grape harvest and a host of wine festivals, inviting you to sample delicious local wines and traditional Istrian delicacies.

What to pack

Considering the weather, think about packing lightweight, breathable clothing for daytime adventures, such as t-shirts, shorts, and sundresses. A light jacket or jumper will be handy for cooler evenings, especially if you're exploring coastal towns. Comfortable walking shoes are ideal for navigating cobblestone streets, while packing a swimsuit allows you to take advantage of the gentle September sun at the beach. Don't forget sunglasses and sunscreen to keep the sun's rays at bay.

FAQs

Is Istrian Riviera, Croatia crowded during September?

September sees fewer tourists compared to the peak summer months, making it a pleasant time to visit without the bustling crowds.

Can you swim or enjoy outdoor activities?

Yes, you can enjoy a swim in the Adriatic Sea, and the mild weather makes outdoor activities such as hiking and cycling delightful.

What’s the best way to get around Istrian Riviera, Croatia in September?

Getting around is convenient with car hire being a popular choice, or use the local bus services for a more relaxed mode of travel. Smaller distances are easily explored on foot, particularly in the charming towns and villages.