Split, Croatia in September - The weather and is it a good time of year to visit?

Split, a vibrant coastal city in Croatia, offers a captivating blend of ancient history and modern Mediterranean lifestyle. At its core stands Diocletian's Palace, a UNESCO World Heritage site that forms the living heart of the old town. As you wander through the labyrinthine streets, you'll discover a harmonious mix of Roman ruins, medieval churches, and bustling squares filled with cafes, shops, and restaurants, all set against the backdrop of the shimmering Adriatic Sea.

September is an excellent time to visit Split, as the peak summer crowds begin to thin out while the weather remains warm and pleasant. You can explore the city's attractions and enjoy its beaches without the intense heat and bustle of July and August. The pace becomes more relaxed, allowing for a deeper appreciation of Split's culture and history. However, be aware that some seasonal businesses may start to wind down their operations towards the end of the month.

Overview of Split's Climate in September

September in Split marks the transition from summer to early autumn, bringing generally warm and sunny weather with a gradual cooling trend. The month offers a perfect balance of comfortable temperatures and reduced humidity, ideal for exploring the city and its surroundings. While still predominantly dry, there's a slight increase in the chance of rainfall compared to the peak summer months.

During September, Split experiences pleasantly warm temperatures that are ideal for a range of activities. The average daytime high temperature typically ranges from 24C to 27C (75F to 81F), providing comfortable conditions for sightseeing, beach visits, and outdoor dining. As evening approaches, temperatures cool down to a mild 16C to 19C (61F to 66F), perfect for enjoying Split's vibrant nightlife or a leisurely stroll along the Riva promenade.

These moderate temperatures make September an excellent time to visit Split. You can comfortably explore the historic centre, hike in nearby natural areas, or relax on the beaches without the sweltering heat of midsummer. It's worth noting that early September tends to be warmer, feeling more like summer, while late September can bring cooler days that hint at the approaching autumn. Overall, the weather is generally pleasant and conducive to a wide range of activities throughout the month.

In September, Split still enjoys a good amount of daylight, though the days are noticeably shorter than in the peak summer months. At the beginning of September, you can expect about 13 hours of daylight, which decreases to around 11.5 hours by the end of the month. The sun typically rises between 6:15 AM and 6:45 AM and sets between 7:15 PM and 6:30 PM, depending on the time of the month.

Split is known for its abundant sunshine, and September doesn't disappoint in this regard. On average, you can expect about 8 to 9 hours of sunshine per day, providing ample opportunity for outdoor activities and sightseeing. While clear, sunny days are common, you might occasionally experience some cloud cover, especially towards the end of the month. However, prolonged overcast conditions are relatively rare. This combination of sunny days and mild temperatures creates ideal conditions for exploring Split and its surrounding areas.

September in Split sees a slight increase in precipitation compared to the drier summer months, but rainfall is still relatively low. On average, the city receives about 60-70mm of rain during this month. You can expect rain on about 6 to 8 days throughout September, with the likelihood of precipitation increasing slightly as the month progresses.

When rain does occur, it's often in the form of short showers rather than prolonged periods of rainfall. Heavy downpours can happen but are not frequent. Despite the occasional rainfall, humidity levels remain comfortable, typically ranging from low to moderate. This combination of mostly dry weather with occasional refreshing showers contributes to the pleasant climate Split experiences in September.

The Adriatic Sea around Split remains invitingly warm in September, with average water temperatures ranging from 23C to 25C (73F to 77F). These temperatures are very comfortable for swimming and engaging in various water activities, making September an excellent time for beach enthusiasts.

Early September often sees sea temperatures at their peak, nearly matching those of August. As the month progresses, the water gradually cools, but it remains pleasant for swimming throughout September and even into early October. The warm sea temperatures, combined with the comfortable air temperatures and reduced crowds, make this an ideal time for enjoying Split's beaches and coastal activities. Whether you're interested in swimming, snorkelling, or trying water sports, the sea conditions in September are generally favourable and enjoyable.

Clothes to pack for September in Split

When packing for Split in September, think layers. Daytimes can still be quite warm, so pack lightweight clothing such as t-shirts and shorts. However, as temperatures can dip in the evenings, it's a good idea to bring along a light jacket or sweater. A sturdy pair of walking shoes is essential for exploring the cobblestone streets and trails around Marjan Hill.

The best months to visit Split

For the ideal blend of fine weather, fewer crowds, and manageable prices, the best months to visit Split are May, June, and September. May heralds the arrival of spring, with its blossoming landscapes and rising temperatures. June is typically sunny with perfect beach weather, yet without the full crush of summer tourists. September offers a sweet spot of warm days, cooler nights, and more tranquil streets, plus the sea is still warm from the summer heat.

The worst months to visit Split

August might be considered the least ideal month to visit Split. The combination of sweltering heat, crowded beaches, and heightened prices due to peak season can make for a less-than-ideal vacation. It's also when locals often take their holidays, which can lead to some restaurants and shops being closed.

Fantastic activities for Split during September

Diocletian's Palace Tour: This UNESCO World Heritage site, built in the 4th century, is a must-visit. Roam through ancient streets, explore subterranean cellars, and discover the rich history within its walls.

Marjan Hill: This green oasis offers hiking trails with panoramic views of the city and the Adriatic Sea. Its less crowded in September, making it a perfect time for a peaceful trek.

Riva Promenade: Stroll along the bustling waterfront, with its line-up of cafes, restaurants and shops. In September's pleasant evenings, it's a beautiful spot to enjoy a leisurely coffee or dinner.

Beach Visits: The sea is still warm in September, making it an ideal time for a beach day. Try Bacvice Beach for its sandy shores and vibrant atmosphere, or Kasjuni Beach for a more serene experience.

Split City Museum: Housed in a Gothic palace, this museum showcases Split’s history from Roman times. Its less crowded in September, making your visit more comfortable.

Day Trip to Krka National Park: Just an hour's drive from Split, this park boasts stunning waterfalls and abundant wildlife. September's cooler temperatures make it a fantastic time to explore.

Visit Trogir: A short journey from Split, Trogir is a beautifully preserved medieval town, listed as a UNESCO World Heritage site. It's quieter in September, providing a more relaxed exploration.

Sailing: Take a sailing trip around the picturesque Dalmatian islands. The pleasant September weather makes it a great time for a nautical adventure.

Fish Market: Visit Split's bustling fish market early in the morning for a fascinating insight into local life. It's less crowded in September, offering a more authentic experience.

Wine Tasting: Croatia's wine tradition dates back thousands of years. Visit a local winery to sample indigenous grape varieties.