Best Beaches in Turkey to Swim in September

Ömer Faruk Kino
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Turkey is a favourite destination for holidaymakers from all over the world during the summer months. However, most people limit their holidays to July and August. Yet true holiday enthusiasts know very well that September is one of the most ideal times for a beach holiday in Turkey. The intense heat of summer is behind us, the crowds begin to thin out, and the sea is still as warm and inviting as it is in summer. So, where can you swim in Turkey in September? What are the best beaches to swim in Turkey in September? The answer to this question lies along both the Mediterranean and Aegean coasts.

In this article, we will discover the most beautiful beaches, coves, shores and towns to swim at in Turkey in September. If you are also planning a holiday in September, this guide-style article is just for you!

Sea Water Temperatures in Turkey in September - Can You Swim in Turkey in September?

The most important indicator for determining whether you can swim in the sea in September is the sea water temperature. Turkey's southern coastline in particular still enjoys summer-like temperatures in September.

  • Çanakkale and Northern Aegean: Average water temperature is around 23–24 °C. On some days, it can reach 26–27 °C.

  • Çeşme and İzmir coasts: Average water temperature is 23 °C. The sea, which warms up throughout the summer, remains warm until mid-September.

  • Antalya – Kaş, Kemer, Alanya: Sea water temperature is around 29–30 °C. It is almost indistinguishable from the summer months.

  • Muğla – Bodrum, Fethiye, Datça: Average 25–27 °C; the Fethiye and Ölüdeniz region in particular stands out for its water temperature.

  • Mersin coast: The eastern Mediterranean still has one of the warmest seas in September.

In light of this data, the answer to the question ‘Can you swim in the sea in Turkey in September?’ is definitely ‘yes’. Moreover, you can swim in a more pleasant atmosphere without the oppressive heat.

1. Kaş – Antalya's Turquoise Paradise

Kaş is one of Turkey's most special coastal towns and an ideal destination for swimming in September. The summer crowds thin out, daytime temperatures hover around 27–30°C, and evenings bring a gentle coolness. The seawater still retains its summer warmth and is perfect for swimming.

Kaş's most famous beach is Kaputaş Beach. With its deep blue sea, turquoise hues and golden sand, Kaputaş is one of Turkey's most photographed beaches. Located between rocky cliffs resembling a canyon, the beach offers both an immersive natural experience and a peaceful seaside retreat. Although reaching the beach can be a bit challenging, the scenery and the sea experience are definitely worth it.

Patara Beach is one of the longest beaches not only in Turkey but in the world. With its approximately 18 km long sandy shore, it is an ideal place for walking, sunbathing and swimming. Patara is also a breeding ground for loggerhead sea turtles. With the crowds thinning out in September, it becomes much easier to observe these natural beauties.

Other notable beaches in Kaş include Küçük Çakıl, Büyük Çakıl, Akçagerme, and Hidayet Koyu. While Büyük Çakıl is favoured for its proximity to the city centre, Hidayet Koyu and Akçagerme offer a more tranquil seaside experience. Kaş is also known as one of Turkey's best diving spots for diving enthusiasts. September is an ideal time to observe underwater life.

Kaş offers not only sea and beaches, but also a holiday intertwined with history and nature. With its ancient Lycian ruins, hiking trails and magnificent views, Kaş is a unique destination for those wishing to holiday in September.

2. Fethiye – The Peaceful Lagoon of Ölüdeniz

Fethiye is one of Muğla's most popular holiday resorts and is perfect for both beach and nature holidays in September. Daytime temperatures are around 28–30°C, dropping to 20–22°C in the evenings. The seawater is still at an ideal temperature for swimming.

Ölüdeniz, with its world-famous lagoon, is the symbol of Fethiye. Quieter in September, Ölüdeniz, with its clear turquoise colour and calm waters, is suitable for both swimming and water sports such as canoeing or sailing. Paragliding activities from Babadağ, combined with the sea view, offer an unforgettable experience.

Other beaches and coves in Fethiye are also a must-see in September. Belcekız Beach, adjacent to the Ölüdeniz lagoon, offers a quiet and spacious area. Butterfly Valley is enchanting with both its nature and sea; it is an ideal spot for those who want to combine walking and swimming experiences. Among the lesser-known coves, Deve Beach and Soğuksu Cove are suitable for those seeking a peaceful holiday away from the crowds.

Fethiye is also a rich destination for nature lovers and history buffs. The Lycian Way hiking trail offers a unique opportunity for those wishing to hike in the natural surroundings of Ölüdeniz. Ancient cities and historical ruins make Fethiye not just a seaside holiday destination but also a cultural holiday route.

3. Bodrum – The Aegean's Energetic and Cultural Route

Bodrum is known as the jewel of the Aegean and is a perfect destination for swimming in September. The air temperature is around 26–28°C during the day, with a slight coolness in the evenings. The seawater is still at summer temperatures of 25–26°C, providing ideal conditions for swimming.

One of Bodrum's most popular beaches is Bitez Beach. With its shallow waters and calm waves, it is particularly suitable for families. Ortakent Beach attracts visitors with its wide sandy beach and tourist facilities. Those looking for a livelier atmosphere may prefer Gümbet Beach, famous for its nightlife and water sports.

Bodrum is rich not only in terms of the sea but also in terms of culture and history. Historical structures such as Bodrum Castle and the Mausoleum of Halicarnassus transform the region into a cultural route. In addition, there are many small coves and beaches on the Bodrum Peninsula; among these, Aspat Cove, Akyarlar and Torba stand out. In September, these coves offer a peaceful and enjoyable sea experience, away from the summer crowds.

Bodrum is also quite rich in terms of gastronomy. Fresh fish, Aegean meze and olive oil dishes make your holiday even more unforgettable. September is the ideal time to combine both a beach and a cultural holiday in Bodrum.

4. Çeşme – Izmir's White-Sandy Pearl

Although Çeşme is crowded, especially during the summer months, it takes on a much calmer and more peaceful atmosphere in September. The air temperature is around 27–28°C during the day and drops to 21–23°C in the evenings. The seawater is still quite suitable for swimming at 23–24°C.

Çeşme's most famous beach is Ilıca Beach. It stands out with its warm sea, thermal properties, white sand and wide beach area. Altınkum Beach is an ideal spot for sunbathing all day and enjoying the sea. For those seeking quieter coves, Ayayorgi Cove stands out with its natural beauty and peaceful atmosphere.

Çeşme is not only a seaside holiday destination but also an ideal spot for water sports such as windsurfing and kiteboarding. Alaçatı, in particular, is world-renowned as a windsurfing centre. Furthermore, in September, the streets of Alaçatı, with its stone houses, boutique hotels, and cafés, add a special touch to your holiday.

In Çeşme, local delicacies enrich your holiday as well as the sea. Izmir herb cheeses, seafood and Aegean meze should definitely be experienced during dinner. September makes Çeşme the ideal time for both a beach and a cultural holiday.

5. Datça – The Capital of Tranquillity and Natural Beauty

Datça is unique in terms of both climate and sea characteristics, as it is located at the point where the Aegean and Mediterranean Seas meet. In September, daytime temperatures range from 27–29 °C, dropping to around 20–22 °C in the evenings. This creates the ideal environment for enjoying the sea during the day and taking a cool stroll in the evening. The sea temperature is still quite suitable for swimming.

Palamutbükü stands out among Datça's most famous beaches. With its long, pebbly shore and crystal-clear sea, it promises a very peaceful holiday in September. It is particularly famous for its fish restaurants; eating fresh fish after a day at the beach is a unique pleasure.

Another popular area, Hayıtbükü, is known for its tranquillity and natural beauty. Surrounded by small guesthouses, boutique hotels and rustic restaurants, this cove makes you feel as if time has stood still. Ovabükü is a continuation of Hayıtbükü, a quieter cove. It is ideal for those who want to get away from the crowds.

Datça offers not only the sea but also a different kind of holiday experience with its nature walks, almond orchards, and historical sites such as the ancient city of Knidos. September is the best time to discover the tranquillity of Datça.

6. Bozcaada – The Romantic Getaway of the Northern Aegean

Bozcaada is one of the finest examples of the ‘slow living’ concept in Turkey. In September, the grape harvest begins, and the scent of grapes spreads across the island. For those wishing to enjoy both a seaside holiday and gastronomic tourism, Bozcaada is a unique destination in September.

Ayazma Beach is the most popular choice for swimming. With its fine sand and clear sea, it is crowded even in the middle of summer, but in September it takes on a much calmer atmosphere. Habbele Beach and Akvaryum Cove are ideal for those who want to see the more natural, unspoilt side of the island. Aquarium Cove takes its name from the colourful fish in the sea; it is unique for snorkelling.

Along with enjoying the sea, you must explore the streets of Bozcaada. Stone houses decorated with colourful flowers, boutique wineries and small cafés add a unique romanticism to the island. Watching the sun set from Polente Lighthouse in the evening is an indispensable ritual of an island holiday.

In September, Bozcaada offers not only a seaside holiday but also an experience filled with tranquillity, wine, and culture.

7. Ayvalık – The Long Beaches of Sarımsaklı

Ayvalık, one of the most beautiful holiday resorts in the Northern Aegean, is particularly notable for its proximity to Istanbul. In September, the weather in Ayvalık is still warm enough to rival summer, with daytime temperatures hovering around 27–28°C. The sea temperature is still warm from the summer, making swimming a pleasure.

Sarımsaklı Beach is Ayvalık's most famous seaside destination. With its wide sandy shore stretching for approximately 7 kilometres, it is one of Turkey's longest beaches. Its fine golden sand and shallow waters make it particularly suitable for families. In September, Sarımsaklı is much more peaceful than in the summer months.

Apart from that, Cunda Island is a must-see for both beach and cultural holidays. Ortunç Bay or Patriça Bay in Cunda stand out for their tranquillity. Walking through Cunda's stone streets at sunset, eating the famous Ayvalık toast or tasting olive oil-based Aegean meze makes a September holiday unforgettable.

Ayvalık is not just a seaside holiday destination; it is a wonderful choice in September for those who want to experience culture, gastronomy and nature tourism all at once.

8. Mersin – The Mediterranean's Economical and Warm Holiday Destination

Mersin is one of the cities that still enjoys summer weather in September. Located on the eastern Mediterranean, the seawater temperature is around 29–30 °C. Especially at the end of summer, the crowds thin out and the region offers a more economical holiday alternative.

One of Mersin's most popular beaches is Kızkalesi Beach. Korykos (Kız) Castle, located a few hundred metres off the shore, adds both historical and tourist appeal to the area. It is possible to swim and spend time against a historical backdrop.

In addition, Susanoğlu Beach stands out with its fine sand and clean sea. The Erdemli beaches are suitable for families, with wide sandy shores. For nature lovers, Narlıkuyu Cove is a pleasant alternative with its deep blue sea and fish restaurants.

Mersin is much more affordable compared to luxury holiday resorts. Therefore, it is ideal for those who want a budget-friendly but warm seaside holiday in September.

9. Marmaris and Selimiye – The Most Beautiful Shades of Turquoise

Marmaris is one of Turkey's most well-known holiday resorts. Although it is quite crowded during the summer months, it calms down in September. Daytime temperatures are 27–29 °C, while evenings start to cool down. The seawater still retains its summer warmth.

İçmeler Beach is popular due to its proximity to the city centre and its clean sea. Turunç Beach offers a peaceful cove surrounded by lush green nature. Kızkumu Beach is a unique natural formation; there is a strip of sand in the middle of the sea that you can walk along. This makes it ideal for both taking photographs and enjoying a different kind of sea experience.

One of Marmaris' most special places is Sedir Island (Cleopatra Beach). According to legend, the golden sands on this beach were brought specially from Egypt for Cleopatra. This beach, under UNESCO protection, is one of Turkey's most exquisite natural beauties.

For those seeking a more peaceful experience, Selimiye Village is a must-see. With its small fishing village atmosphere, boutique hotels and quiet coves, Selimiye is perfect for those who want to get away from the crowds. Eating fish on the shore of Selimiye at sunset is an unforgettable experience.

Marmaris and its surroundings offer different options for those seeking both lively and peaceful holidays in September.

Can You Swim in the Sea in Turkey in September?

Swimming in the sea in Turkey in September is the best part of the summer holiday. The temperatures are not stifling, and the sea is still warm and turquoise. The crowds thin out, prices drop, and nature offers the most beautiful colours of autumn.

Destinations such as Kaş, Fethiye, Bodrum, Çeşme, Datça, Bozcaada, Ayvalık, Mersin and Marmaris are excellent choices for a beach holiday in September. Whether you are looking for an active holiday or a peaceful and relaxing getaway, September offers everything you could wish for.

Can you swim in the sea in Turkey in September? The answer is definitely yes. And perhaps it's the most enjoyable holiday period of the year!

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