Kos in September: the weather and best activities for your holiday

When one thinks of Greece, ancient ruins, olive groves, and sun-drenched beaches often come to mind. Yet, there's a gem tucked away in the Aegean Sea that tends to slip under the radar – the island of Kos. This tranquil island, rich in both history and natural beauty, provides a Greek experience like no other.

September ushers in a sweet spot in the calendar, when the intensity of the summer heat starts to dwindle, and the heavy influx of tourists begins to ebb away. So, is it a good time of year to visit Kos? Absolutely! It's a month that combines the tail-end of summer warmth with a soothing introduction to the charms of the autumn season.

Kos weather in September

The temperature during September is typically a pleasant mix of summer warmth and cooler nights. The daytime sees a comfortable high of around 26°C (79°F) which provides a perfect backdrop for outdoor exploration, whether that's cycling through olive groves or meandering through historical sites. As the sun dips over the horizon, temperatures tend to fall to a refreshing 17°C (63°F), inviting you to enjoy a relaxing dinner al fresco under the star-studded sky.

Kos weather temperature in September

The island relishes approximately 10 to 11 hours of sunshine daily in September. Sunbathers can rejoice, as the sun's intensity is still notable, although not as overpowering as the peak summer months. The shift from summer to autumn offers a softer sunlight, creating a gentle warmth that leaves a kiss of a tan on your skin.

The sunrise and sunset during September are sight to behold. The sun typically rises around 7:00 AM and sets close to 7:30 PM, offering ample daylight for exploration.

Kos sunshine hot in September

Humidity levels in September are moderate, typically around 60%. This level of moisture in the air is comfortable and manageable for most people. Combined with the mellow September temperatures, the climate becomes agreeably balmy rather than sweltering or sticky.

Rainfall in September is scarce, with Kos receiving around 10mm of precipitation spread over 3 to 4 days in the entire month. You'll likely encounter bright blue skies, rather than grey clouds, on your trip, making it an opportune time to explore the island without having to carry an umbrella.

Kos rain wet in September

As for the sea temperature, it remains invitingly warm, averaging around 24°C (75°F). Whether you want to dip your toes in the water or embark on an invigorating swim, the Aegean Sea is welcoming and provides an excellent opportunity for water-based activities like snorkelling or sailing.

Kos sea temperature in September

While the high season in Kos peaks in July and August, September sees a decrease in visitor numbers. This doesn't mean the island is deserted, far from it. But the bustling streets and beaches have more room to breathe, and local establishments offer a more relaxed, intimate atmosphere.

Tourists during this time of year hail mainly from Europe, with a substantial number of visitors from the UK, Germany, and the Netherlands. The lighter tourist footfall coupled with the pleasant weather makes Kos an attractive destination in September.

The lower influx of tourists also means that September can be a more cost-effective time to visit Kos. Accommodation and flight prices tend to be lower than in the peak summer months, allowing your budget to stretch further.

For families with young children, September is an ideal time to visit. The temperatures are mild enough for kids to enjoy outdoor activities comfortably, and the lesser crowds make family outings less stressful. From visiting the ancient ruins of Asklepion to exploring the 'Hippocrates' Plane Tree' in Kos Town, there are plenty of family-friendly experiences to be had.

Clothes to pack for September in Kos

Dressing for Kos in September is all about embracing the balance between summer warmth and autumn coolness. Pack lightweight clothing such as t-shirts and shorts for the daytime, when the island basks in the soft, mellow heat. As the evening rolls in, bringing a cooler breeze with it, a light jacket or a cozy shawl would be perfect for those al fresco dinners under the starry night sky.

The best months to visit Kos

The best months to visit Kos are May, June, and September. May marks the start of the warm season, yet the tourist influx is still moderate, allowing you to enjoy the island's beauty without the crowd. June brings more sun and warmer temperatures, perfect for those who wish to bask on the beaches or dive into the azure Aegean Sea. September, as already mentioned, offers an excellent blend of pleasant weather and fewer tourists, providing a more relaxed atmosphere while still enjoying the warm sea and plenty of sunshine.

The worst months to visit Kos

The months of December, January, and February are usually considered less favorable for a visit to Kos. During this time, the island experiences its coldest temperatures and the highest rainfall. Many tourist facilities and accommodations may also be closed for the off-season, and outdoor activities are limited due to the winter weather.

Fantastic activities for Kos during September

Activities in Kos in September are plentiful and varied:

Explore Kos Town: With its historical sites like the Castle of the Knights, the Ancient Agora, and the Roman Odeon, Kos Town is a journey back in time. Its vibrant squares, cozy cafes, and beautiful marina add a charming contrast to the ancient ruins.

Visit Asklepion: Just outside Kos Town, Asklepion is an ancient healing temple dedicated to Asclepius, the god of medicine. The site offers a fascinating insight into the early practices of health and healing.

Bike around Kos: Known as the "bicycle island", Kos offers numerous well-marked bike trails. Rent a bike and ride through the stunning landscapes, from the beaches to the olive groves.

Beach hopping: Kos is home to many beautiful beaches. From the family-friendly Tigaki beach to the more secluded Agios Stefanos, each has its unique charm.

Sail to Nisyros: Take a day trip to the nearby island of Nisyros, home to an active volcano. Explore the picturesque port town of Mandraki and walk the volcanic crater for an unforgettable experience.

Wine Tasting: The fertile lands of Kos produce some exceptional wines. Visit a local winery, learn about the winemaking process, and sample the fruits of the vine while enjoying the stunning island views.

Other holiday destinations recommendations for September

Get ready, fellow wanderers, because we're about to embark on an autumnal journey to five unforgettable destinations perfect for your September holiday!

Zanzibar, an archipelago off the coast of Tanzania, is a dream destination for those seeking a blend of exotic cultures and stunning landscapes. September is an optimal time to visit due to the island's warm, dry weather, ideal for lounging on its pristine beaches or exploring historic Stone Town, a UNESCO World Heritage Site. Dive into the clear turquoise waters, rich with marine life, or lose yourself in a spice plantation, intoxicated by the aroma of cloves, cinnamon, and nutmeg.

Next, let's head to Europe, where Algarve, Portugal, awaits with its breathtaking coastal views and quaint, historic towns. The summer crowds have receded by September, leaving the golden beaches, like Praia da Marinha, pleasantly uncrowded. The weather remains warm enough for you to enjoy its natural beauty, from the dramatic cliffs to the lush vineyards. Try your hand at golf in one of Algarve's world-class courses or indulge in the local cuisine, bursting with fresh seafood and robust wines.

Our next stop is Mauritius, an island paradise in the Indian Ocean. Famous for its sapphire-blue waters and powder-white beaches, September in Mauritius is springtime, meaning warm, sunny days and cooler nights. Explore the exotic wildlife at the Black River Gorges National Park, snorkel in the vibrant coral reefs, or simply unwind on the luxurious beachfront resorts.

As we return to Europe, the island of Sicily, Italy, beckons us with its rich history and culinary delights. The weather in September is comfortable for discovering ancient Greek and Roman ruins, strolling through bustling food markets, or hiking Mount Etna. You'll also find fewer tourists in the cities, giving you a more authentic experience of Sicilian life.

Our journey ends in Santorini, Greece, one of the most picturesque islands in the world. In September, the extreme heat of summer fades, but the brilliant sunlight remains, casting a beautiful glow on the island's iconic blue-domed churches and white-washed buildings. Spend your days exploring its unique volcanic beaches, wine tasting in the island's vineyards, or witnessing the world-renowned sunset in Oia village.

Each of these destinations offers something unique in September - be it the serene beaches of Algarve, the historical wonders of Sicily, the vibrant reefs of Mauritius, the cultural blend of Zanzibar, or the magical sunsets of Santorini. So pack your bags, set your out-of-office replies, and get ready to create some unforgettable autumnal memories!