Weather in Kalymnos in September
September is late summer in Kalymnos: hot and almost completely dry. Average highs reach 29°C / 84°F, with lows of around 20°C / 68°F. Expect just 1 rainy day in a typical September. The sea averages about 24°C / 75°F, warm enough for long swims. The first autumn storms can arrive, usually as short, sharp showers between long spells of sunshine. Kalymnos is a rugged, rocky island, and its limestone cliffs are famous among climbers from all over the world. You get about 12½ hours of daylight a day. Bring loose, light clothing, a wide-brimmed hat, strong sunscreen and sunglasses. When the wind picks up, a light windproof layer is handy for evenings by the water. The weather can change from one week to the next, so pack for both warm and cool days. Plan sightseeing for the early morning or evening, and keep the midday hours for the beach or a shaded taverna.
Swimming in Kalymnos in September
September is a great month for swimming in Kalymnos, with water temperatures around 24°C / 75°F. The best swimming runs through July, August and September, and the water is still close to its August peak. Masouri is a local favorite. On windy days, choose a beach sheltered from the north, where the water stays calmer. Beaches are lively but less crowded than in high summer. No wetsuit needed.
Crowds & Prices in Kalymnos in September
Crowds in Kalymnos are moderate in September, with plenty of space at the main sights and beaches. Hotel rates sit between the winter lows and the summer peak. Staying slightly outside the main town usually means better value and more space. Early mornings and late afternoons are the quietest times at popular sights. Booking a few weeks ahead is usually enough.
What's Open in Kalymnos in September
In September, ferries from Piraeus and Kos to Kalymnos run often, with extra fast boats in the peak season. The island also has an airport with flights from Athens. Everything is open, from hotels and tavernas to beach bars and boat trips. Museums and sites are open on extended summer hours. Shops in tourist areas often stay open into the evening.
Festivals & Holidays in Kalymnos in September
Late-summer village festivals continue into September, and the grape harvest gets underway. September is harvest time, with grapes picked for wine in many areas and village feasts on 8 September for the Nativity of the Virgin. In Kalymnos, these occasions are celebrated much as they are across the rest of Greece. It's a good time to see traditions that have nothing to do with tourism, from harvests to name days.
Is September a Good Time to Visit Kalymnos?
September is one of the best months to visit Kalymnos. Expect highs of around 29°C / 84°F and lows near 20°C / 68°F. The sea is warm, the weather is reliable and the summer crowds are thinner, so beaches and villages feel relaxed. It suits almost everyone, from couples to families outside school holidays. The only caveat is that a few seasonal businesses may be closed at the very start or end of the season.
Frequently Asked Questions
What time does the sun set in Kalymnos in September?
Through September, sunset in Kalymnos moves from around 7:45 pm to around 7:00 pm in Greek local time, as the evenings get shorter. In mid-September, expect it at around 7:20 pm. Masouri is a favorite spot, with the sun setting behind Telendos.
Is it still hot in Kalymnos in September?
Yes, especially in the first half of the month. September usually stays warm and sunny, and the sea is still warm from the summer. The meltemi tends to ease, nights become more comfortable, and the first autumn showers sometimes arrive late in the month, although rain is still uncommon.
Is September a good time for rock climbing on Kalymnos?
Yes, it's peak climbing season. Kalymnos is one of the world's best-known sport-climbing destinations, and September usually brings ideal conditions on the crags above Masouri. Book accommodation early.
Do I need a car on Kalymnos in September?
Not necessarily. Buses link Pothia with the main beaches and villages in September, and taxis are available, though they're busy. A car, scooter or ATV gives you more freedom to explore quieter corners, so book one early.
Is September or October better for visiting Kalymnos?
September, if you want swimming and everything open. October is quieter and cheaper, and the sea often stays pleasant early in the month, but the weather becomes more changeable and many seasonal hotels, tavernas and boat trips wind down as the month goes on.
Kalymnos Weather by Month
