Weather in Syros in September
September is late summer in Syros: warm and almost completely dry. Average highs reach 26°C / 79°F, with lows of around 21°C / 70°F. Rain is rare, with only 1 wet day in an average September. In the water, expect around 24°C / 75°F, warm enough for long swims. Syros is the capital of the Cyclades, and Ermoupoli is a real, lived-in town all year round. The summer winds ease, and the light turns soft and golden. Daylight lasts about 12½ hours. Pack summer clothes, a light layer for the evenings and good sun protection. When the wind picks up, a light windproof layer is handy for evenings by the water. Mornings and evenings get noticeably cooler as the month goes on. The weather can change from one week to the next, so pack for both warm and cool days. It's pleasant to be outside from morning to evening, with sun protection at midday.
Swimming in Syros in September
Expect the sea around Syros to be about 24°C / 74°F in September, comfortable for long swims. The best swimming runs through July, August and September, and the water is still close to its August peak. Good spots include Galissas and Kini. When the meltemi blows, north-facing beaches get rough, so head for sheltered bays on the south side. Beaches are lively but less crowded than in high summer. You won't need a wetsuit.
Crowds & Prices in Syros in September
September is a shoulder month in Syros, busy enough to feel lively but well below the summer peak. Prices are noticeably lower than in high summer, and there's more choice of rooms. Weekdays are calmer than weekends at the most popular spots. Early mornings and late afternoons are the quietest times at popular sights. You can often book at short notice, except around holidays.
What's Open in Syros in September
In September, ferries from Piraeus and Rafina to Syros run often, with extra fast boats in the peak season. The island also has an airport with flights from Athens. It's the full season, so hotels, restaurants, beach bars and excursions are all running. Archaeological sites and museums are on their longer summer hours. Shops in tourist areas often stay open into the evening.
Festivals & Holidays in Syros in September
September is harvest time, with grapes picked for wine in many areas and village feasts on 8 September for the Nativity of the Virgin. Late-summer village festivals continue into September, and the grape harvest gets underway. In Syros, these occasions are celebrated much as they are across the rest of Greece. As the season quietens, local life takes over again, with markets and harvest gatherings.
Is September a Good Time to Visit Syros?
Yes, September is an excellent choice for Syros. In numbers: highs of about 26°C / 79°F, lows of 21°C / 70°F and rain on around 1 day in a typical September. You get warm water and summer weather with fewer people and better prices than in high season. It's ideal for beach days, swimming and exploring Ermoupoli. If you want the absolute peak of summer life, July and August are busier, but most travelers will prefer September.
Frequently Asked Questions
What time does the sun set in Syros in September?
Through September, sunset in Syros moves from around 7:50 pm to around 7:05 pm in Greek local time, as the evenings get shorter. In mid-September, expect it at around 7:30 pm. The west-coast bays of Kini and Galissas are the best places to watch it.
Is it still hot in Syros 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.
Can I visit Ermoupoli in September?
Yes. Ermoupoli is at its liveliest in September, but also at its busiest. Explore in the morning or after sunset, when it's cooler and the atmosphere is at its best. Its grand Miaouli Square and town hall recall its past as Greece's leading port.
Do I need a car on Syros in September?
Not necessarily. Buses link Ermoupoli 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 Syros?
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.
Syros Weather by Month
