Greece in September brings 24-30°C temperatures, 15-30mm rainfall, and moderate tourist crowds. Here's everything you need to know to plan the perfect September trip to Greece — from weather patterns and costs to events and packing essentials.
Temperature & Rainfall
Greece in September averages 24-30°C with approximately 15-30mm of rainfall. Warm sea temperatures. Days are generally pleasant with moderate daylight hours. The weather makes September one of the best times to visit.
Tourist Levels & Pricing
Tourist levels are moderate in September. A sweet spot for value — prices are reasonable and you won't fight crowds at major sites. Booking 3-4 weeks ahead is usually sufficient.
Prices are near average — you'll find good deals without the peak-season markup.
Top Top Things to Do
Continue planning your Greece trip
Top highlights: Warm sea temperatures, smaller crowds, lower prices, grape harvest.
September is particularly good for outdoor activities, hiking, and nature exploration. Beach activities and water sports are at their best.
Your Packing List
Essential packing list: Summer clothing, swimwear, light cardigan for ferry rides. Don't forget a reusable water bottle — hydration is key in the warmth.
Is It Worth Visiting?
Yes — September is one of the best months to visit Greece. The combination of pleasant weather, manageable crowds, and fair prices makes it ideal for most travelers.
Early vs Late September: Greece Is Really Two Different Months
Treating September as one block is the mistake most guides make. The first half is essentially August with thinner crowds: Athens still runs an average high around 29C with lows near 19C, the Aegean sits at roughly 25C (its warmest of the year), and the meltemi wind, though weaker than midsummer, can still gust hard enough to cancel small high-speed ferries on Cyclades routes like Paros to Mykonos. The back half is the genuine reward, when heat eases, the wind settles, and the sea stays swimmable.
The honest catch is pricing. On Santorini and Mykonos, September now sits close to peak for both crowds and room rates, so the 'great-value' label applies far more to the mainland, Peloponnese, and lower-profile islands than to the postcard pair. Two more things worth timing around:
- The final week starts the wind-down on smaller islands, when a few shops, tavernas, and ferry frequencies begin tapering ahead of the late-October close.
- September is grape harvest across regions like Nemea and Naoussa, so wineries are busy and worth a visit rather than a closure to dodge.
Go late September, skip the two famous islands if your budget is tight, and you get the warm sea without August prices.
FAQ
What is the weather like in Greece in September?
Temperatures range from 24-30°C with about 15-30mm of rainfall. Warm sea temperatures.
Is September too crowded in Greece?
Crowd levels are moderate. You'll find a good balance of atmosphere without overcrowding.
What should I pack for Greece in September?
Summer clothing, swimwear, light cardigan for ferry rides.
📅 Other months: Greece in October · Greece in June · Greece in May
Greece in September: the warmest sea, fewer crowds
September might be the best month in Greece — the sea is at its warmest after a long summer, the peak crowds have gone home, and prices ease while the weather stays glorious.
Weather & what it's like
Warm and settled — 25-29°C early month, calm seas, golden light. Late September cools gently and ferry schedules begin to thin.
Crowds & events
Far calmer than August, with better value. It's grape-harvest time, and the islands feel relaxed again — ideal for combining swimming with sightseeing.
What to pack
Summer clothes, swimwear, and a light layer for later evenings.
Greece In September FAQ
Is September a good time to visit Greece?
One of the best — warmest sea, thinner crowds and lower prices.
Can you swim in Greece in September?
Absolutely — the sea is at its warmest of the year.
Plan Your Greece Trip
More Greece guides: Best Time to Visit Greece · How Much Does a Trip to Greece Cost?
📖 Read our Complete Travel Guide to Greece for the full picture.
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Written by
John Morrison is the founder and lead travel writer at Packzup. Over the past decade he has explored destinations across Africa, the Americas, Asia, Europe, the Middle East, and Oceania — always self-funded, never on a press trip.