Best months to visit
AprilMayJuneSeptemberOctober
May, June and September are the smart choice: warm enough sea, comfortable air, and nightlife is in full swing without the August intensity. The first two weeks of August are the most expensive and crowded period in the entire Greek islands.
Best for
Beach
June to October — sea 22-25 °C, warmest in August. South-coast beaches (Platis Gialos, Paradise) are mostly sheltered from meltemi; north-coast beaches (Panormos, Ftelia) catch the wind and waves.
Hiking
April to early June and October to early November — bare hills with sweeping views, comfortable at 18-23 °C; almost no shade in summer makes hiking taxing.
Sightseeing
April to early June and September to October — Mykonos Town and Delos at 20-26 °C, far less crowded than the August peak.
Climate notes
- Hot dry summer (June-September): less than 10 mm rain per month, highs of 27-30 °C, sustained meltemi cooling.
- Strongest meltemi in the Cyclades: peaks late July through August at 40-60 km/h, occasionally over 70 km/h; gives the island its distinctive bare windswept landscape.
- Long swimming season: deep Aegean water keeps sea temperature above 20 °C from June through October.
- Low rainfall: about 330 mm a year, falling almost entirely between October and March in short intense storms.
- Mild winter: 12-15 °C daytime in January-February with about 60 mm rain per month — many restaurants close but the island has a year-round community.
- Fire risk (July-September): moderate; the bare landscape and small size limit major fires.
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Regional notes
- Mykonos is small enough that climate is essentially uniform.
- South coast (Platis Gialos, Paradise, Super Paradise): sheltered from the meltemi by the central ridge; warmest beaches and calmest sea on most summer days.
- North coast (Panormos, Ftelia, Agios Sostis): catches the meltemi directly; popular with windsurfers, often choppy.
- Mykonos Town (Chora): exposed to wind; the windmills above town are positioned exactly to catch the meltemi for traditional flour-grinding.
Frequently asked questions
When is the best time to visit Mykonos?
May, June and September offer warm weather (23-28 °C), comfortable swimming, and a notably lower crowd peak than the first two weeks of August when prices double and clubs sell out.
Is the meltemi wind a problem on Mykonos?
It depends what you want. North-coast beaches (Panormos, Ftelia) are popular with windsurfers because of the meltemi; south-coast beaches are sheltered. Ferries to nearby islands are occasionally cancelled in strong meltemi.
Can you swim in Mykonos in October?
Yes, in the first half of October. Sea temperature averages 22-23 °C in early October, dropping to 20 °C by month's end. Most beach clubs close in mid-October.
When does Mykonos closing party season happen?
Last weekend of September into early October, when DJs do their farewell sets. Weather in late September averages 26 °C with sea at 24 °C — typically the year's best week for combining sea, sun and full nightlife.
How crowded does Mykonos get in August?
Peak is the first two weeks of August, especially around the 15 August holiday. Cruise ships add 5,000-10,000 day visitors; hotels are fully booked months in advance and prices peak.
Does it rain much on Mykonos?
Annual rainfall is about 330 mm, very low. Summer is essentially rainless. Most rain falls October-March, in short intense storms typical of the Aegean.
Is Mykonos windier than Santorini?
Slightly more so. Both islands sit in the strongest meltemi corridor of the Cyclades; Mykonos has fewer sheltered coves, and its open terrain offers no shelter.
What is winter like on Mykonos?
Mild but with strong storms. December-February averages 13-15 °C daytime, 8-10 °C nights, with about 60 mm of rain per month. The island has a small year-round community but most beach clubs and many tavernas close.
Climate data: Open-Meteo · 2020–2025