The best time to visit Milos is late May to early July and September to mid-October: the sea is warm (22 to 25 °C), the weather is settled, the meltemi wind is at its gentlest, and the island is busy without being full. July and August are hotter, windier and crowded but still wonderful if you plan around the wind. May and late October are quiet, cheaper and beautiful, with cooler water and a few closed tavernas. This guide goes month by month with real numbers, then explains the one factor most guides skip: the meltemi, and what it means for beach days and boat days.
Key Takeaways
- Sweet spots: June and September. Air 27 to 29 °C, sea 22 to 24 °C, long days, calm mornings, rooms and boats available.
- Peak: July and August. Sea at its warmest (24 to 25 °C), but the meltemi blows hardest, prices peak and Milos sells out. Book months ahead.
- Shoulder: May and October. Air 23 to 24 °C, sea 18 to 22 °C, quiet beaches, lower prices. Some tavernas and boat operators open late May and close mid-October.
- The meltemi is a dry north wind that blows June to September, strongest in July and August, building through the afternoon. It decides which beaches are calm (south coast) and which boat routes are on (Kleftiko in the morning, south coast coves after lunch).
- Rain is essentially zero from June to September and light in May and October.
- For Kleftiko by boat, pick June, September or early October, and go in the morning.
Contents
Milos weather month by month
| Month | Air min / max °C | Sea °C | Rain days | Sun hours / day | Wind |
|---|---|---|---|---|---|
| January | 9 / 13 | 16 | 7 | 4 | Winter storms |
| February | 9 / 14 | 15.5 | 7 | 5 | Winter storms |
| March | 10 / 16 | 15.5 | 5 | 6.5 | Variable |
| April | 12 / 19 | 16.5 | 4 | 8.5 | Variable, first northerlies |
| May | 16 / 24 | 18.5 | 2 | 9.5 | Light, meltemi begins late month |
| June | 20 / 29 | 22 | 0 | 11 | Meltemi, moderate |
| July | 23 / 30 | 24 | 0 | 12 | Meltemi, strongest |
| August | 23 / 30 | 25 | 0 | 11.5 | Meltemi, strong |
| September | 21 / 27 | 24 | 1 | 9.5 | Meltemi fading |
| October | 17 / 23 | 22 | 2 | 7.5 | Calm spells, first southerlies |
| November | 13 / 19 | 19.5 | 6 | 5.5 | Autumn lows |
| December | 10 / 15 | 17.5 | 10 | 4 | Winter storms |
Figures are long-term monthly averages for Milos; individual days vary. Sea temperature lags the air by about a month, which is why September water is warmer than June’s.
Spring: April and May
April is green, wild-flowered and quiet, with warm days and cool nights. Swimming is for the brave (16 to 17 °C) and most beach tavernas are shut. Easter, when it falls in April, is the exception: Greek families come, the villages fill, and it is a wonderful time to be in Plaka.
May is the first real month. Days reach 24 °C, the sea climbs towards 19 °C by the end of the month, the wind is light, and you share Sarakiniko with a handful of people. Rooms are cheap, cars are easy. Boat rentals and most tavernas open through the month; ask before you book. The first light meltemi days arrive in the last week.
Early summer: June
June is, for many locals, the best month. The air is 28 to 29 °C, the sea 22 to 23 °C, the days are the longest of the year and the meltemi, though present, is moderate and mostly an afternoon affair. Everything is open, nothing is full. Kleftiko in the morning is glassy more often than not. Prices are high-season from mid-month but rooms are still findable a few weeks out. The only drawback is that June has become known, and the last two weeks are noticeably busier than the first.
High summer: July and August
The hottest, windiest and busiest months. Air around 30 °C, sea at its peak of 24 to 25 °C, zero rain, 12 hours of sun. Milos sells out: rooms, cars, boats, restaurant tables in Pollonia. August 15 is the busiest week of the year.
The meltemi is the defining feature. It blows most days, hardest from mid-July to late August, building from late morning to a peak in the afternoon and easing at night. On strong days it roughs up the north coast beaches (Sarakiniko, Pollonia, Papafragas) and the exposed west, while the south coast (Agia Kiriaki, Provatas, Firiplaka, Paleochori) stays swimmable. It also dries the heat, which is why 30 °C on Milos feels better than 30 °C in Athens.
July and August work if you plan around it: beaches and boats in the morning, villages and shade in the afternoon, a south-coast base, and everything booked in advance. Our guide to where to stay in Milos covers which areas stay calm.
Late summer: September
September is June with warmer water and fewer people. The sea is 24 °C, the air 27 °C, the meltemi fades through the month, and from the second week onward the island exhales. Rooms reappear, the beaches empty out, and the light turns golden. For boat days it is the best month of the year: warm water, calm mornings that stay calm into the afternoon, and Kleftiko with half the boats of August. Everything stays open until the end of the month.
Autumn: October and November
Early October is still summer by most standards: 23 to 24 °C, sea 22 °C, calm seas and the clearest water of the year for snorkeling. The first autumn rain usually comes mid-month, tavernas and boat operators start closing from around the 15th, and ferry schedules thin. Late October is quiet and lovely if you are self-sufficient. November is off-season: mild, showery, most things shut, the island to yourself.
Winter: December to March
Mild, wet and windy by Aegean standards, 13 to 15 °C by day. Milos is a working island (mining, fishing, a year-round population of about 5,000) so Adamas and Plaka never fully close, but tourism does. Ferries from Piraeus run year-round, reduced. Come for walking, the catacombs without queues and empty Sarakiniko; not for swimming or boats.
The meltemi explained
The meltemi is the dry north to north-east wind that blows across the Aegean in summer, created by the pressure difference between the high over the Balkans and the low over Turkey. On Milos:
- Season: late May to late September, strongest mid-July to late August.
- Daily pattern: calm at dawn, building from late morning, peaking mid-afternoon (often force 5 to 6, sometimes 7 on a strong day), easing after sunset.
- Duration: it blows in episodes of two to five days, with calmer days between. A strong episode can last a week in August.
- What it means for beaches: the north coast takes the wind and the waves, the south coast is sheltered. On a meltemi day go south: Agia Kiriaki, Provatas, Firiplaka, Tsigrado, Paleochori.
- What it means for boats: mornings are for distance (Kleftiko, Sykia), afternoons for the sheltered coves. Our base at Agia Kiriaki is on the sheltered side, which is why the south coast routes run on most days even in August. We check the forecast every morning and tell you plainly which routes are on; see half-day vs full-day boat trips.
- What it means for ferries: high-speed boats occasionally cancel on force 7 or 8 days; the big conventional ferries almost never do.
Best time for boat days and Kleftiko
For a self-drive boat or a skippered day to Kleftiko, the ranking is clear:
- September: warmest calm water, fading wind, fewer boats. The best month.
- June: long days, moderate wind, everything open.
- Early October: calm and clear, slightly cooler water, quiet.
- Late May: calm but the sea is still cool (18 to 19 °C) and some operators are just opening.
- July and August: superb mornings, windy afternoons. Book the morning slot, leave early, expect some days to switch to the south coast coves.
From our platform at Agia Kiriaki, Kleftiko is 20 to 30 minutes by fast boat, which is why it fits a calm morning even in high season; see the complete Kleftiko guide. On days when it is off, the south coast coves and, with a Pollonia pick-up, the Kimolos channel are the alternatives; see the Kimolos island guide.
Crowds, prices and what is open
| Compare | May | June | July to August | September | October |
|---|---|---|---|---|---|
| Crowds | Low | Medium, rising | Full | Medium, falling | Low |
| Room prices | Low | High from mid-month | Peak | High, falling | Low |
| Tavernas and beach bars | Opening through the month | All open | All open | All open | Closing from mid-month |
| Boat rentals | From mid or late May | Yes | Yes, book ahead | Yes | To mid-month |
| Ferries | Daily, fewer | Full schedule | Full schedule | Full schedule | Reduced from mid-month |
| Sea for swimming | Cool | Warm | Warmest | Warm | Still warm early |
Our boat prices are the same from May to October, 180 € for a half day in the no-licence Compass 150cc to 950 € for a full all-inclusive day on the skippered Compass 7s; see which boat to rent in Milos. What changes is availability.
Pick your month, then pick your morning
Whenever you come, the calmest hours are before noon. Contact us with your dates and we will tell you what the season usually brings and which boat and route fit it.
FAQs
What is the best time to visit Milos?
June and September, for warm sea (22 to 24 °C), settled weather, moderate wind and manageable crowds. Early October is a close third with the clearest water of the year. July and August are hotter, windier and fully booked but still excellent with morning beach and boat plans.
Is Milos too windy?
In July and August the meltemi blows most afternoons, sometimes hard. It is not a reason to avoid the island, but it is a reason to stay on or visit the south coast on windy days, do beaches and boats in the morning, and book accommodation that is sheltered. June, September and October are much calmer.
Is Milos as windy as Mykonos?
No. Both get the meltemi, but Mykonos sits in the windiest part of the Cyclades and is famous for it. Milos is further south and west, and its long south coast is sheltered, so there is almost always a calm beach somewhere on the island.
Does it rain in Milos, Greece?
Almost never from June to September, and only a day or two in May and October. Most of the year’s rain falls between November and February.
Is it too cold to swim in the Greek islands in October?
Not in early October on Milos: the sea is still around 22 °C, warmer than in May. By the end of the month it drops towards 20 °C, still fine for a swim on a sunny day.
Is it too hot to visit Greece in June?
Milos in June averages 28 to 29 °C with a sea breeze, which most people find ideal. The real heat comes in late July and August, and even then the meltemi keeps the island more comfortable than the mainland.
How many days is enough for Milos?
Three full days minimum, five ideally, with at least one boat day; see our 3, 5 and 7-day itinerary. In high season add a buffer day for wind.
Sources
- Climates to Travel, Milos climate and monthly averages: https://www.climatestotravel.com/climate/greece/milos
- Hellenic National Meteorological Service: https://www.emy.gr/
- Greeka, When to visit Milos: https://www.greeka.com/cyclades/milos/
Ready to explore Milos by boat?
Rent the no-licence Compass 150cc or book a skippered boat, and discover Kleftiko, Polyaigos and the beaches only the sea can reach.
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[…] August sell out for both cruises and rentals; June and September have space and calmer seas. Our best time to visit Milos guide covers the months in […]