Milos weather in May

May in Milos: nice, dry, with muggy air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Milos🇬🇷 Greece · Greece & Cyprus · Island83
  1. 58Jan
  2. 66Feb
  3. 73Mar
  4. 79Apr
  5. 83May
  6. 90Jun
  7. 93Jul
  8. 92Aug
  9. 91Sep
  10. 86Oct
  11. 74Nov
  12. 62Dec

#6 of 12 months in Milos · #606 of 1413 destinations to visit in May · comfort 83/100 (tier A)

Days
20°C
Nights
17°C
Wet days
2
Sun
12.5 h
Humidity
75%
Daylight
14 h
Milos, Greece
Photo: Luke Webb · Pexels

Traveller notes on Milos in May

Regulars are honest that weather patterns here have shifted in recent years, late May traditionally bringing reliable sunshine and warmth but now just as likely to bring a cloudy, windy stretch with real rain or even thunderstorms. Our row backs that mild, genuinely dry read, 20.1C over 16.8C nights, with rain light at 7.8mm across 1.7 days and a real 28.5 kph wind. Regulars are consistent mixed weather across the wider Cyclades isn't unusual this month, conditions typically settling into something more reliable by the very last week. The sea itself stays genuinely cold regardless of how warm the air gets, not yet a comfortable swim for most visitors. The sea sits at 18.4C. The record: 12.5 hours of sun, humidity 75 percent and AQI 51.
PatternsShiftedLateMayNowLessReliable · May · 1 month ago · Read more on Tripadvisor ↗

Other months in Milos

Regulars are specific about the timing of this region's defining wind: the meltemi is the real problem from July through September, easing off notably by this point, with any remaining wind a lesser concern than winter weather that starts to matter from here on. Our row still shows a real breeze, 31.9 kph, alongside mild, still-pleasant temperatures, 21.1C over 18.5C nights, and 21.3mm of rain across 2.5 days. Regulars describe mid-to-late October as still great for the beach, short sleeves and swimming weather, with the sea holding its summer warmth well into the month at 23.4C. The record: humidity 72 percent, 9.9 hours of sun and AQI 48.
MeltemiHasAlreadyCalmedDownByNow · October · 1 month ago · Read more on Tripadvisor ↗
June here is settled enough that the only real planning question is the wind, and regulars answer it with a map rather than a forecast. Sarakiniko is in the north and catches it, so on a breezy day the sea there is rough and the south coast is the answer - Firiplaka, Provatas and Paliochori are the names they give as sheltered. The habit is to decide each morning and drive across if needed. Our row explains why it comes up at all: a 26.1 kph average in a month with 3.7mm of rain across 0.9 days and 13.2 hours of sun. Air and sea sit almost level at 24.3C and 22.5C, with nights barely cooler at 21C. The record: humidity 74 percent and AQI 59.
PickTheBeachByTheWind · June · 1 month ago · Read more on Tripadvisor ↗
Late September is the month regulars push for Milos: crowds gone, room rates down, weather usually still good into mid-October, and the tavernas in Adamas and Pollonia still open even as other things start shutting. Our row gives 24.5C over a very mild 21.7C night with 8.4mm across 1.6 precipitation days. The one piece of planning advice they repeat is about wind, which our row puts at 31.1 kph: September can blow hard enough to cancel sailings, so do the boat trip in the first days of your stay rather than the last, and check the forecast the night before. Tickets can be bought the day before without trouble. They are also honest that the odd year turns rotten for five or six days. The record: humidity 71 percent, 11.2 hours of sun and a 24.5C sea.
DoTheBoatTripEarly · September · 1 month ago · Read more on Tripadvisor ↗
The meltemi blows from the north across the Cyclades from about June to September and peaks in August, and on Milos that is a geography problem with a geography answer. Pollonia, on the north coast, takes the full force of it; Adamas faces south and is sheltered; and on a windy day the south-coast beaches - Palaiochori, Agia Kyriaki, Provatas - are the ones still worth going to. Sarakiniko is the island's picture and is frequently windy with rough water when the meltemi is up. The compensation regulars point out is that even in August Milos is not crowded the way Santorini is. The record: 26.5C days, 23.8C nights that barely cool, 0.4 precipitation days, 12.6 hours of sun, a 26.5C sea and a 30 kph wind.
SouthSideOnAWindyDay · August · 1 month ago · Read more on Tripadvisor ↗

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Milos climate normals — May

Daytime high20°C / 68°F😎 nice
Nighttime low17°C / 62°F
Feels like (high)21°C / 70°F
Sea temperature18°C / 65°F🧊 bracing
Rainfall8 mm / 0.3 in☀️ dry
Rainy days2 days
Humidity75%💦 very humid
Dew point14°C / 57°F
Sunshine12.5 h/day
Daylight14.1 h
Wind29 km/h / 18 mph
Air quality (US AQI)51🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Milos in May

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Milos's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherMilos's weather peaks July–September.

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Best weatherFair weatherToughest weather

What's on in Milos in May

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Opening

    Boats and rooms open

    15 Apr – 20 May · usuallySummer season opens

    The Kleftiko boat trips, the hire-car offices and most tavernas start up between Easter and mid-May, and the Piraeus ferry timetable thickens with them. Source ↗

What's on around the world in May →

Nearby, and something's on

Within 300 km of Milos — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Milos?

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Milos in May — FAQ

Is May a good time to visit Milos?
May in Milos: nice, dry, with muggy air — an excellent time to visit. It ranks #6 of 12 months for Milos on SeasonMap's comfort score (83/100).
What is the weather like in Milos in May?
In May, Milos averages a daily high of 20.1°C and a low of 16.8°C, with about 7.8 mm of rain over roughly 1.7 rainy days.
What is the air quality in Milos in May?
Milos has a mean US Air Quality Index of about 51 in May.

Within 300 km: Paros' Rooms and ferries open up around 15 Apr – 25 May, and Naxos' Rooms and ferries open up around 15 Apr – 25 May.