On Samos, the same afternoon can bring a glassy sea on one side of the island and whitecaps on the other. The reason is usually the meltemi, the strong summer wind of the Aegean. Learning how it behaves is the simplest way to turn a windy forecast into a good beach day instead of a wasted drive.
This guide looks at the island’s shores through one practical question: where will the water be calm today? It draws on published guidance from meteorologists, the Discover Greece travel portal and sea-safety organisations.
What the meltemi is and when it blows
The meltemi, also called the Etesian wind, is a strong, dry northerly wind that dominates the Aegean in summer. According to SKYbrary, the aviation safety knowledge base, it blows from mid-May to mid-September and peaks in July and August. Its direction shifts across the sea: it comes from the north-east in the northern Aegean, from due north in the central Aegean and from the north-west in the southern Aegean.
Speeds of 11-21 knots are common in the early afternoon, and the wind can surge to 17-33 knots or more. A 2023 study in the journal Atmósfera reports that the observed wind speed over the Aegean peaks around noon and drops to its minimum around midnight. In practice, mornings are usually the calmest part of a meltemi day.
How to read a wind forecast before you set off
Many forecasts give the wind on the Beaufort scale rather than in knots, so it helps to know what the numbers mean at sea. The Met Office describes the relevant forces like this:
- Force 3, gentle breeze: 7-10 knots, slight sea.
- Force 4, moderate breeze: 11-16 knots, slight to moderate sea.
- Force 5, fresh breeze: 17-21 knots, moderate sea.
- Force 6, strong breeze: 22-27 knots, rough sea.
- Force 7, near gale: 28-33 knots, rough to very rough sea.
A simple rule of thumb follows. At force 3 the sea is only slight, so most shores are pleasant. From force 5 upwards, a beach that faces straight into a northerly wind is likely to have waves, while a south-facing shore sits in the lee of the island. Always check the direction as well as the number: the meltemi is a northerly, but other weather systems can bring wind from the south, and then the picture reverses.
The north coast: beautiful, but exposed
Several of the island’s best-known beaches line the north coast around Kokkari and Karlovasi, facing the open Aegean. Discover Greece notes that Kokkari beach “can get windy, making it popular with windsurfers”, advises visitors to nearby Tsamadou to “watch out for northerly winds” and warns that Potami, close to Karlovasi, “can get windy” as well.
That does not mean you should skip them in July and August. Because the meltemi is weakest at night and builds towards midday, an early swim on the north coast is often calm even on a day with a strong forecast. If you plan to stay into the afternoon on a force 5 or 6 day, though, expect the sea to change and plan a second stop.
Sheltered shores for windy days
When the north coast is rough, head south or look for coves protected by the shape of the land. Discover Greece describes Votsalakia, in the large bay of Marathokampos in southern Samos, as “protected from the wind”, with sunbeds, beach bars and tavernas along the shore. It says the same of Mikri Lakka, a small cove with “calm blue waters” that you reach by boat or with a 10-minute walk from Mourtia beach. There are no facilities there, so bring water and something for shade.
Switching coasts at short notice is easier when you already know the roads. For driving routes, parking notes and airport distances for ten of the island’s most popular shores, this overview of Samos beaches and how to reach them by car is a useful companion to the wind forecast.
Matching the beach to the season
The calendar helps you plan as much as the daily forecast. In June and the first half of September you are inside the meltemi season but outside its July and August peak, so it is worth keeping both coasts on your list and deciding on the morning itself. In July and August, plan the exposed northern beaches for the morning and keep a south-facing bay in reserve for the afternoon.
Whatever the month, check the forecast the evening before and again before you leave. A beach that was perfect yesterday can look very different when the wind turns or strengthens overnight.
Staying safe when the wind is up
A windy beach is not only uncomfortable. New York Sea Grant, repeating NOAA’s advice, notes that rip currents can occur at beaches with breaking waves. If you are caught in one, do not fight it: swim parallel to the shore, then at an angle away from the current and back towards land. Swimming where lifeguards are on duty is the safest choice.
Sheltered south-facing beaches carry a different risk on meltemi days. There, a northerly wind blows from the land out to sea, and the RNLI warns that strong offshore winds can rapidly carry inflatables away from the beach. Its advice is to never use inflatables in big waves, to wear a buoyancy aid or lifejacket and to make sure children are supervised.
Putting it all together
Choosing among the best beaches in Samos is easier when you treat the wind as part of the plan. Check both the direction and the force, use the calm mornings for the north coast and keep a sheltered southern bay for the windy afternoons of high summer. That way the island’s varied coastline works in your favour rather than against you.
Sources
- SKYbrary, Etesian Wind. https://skybrary.aero/articles/etesian-wind
- Atmósfera (N. G. Prezerakos), The planetary boundary layer physical processes, the secondary thermal baroclinic circulation and inertial oscillation contribution to diurnal variation of the Etesian winds over the Aegean Sea. https://www.revistascca.unam.mx/atm/index.php/atm/article/view/53039
- Met Office, Beaufort wind force scale. https://weather.metoffice.gov.uk/guides/coast-and-sea/beaufort-scale
- Discover Greece, 12 of the best beaches in Samos. https://www.discovergreece.com/travel-ideas/best-of/12-best-beaches-samos
- New York Sea Grant, Rip Currents Can Be a Threat. https://www.seagrant.sunysb.edu/articles/o/346
- RNLI, Blown Offshore in Seconds: RNLI Rescue Highlights Dangers of Inflatables. https://rnli.org/news-and-media/2026/april/29/blown-offshore-in-seconds-rnli-rescue-highlights-dangers-of-inflatables
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