The Mediterranean charter map: where availability is greatest in high season

That is why, when planning a summer trip, the most useful question is no longer simply which destination is prettier or cheaper. The key question is another: where is availability still to be found when demand is tight?

To answer it, we have prepared an editorial 2026 benchmark on the Mediterranean charter market, focused on three variables: the number of active bases, average visible availability in high season and the average booking window. The analysis is based on observable supply-and-demand patterns in major Mediterranean markets and should be read as an editorial estimate, not as an internal CRM extract.

The general conclusion is clear: Croatia and Greece are the markets with the most room for choice in the height of high season, while Spain — especially the Balearic Islands — has the greatest availability pressure. Italy is in an intermediate position, with very marked differences by area.

The overall Mediterranean picture in 2026

The benchmark compares four major markets: Spain, Croatia, Greece and Italy.

Croatia leads in supply structure, with 18 relevant bases and average availability of 39% for high-season departures checked 90 days in advance. Its average booking window stands at 141 days.

Greece is very close behind, with 16 active bases, average availability of 37% and an average booking window of 133 days.

Italy has 11 relevant bases, average availability of 28% and an average booking window of 117 days.

Spain, meanwhile, shows the greatest pressure in the analysis: 9 main bases, average availability of 24% and a booking window of 152 days. In other words, while Spain is no less attractive, it does require booking earlier and leaves less room for improvisation.

The reading is simple: markets with a broader network of bases and a more distributed fleet tend to withstand the pressure of July and August better. More concentrated and aspirational destinations lose availability much more quickly.

Where there are more bases, there is usually more breathing room

In yacht charter, the number of bases matters greatly. It is not just a matter of the map. It is a matter of supply density.

When a country has many active bases, pressure is spread more effectively. A traveller who cannot find availability in one marina can move their departure to another nearby base without changing country or type of trip. This works particularly well in Croatia and Greece.

When demand is concentrated in a few highly iconic places, availability falls earlier. This is what happens in the Balearic Islands or in some premium areas of Italy, where much of the attention is concentrated on a few much-desired islands or ports.

In practical terms, more bases mean more flexibility. Fewer bases, however attractive, usually mean more competition for the same weeks.

Croatia: the great refuge for summer availability

Croatia is the benchmark's strongest market when it comes to high-season availability. The reason is not only the destination's reputation. It is its structure.

With 18 relevant active bases and average availability of 39% 90 days before departure, Croatia offers more options for those who book late or need to adjust dates. Split, Trogir, Dubrovnik, Zadar, Šibenik, Biograd, Pula and Kaštela help distribute demand in a way that few Mediterranean markets can match.

The bases with the best availability performance in the Croatian market are Split/Trogir, at 43%, and Zadar/Biograd, at 41%. Croatia's average booking window stands at 141 days, indicating strong demand, but not as closed-off as Spain.

In addition, Croatia has a further advantage: its coast works very well for weekly routes. Many crossings between islands do not require great distances, which makes fleet rotation particularly efficient for groups and families.

That is why the Croatian market tends to retain more real options for longer. For those seeking boat hire with some room for choice in summer, Croatia remains one of the Mediterranean's most rational markets.

Greece: many bases, many routes and good elasticity

Greece performs almost as well as Croatia. The benchmark assigns it 16 active bases, average availability of 37% and a booking window of 133 days.

Greece's strength lies in its diversity. Lavrion and Athens concentrate a very important part of the market, but they are not the only gateways. Preveza, Corfu, Kos, Volos and other bases in the Ionian, Saronic and Aegean also carry weight.

The base with the best availability in the analysis is Lavrion/Athens, with average availability of 46% 90 days in advance. Preveza/Corfu also performs very well, at 38%.

This makes Greece a highly elastic destination. The traveller can seek iconic islands, but can also move towards less pressured routes without losing the Mediterranean value of the trip. That elasticity matters in summer, when many groups do not want to depend on just one base or one week.

The other advantage is that Greece accommodates different kinds of trip well: families, groups of friends, sailing boats, catamarans and skippered routes. This product diversity helps availability avoid collapsing as quickly as in more concentrated markets.

Italy: less homogeneous than it appears

Italy sits in an intermediate zone. Its average availability of 28% is considerably lower than Croatia's and Greece's, but it is not as pressured as Spain.

The Italian difference lies in dispersion. It is not a homogeneous market. Sardinia, Sicily, Liguria, Tuscany, the Amalfi Coast and the Gulf of Naples respond differently to high season.

In the benchmark, Sicily appears as the area with the best relative availability, with bases such as Palermo or Portorosa moving at around 35%. By contrast, Sardinia falls to an average of 27%, and the more premium routes of the mainland south usually face more availability pressure.

Italy's average booking window is 117 days, the shortest in the analysis, suggesting a less predictable and more fragmented market. It does not require booking as early as Spain, but neither does it retain as much room as Croatia or Greece.

Italy works well for travellers who accept some geographical flexibility. Those looking for “Italy” may find options. Those wanting a very specific base, a very specific week and a very specific boat face a much tougher market.

Spain: the most pressured market in high season

Spain is the market with the lowest relative availability in this benchmark. The explanation is not a lack of appeal, but precisely the opposite: it concentrates too much demand in too few places.

With 9 main bases, average availability of 24% and an average booking window of 152 days, Spain appears as the market where decisions have to be made earlier. The Balearic Islands, especially Palma de Mallorca and Ibiza, weigh heavily in this behaviour.

Palma de Mallorca shows average availability of 23% 90 days in advance. Ibiza falls even lower, to 18%. These are low figures compared with the rest of the Mediterranean analysed.

This does not mean there is no supply in Spain. There is, and it is broad. But the pressure is far greater. The aspirational pull of the Balearic Islands, domestic and international demand, and the destination's iconic value mean inventory closes earlier, especially for catamarans, skippered boats and the central weeks of August.

That is why, in Spain, a booking depends not only on the destination. It depends greatly on the time at which it is made.

The bases with the most summer availability

If the map is viewed by bases rather than countries, the benchmark ranking is as follows:

Lavrion/Athens leads the analysis with average availability of 46%.

Split/Trogir comes second at 43%.

Zadar/Biograd takes third place at 41%.

Preveza/Corfu reaches 38%.

Palermo/Portorosa stands at 35%.

Sardinia/Olbia and the surrounding area is around 27%.

Palma de Mallorca drops to 23%.

Ibiza/San Antonio remains at 18%.

The message is highly useful for travellers. If the priority is having more real options in high season, it is advisable to look at markets with many bases and distributed fleets. If the absolute priority is an iconic destination, it must be accepted that the room for choice will be far smaller.

The booking window: how early each market books

The other major variable is the booking window, in other words, how many days before embarking bookings are usually made.

Spain leads with 152 days. It is the market where people need to move earliest.

Croatia comes second with 141 days.

Greece stands at 133 days.

Italy closes the analysis with 117 days.

At base level, Ibiza is the most demanding, with an average window of 167 days. Palma de Mallorca follows with 161 days. Split/Trogir stands at 138 days. Lavrion/Athens at 126. Sicily falls to 109.

This means availability does not depend only on the number of boats. It also depends on travellers' pace of decision-making. In the Balearic Islands, the psychological pressure to book earlier is much greater. In Croatia and Greece, the market structure allows a little more breathing room.

Which boats disappear first

Not all fleets behave alike. High season punishes some types of boat more than others.

Catamarans show the lowest average availability in the analysis: 21% 90 days ahead in high season. Their average booking window is 158 days.

Sailing boats show more comfortable availability, at 34%, and an average window of 118 days.

Motorboats sit in an intermediate position: 26% availability and an average window of 102 days, although with considerable variation by destination and range.

There is a clear explanation. The catamaran is the favourite product for families and groups seeking comfort. As there are also fewer units available than sailing boats in many markets, inventory closes earlier. Sailing boats, by contrast, retain greater breadth and more room for late booking.

What this means for travellers

The high-season Mediterranean charter map leaves three very practical ideas.

First: not all countries are equally tight. Croatia and Greece offer more room for choice than Spain.

Second: within the same country, the base changes everything. Looking for availability in Ibiza is not the same as looking in Lavrion, nor in Palma as in Zadar.

Third: the time of booking matters as much as the destination. A traveller who books late can still find good options, but will have far more possibilities in markets with a broad network of bases and a distributed fleet.

In 2026, Mediterranean charter is defined not only by where people want to go. It is also defined by where they can still choose.

The real map of summer is not that of the islands; it is that of availability

In the traveller's imagination, the Mediterranean is organised by destinations: the Balearic Islands, Croatia, Greece, Italy. But when high season arrives, the real map is organised differently: by availability.

Where there are more bases, there is more breathing room. Where there is greater aspirational concentration, supply closes earlier. And where the star product is the catamaran, the decision window becomes even narrower.

That is why, for many families and groups, the best summer question is not “which island should we choose?”, but “from which base can we still choose well?”

There lies the difference between booking what you dream of and booking what is still left.