Ask what a Mediterranean charter costs and the honest answer is: it depends less on the yacht than on the week you book it. A reference forty-five-metre motor superyacht lists from roughly €120,000 for a standard French Riviera summer week — and up to €400,000 for the same hull during the Monaco Grand Prix. That is a threefold swing on identical hardware, entirely a function of the calendar. The Riviera is the world's most expensive charter coast, but its price is a date, not a sticker.
Two weeks in May do most of the damage. The Cannes Film Festival and the Monaco Grand Prix sit back-to-back, are booked nine to twelve months ahead, and pull the coast into the second-most-expensive stretch of the entire Mediterranean year — behind only Ferragosto, the mid-August peak. For those weeks the Riviera trades on scarcity of berth and spectacle rather than cruising: Port Hercule fills months out, and a peak berth for a forty-metre-plus yacht runs €4,000 to €9,000 a night before the charter fee is even counted.
The number on the brochure is never the number you pay. A French charter week carries roughly sixty-five percent on top of the base rate — twenty percent VAT, an advance provisioning allowance of around thirty-five percent for fuel, food and berths, and a customary ten percent crew gratuity. On a €250,000 Riviera week that is about €165,000 in additions; the all-in lands near €410,000. Budget the base rate and you have budgeted two-thirds of the trip.
The Riviera earns its premium in infrastructure, not water. No other Mediterranean coast carries this density of superyacht-capable berths — Port Vauban in Antibes holds the deepest single-superyacht slot in the sea, Port Hercule takes hulls to 110 metres — and Cannes, Antibes, Monaco and Saint-Tropez are the four most-used embarkation points for charters heading east to Corsica, Sardinia and the Amalfi Coast. You are paying for the changeover ground of the whole Western Mediterranean.
For those willing to leave it, the value is elsewhere. The Balearics — Ibiza, Mallorca, Formentera — price roughly twenty-five percent below the Riviera for cruising many brokers rate more highly: clearer water, emptier anchorages, and Spanish waters that sidestep the French VAT structure. Greece and the Cyclades run cheaper still. The trade is simple: the Riviera for the social calendar and the marina density, the islands for the swimming and the price.
Methodology. Figures are indicative peak-season (August) weekly base rates for a reference forty-five-metre motor yacht, compiled by MonacoTop from 2026 central-agent broker rate sheets (calibrated against roughly 220 yachts as of May 2026); a specific yacht runs twenty to thirty percent above or below its band on builder, refit and demand. The all-in multiplier reflects standard French-water additions (VAT, APA, gratuity). Event-week and berth figures are 2026 market quotes. This is a planning benchmark, not a quotation — for a specific yacht and week, the only number that matters is the one a broker confirms.