Sailing Conditions

The Adriatic is a long, narrow arm of the Mediterranean. On the Croatian side, chains of islands run parallel to the mainland and break up the sea into channels and bays, so there is usually a sheltered side to head for. Tides are small, which keeps mooring simple, and the water is very clear. The flip side of a mountainous coast is that wind can funnel through gaps between islands and down valleys, making it stronger in some spots than the general forecast suggests.

Three winds shape sailing in Croatia:

• Maestral. A north-westerly sea breeze that typically builds from late morning, peaks in the afternoon and fades towards evening. It is the defining wind of summer sailing and usually brings clear skies.
• Bura. A cold, dry north-easterly that pours down from the coastal mountains in strong, sudden gusts. It is most frequent in winter, can blow in summer for shorter spells, and is usually strongest in the north, below the Velebit range.
• Jugo. A warm, humid south-easterly that builds over a day or more, raising long swell and often bringing cloud and rain. It is more common in spring and autumn.

There are local winds too, such as the burin, a light offshore breeze at night. Croatian winds: bura, jugo and maestral explains how each behaves and how sailors respond. Skippers check official marine forecasts from the Croatian Meteorological and Hydrological Service, broadcasts on VHF radio and their own experience. A seasonal pattern is never a forecast.

Safety always comes before the planned itinerary. If a strong wind is forecast, the skipper may leave earlier, take a shorter hop, choose a better-sheltered harbour or stay put for a day. Occasionally a stop has to be dropped altogether. These decisions rest with the skipper and are part of how sailing works everywhere. Weather and route changes explains how and why plans change, and what that means for you as a guest.

The sea warms through the summer and stays warm into autumn. It is usually warmest in August and early September, when most people find it comfortable for long swims, while May and October are noticeably cooler. Temperatures also vary by area and depth, and a strong bura can cool the surface for a few days. Sea temperature by month gives approximate typical ranges through the season.

A yacht can spend the night in four main ways:

• Marinas offer berths with water, electricity, showers and security, at the highest price.
• Town quays put you in the centre of a harbour town, sometimes with water and power, and are managed by local port authorities or concessionaires.
• Mooring buoys are laid in many bays, often run by a local concession that collects a fee in the evening.
• Anchoring is free in many places, but restricted in some protected areas and harbours.

In marinas and on quays, yachts usually moor stern-to using fixed lines laid on the seabed, and guests are often asked to help with fenders or a line. Marinas and town quays and anchoring and mooring buoys explain each option. Anchoring with care also protects seagrass meadows, as described in protecting seagrass when anchoring.

Several of the most attractive sailing areas are protected. National parks such as Kornati, Mljet, Krka and Brijuni, and nature parks such as Telašćica and the Lastovo archipelago, charge entry fees for yachts and have rules on anchoring, fishing and speed. Fees change from year to year and are often cheaper when bought in advance. National and nature park fees explains how they work and where to check current prices.

This guide explains general conditions and is not navigation advice. On board, the skipper's briefing and decisions come first: wear a lifejacket when asked, hold on when moving around the deck, and tell the skipper before swimming. The safety guides cover swimming from a yacht, sun and heat, and alcohol on board. In an emergency on land or at sea, the European emergency number 112 works throughout Croatia.