Montenegro’s coast on this site is the Bay of Kotor and the open shore outside it. The bay is a deep inlet under steep mountains, calm-looking and gusty. The coast outside is the Adriatic proper, with the fetch of the southern sea. Confusing the two is the mistake the guides try to prevent. Today’s weather is the live board. The official forecast is the Montenegrin hydrometeorological service. This page does not invent a web address for it.
Read Boka Kotorska for the weather: mountain gusts in the inner bays, Jugo and rain toward the entrance, the afternoon breeze that follows the shape of the bay, the Verige strait, and the open sea outside. Then read Kotor or Tivat if you are choosing a berth. That page is not a second weather tour. It is about which end of the same bay you start from. Kotor is the inner end. Tivat is nearer the exit. Both still use the Boka guide for the wind.
They do not change their names at the border.
The forecast guide and the go/no-go guide are the numbers and the habits. The season guide is the year, with no statistics attached.
Dubrovnik and Cavtat are close to the border and they are in Croatia. The Dubrovnik guide and the Mljet guide cover that water, including the note that entering Montenegro by private boat has its own formalities. Check the official rules before you plan a trip across. This site does not summarise them, because they are not ours to invent. DHMZ warnings apply on the Croatian side. They are not a Montenegrin warning.
You can set Kotor, Tivat or Herceg Novi on the board. The verdict uses the forecast for your boat, gusts and waves included. It does not read a Montenegrin warning feed the way it reads DHMZ in Croatia. That is why the official local forecast still matters when the page looks calm. Who runs the app, and which services it calls, is the about page. The other hubs are Croatia and Slovenia.
Most small-boat days here should be planned as bay days. The open coast is available, and it is a different sea. If you are unsure which of those you are starting, you are not ready to leave the entrance. The two Montenegro guides exist so that this choice is made in harbour, well before you cast off.
Check today’s go/no-go for your boat
These guides describe typical patterns, not today’s weather. Navigate Boats is a planning aid, not a navigation tool: before you go, check the official marine forecast and warnings from DHMZ (Croatia), ARSO (Slovenia) or the Montenegrin hydrometeorological service, and use your own judgement.
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