Frequently asked questions
Answers to the questions we get asked most often. Can't find what you're looking for? Write to us: info@marecalmo.app.
How reliable are the forecasts?
The forecasts are produced by professional marine weather models and give an excellent indication of the trend. They should, however, be read as a forecast, not as a precise metre-by-metre measurement. The closer you get to the day, the more accurate they become. For your safety, always check the actual conditions on site and the instructions of the Harbour Master's Office.
How often is the data updated?
The data is recalculated automatically 5 times a day, every 3 hours during daytime (at 6, 9, 12, 15 and 18). You can find the time of the last update in the "Today" summary (and at the top of the app on wide screens).
What area does MareCalmo cover?
All 15 of Italy's coastal regions, from Friuli-Venezia Giulia to Liguria, Sicily and Sardinia included, across every sea (Adriatic, Ionian, Tyrrhenian, Ligurian Sea, Sardinian Sea and Strait of Sicily). For every coast you'll find hundreds of beaches, swimmable rocky shores and lidos; we also include points of interest such as dive schools, rentals and charters, which you can show or hide from the filters.
What do the colours and scores mean?
Each location has a daily score that summarises sea, water, sun, air and wind for the chosen activity: the higher it is, the more suitable the day. For details on the 6 sea states, wind and wave types, read the Guide.
Do I need to create an account?
No. MareCalmo is free and requires no registration. Your preferences (activity, filters, distance) are saved only in your browser.
Can I install it on my phone?
Yes. MareCalmo is a Progressive Web App: from the browser menu you can choose "Add to Home Screen" and use it like an app, with quick startup and operation even with a weak signal thanks to offline caching.
How is the service funded?
MareCalmo is and remains free, for businesses too: the Business area listing costs nothing. The service is funded through advertising (Google AdSense display ads), through affiliations (for example experiences and tours bookable via GetYourGuide) and through the paid sponsorships of businesses. For details on cookies and data, see the Cookie Policy and the Privacy Policy.
Where does the data come from?
From the forecasts of Open-Meteo (CC BY 4.0) and the cartography of OpenStreetMap. More details in About us.