After stronger wind around northeast Sardinia, travelers with a boat trip planned from Olbia are asking the practical question: will conditions improve tomorrow? Current forecasts for Thursday, September 24, 2026 point toward substantially lighter wind around Olbia, with generally small waves close to the coast. That is encouraging for boating, but it is not a blanket guarantee that every excursion will operate: the skipper or charter company must make the final decision using the latest local marine forecast and the planned route.
The latest ARPAS forecast for Olbia shows west-southwesterly wind around 3.2 m/s at 08:00 on Thursday, weakening to about 2.4 m/s from the west at 14:00 and around 3.1 m/s in the evening. In nautical terms, those values are roughly in the 5–6 knot range. ARPAS currently shows no accumulated precipitation for Olbia in its six-hour forecast periods on Thursday.
What the marine forecasts say for Thursday
Marine-specific forecasts also suggest a calmer day. The current forecast for the Olbia–Costa Smeralda coast indicates weak winds of roughly 4 knots through much of the day, with local maximum values around 8–11 knots. Wave height is forecast to decrease from around half a meter in the morning toward approximately 0.2–0.3 meters later in the day, with the sea described as becoming only slightly rough.
A separate forecast for Cala dei Sardi, north of Olbia and close to the Gulf of Cugnana, gives a similar picture. It expects generally weak winds, around 3–9 knots during the morning and 3–7 knots during the afternoon, with waves around 0.3–0.5 meters early and near 0.3 meters later.
Port-level forecasts around Olbia also show light conditions. Forecast data for the Circolo Nautico Olbia area describe morning wind mostly around 2–6 knots, while Porto Rotondo is expected to see light westerly to northerly wind and waves around 0.3–0.5 meters during the morning.
So will boat tours leave Olbia tomorrow?
The forecast is favorable enough that travelers should not assume tomorrow's excursions will be cancelled simply because today has been windy. Current models show a meaningful reduction in wind and sea state around Olbia for Thursday.
However, whether a specific boat leaves depends on much more than the forecast at Olbia harbor. An excursion toward Tavolara, Molara, Capo Ceraso, Porto Rotondo or farther north can encounter conditions that differ from those inside a sheltered marina. Wind direction, swell, vessel size, passenger comfort and the skipper's planned itinerary all matter.
For that reason, passengers should contact their operator rather than deciding independently that the trip is safe or unsafe. Professional skippers can modify a route, delay departure, choose more sheltered anchorages or cancel when conditions are unsuitable.
One weather detail to watch: afternoon instability
General weather forecasts are not completely uniform about Thursday afternoon. The current forecast for Olbia calls for a warm day near 30°C, but some services indicate the possibility of afternoon showers or increased cloudiness. A broader yellow thunderstorm warning is also in effect for parts of Sardinia during portions of Thursday, although the warning does not mean thunderstorms will necessarily occur over the Olbia boating area.
This is a good example of why a marine decision should be made close to departure time. Wind and wave forecasts may look comfortable while convective weather introduces a separate risk. A skipper will normally check updated radar, warnings and local conditions before leaving.
Morning may be the easiest window to assess
For travelers who have flexibility, a morning departure is worth discussing with the operator. Current forecasts show light winds early in the day, and morning conditions can be easier to evaluate before any afternoon instability develops.
That does not mean the afternoon is automatically unsafe. Forecasts currently show weak wind throughout the day around Olbia. It simply means that travelers should keep an eye on updates if showers or thunderstorms begin developing over northeast Sardinia.
What to check before going to the marina
Ask the charter company for confirmation on the evening before departure and again in the morning if conditions have been unsettled. Confirm whether the planned itinerary remains unchanged and whether the operator expects any adjustment because of wind or swell.
Do not rely solely on a general weather app showing a sun icon over Olbia. For a boat trip, wind direction, gusts, wave height and sea state are more useful than air temperature alone. Conditions at the destination also matter: a calm harbor does not necessarily mean an exposed crossing will feel the same.
Based on the forecasts available on September 23, Thursday September 24 currently looks considerably more favorable for boating around Olbia than a strong-wind day. The signals from several marine forecasts broadly agree on weak winds and relatively low waves. For passengers, that is encouraging news—but the final go/no-go decision belongs to the skipper using the freshest marine information on the day.
