Wind forecast & weather Gardasee (Torbole)

Gardasee

Torbole · today

Light windØ6Gust 18 kn

measured now · 00:00

Ø5Gust 13 kn

Weather & wind by day

Per day the most likely wind level and its probability – plus weather, temperature, rain and the strongest wind at the best time of day. The coloured bar in each tile shows how the chances split across the levels.

Wind levels (mean wind or gust):
Calm below 6 kn · Light wind 6–10 kn mean wind · Windy from 11 kn mean wind or gust 20 kn · Big Day from 14 kn mean wind or gust 25 kn

Wetterdaten: Open-Meteo.com (CC BY 4.0), Modelle u.a. DWD ICON – modifiziert (MOS-Windvorhersage) durch addicted-sports. · Open-Meteo.com

Wind over time

Hourly – mean and gust wind coloured by strength (local scale), plus the forecast of the key drivers. Two days side by side at full width, otherwise stacked; on mobile each day as rows.

Wind forecast & history

Solid lines are the forecast: mean wind (red) and gusts (anthracite), each with its spread. Once available, the measured values are added in the same colours but dashed. Use the arrows (day/month/year) to page through the days and compare forecast against reality. In knots (kn).

↔ swipe to page through the chart

The drivers behind the forecast

The most important inputs of our model for this spot – the same window as the history above. This shows which weather situation is behind the forecast (and, when paging, behind past days).

Ora & Pelér driving force (pressure gradient)

The pressure gradient is the air pressure in the Po plain (Ghedi near Brescia) minus the air pressure in Bolzano. This difference in air pressure is the primary driving force behind the Ora and Pelér winds.

How the difference occurs:

During the day the Alpine valleys get warmer than the Po plain. Slopes facing the sun receive the sunlight at a steeper angle and therefore heat up more than the plain. In addition, the narrow valleys contain less air that has to be heated. As the air warms it rises, the air pressure drops and a pressure difference develops.

Nature tends to even out the difference. Air from the plain flows into the valleys. That is the wind we all want: the Ora, a south wind blowing across the lake from the south (positive value, light, top).

At night it is the other way round. The mountains cool down more than the plain, and the cold, heavy air flows from the north through the valleys and across the lake: the Pelér, a north wind (negative value, dark, bottom).

The bigger the difference, the stronger the wind. The Ora blows at the Lake Garda spots from about +2.9 hPa in more than half of the hours between noon and 7 pm (dashed line).

North foehn: pressure difference Innsbruck−Bolzano

Calculated and shown is the air pressure in Innsbruck minus the air pressure in Bolzano, i.e. north minus south of the main Alpine ridge. If the value is positive (light, top), pressure is higher in the north and the air pushes over the Alps from the north. From about +3 hPa north foehn breaks through in the northern valleys of South Tyrol, from about +6 hPa it reaches Bolzano. It rarely reaches Lake Garda, and then, as usual for foehn, it is very gusty. In our measurements at Torbole, from about +7 hPa there was wind of at least 11 knots from the north in 4% of the morning hours, below that in 1%.

Ora driver: sun in the mountains

The sun drives everything. Without sun there is no heating, so no pressure difference and no wind.

Shown is the forecast solar radiation in the Adige valley near Trento, north of the lake (area), and dashed the radiation that would be possible there under a clear sky. The smaller the gap, the fewer clouds. The sun in the mountains supplies the heat that creates the pressure difference for the Ora (see pressure gradient). If clouds build up there around midday, the drive is missing and the Ora weakens. In our measurements at Torbole there was almost never any Ora below about 50 % of the possible sunshine (dotted line).

Temperature gradient Adige valley−Lake Garda

Calculated and shown is the air temperature in the Adige valley near Trento minus the air temperature at Lake Garda. If it is warmer in the north (light, top), air rises there and air flows in from the lake: this helps the Ora in the afternoon. If it is colder in the north (dark, bottom), the cold, heavy air flows from the mountains to the lake: this helps the Pelér at night and in the morning. In our measurements at Torbole, the Ora blew in 45% of the afternoon hours when it was more than 2 degrees warmer in the north, and only in 4% while it was colder in the north than at the lake.

Upper wind 700 hPa

Calculated and shown is the wind at about 3 km altitude (700 hPa) above the lake: upwards the share from the north, downwards the share from the south, plus the direction (right axis).

The Ora comes from the heating of the valleys and needs calm conditions aloft. If a strong south wind blows up there, it hardly develops. In our measurements at Torbole there was almost never any Ora with more than about 10 kn South (dashed line).

A strong north wind aloft, on the other hand, pushes the Pelér. In our measurements at Torbole, from about 20 knots of north wind aloft the Pelér blew in 2% of the morning hours, otherwise in 1%.

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Statistical forecast, no warranty – not an official weather forecast and no substitute for severe-weather warnings. Water sports at your own risk; judge the conditions on site. Terms of use