weather and sea state forecast in South of France ?

BartW

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www.amptec.be
within a few weeks we have a one week diving holliday in SOF Cassis, where on the internet do you guy's down there look for a weather and seastate forecast in that area ?
 
in cassis you are in a nice town in its own bay well protected from the heaviest northwesterlies (mistral) and all along that area there are plenty of similar pretty bays and calanques, so normal seastate predictions probably don't apply. So i think i wd trust to local knowledge of dive boat who will adjust dive area daily to suit conditions.
 
In the Med, there is one infallible weather forecasting system. If the local boats are going out, then it's going to be OK. If not, then something's up. The Med has lots of little microclimates depending where you are. It can be blowing a hooley in one area and be dead calm 30 miles up the coast. The major weather event you should look out for in the Cassis area and along that coast (known as the calanque coast, calanques being the steep inlets along this coast) is the mistral wind which can blow from the W/NW at short notice and last for several days, causing moderate to rough sea conditions. The mistral generally blows less hard the further east you go
 
Hey mike, thanks for your advice !
looking around what other boats do is a general rule I've alway's been using, and it has been usefull on many occasions, sea state forecast, max speed, shallow water, .....
 
Some notes on winds in the Western Med :

There is a general system of winds that blow from the coast towards the centre of the sea. These winds have various names, depending on location : Scirroco, Ghibli, Khamsin, Meltemi, Etesian, Bora, and Mistral all blow from the land towards the sea.

There are other wind patterns in various parts of the Mediterranean.

The main winds in the Languedoc region are the Mistral and the Tramontane. Both blow from a north to north westerly direction towards the coast. The Mistral is a dry wind, strongest in the Rhone valley, bringing blue skies. It can arrive very rapidly, achieving force 7 - 8 within 1 hour. It normally lasts for a few days.

The Marin, a strong southerly wind, bringing rain and clouds also lasts for a few days.

The considerable temperature differential between land and sea produces very pronounced sea breezes. Blowing offshore at night and onshore by day, they can be strong near the coast.

The interaction of the various winds can make sailing frustrating. It is not uncommon to have a northerly wind in the morning, variable winds at mid day followed by a strong southerly in the afternoon.


There are some inshore and coastal weather links here : www.the-languedoc-page.com/tourism/languedoc-sailing-meteo.htm

Peter
 
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