UGrib v Poseidon System

[Brettsan]

Which one's the most accurate for the Cyclades ?

[Franziska]

They are different ;-)

In 2004 I found Poseidon a very good tool. But, it is a website, which means you need full web access to view it.
Being local from the Greek, I'd think it is very accurate. As far as I recall it also gives wave data, which is helpful when cruising with a smaller boat.

UGrib in turn is a program you install on a PC and use it to watch GRIB Data you downloaded in form of very small files from the web.

I tested several GRIB file viewers, my preferred free one is:

zyGrib

Grib files come from several locations, a good one is:

FREE GRIB Files | Marine Weather Charts | Global Marine Networks

Where you can send a very short coded email to and receive the required GRIB automatically back.
Remember, you do not need to buy a program to use these files. Zygrib handels them well.
If I where you, I'd use Poseidon if I am in an Internet cafe or have full web access, or if I require more info than from the GRIB.
When on board I'd use Zygrib.

Happy cruising,

Franzi

[GordMay]

Greetings and welcome aboard the CF, Brettsan.

[Jacques2]

Hi !
I agree with Franziska for the essential... But, with a preference for Poseidon that is, to my opinion, more precise concerning the local phenomenas, for example, the straits between 2 islands or the effect of the altitude of the islands on the wind on the opposite side....
In fact, if you have a 3 G USB connection (Vodaphone or Wind : prepaid system) you will have internet connections quite everywhere in the Aegean and so Poseidon or Passagewhether or the official Greek meteo ...