Hi,
This is probably a stupid question, but i ask anyway...
I noticed euro is now weakest i have seen so far against CHF, so i was thinking about transferring money to my euro account in my home country. I can do it online for 0.30 CHF. Of course, noone knows if it will go even weaker and what the situation is next year, when i might go back to my home country. Do you have any opinion for this, is it useless to try to optimise it this way?

On Tuesday, UBS predicted that EUR/CHF will fall to 1.30 this summer.

MariVI'm also planning to do the same what you said. My understanding:
There are 2 trends at the moment:
1. The Frank is getting stronger after the National Bank stopped its interventions and nervous investors around the world change their cash to Frank as an "escape".
2. The Euro is getting weaker due to government debt fears across EU.

These two trends are partially independent and make the Frank stronger against all other currencies and make the Euro weaker agains all other currencies. Both of these push the CHF/EUR rate to the same direction.
The easy answer is that the best time to exchange your money is when these trends are close to end. If you want to catch the best exchange rate I suggest to wait and keep an eye on the news. Once you start hearing good news about financial markets around the world, probably that will be the best time to transfer your money to Euro.

I recommend to do it in multiple steps and not in one go to to avoid risk. Once you are in Euro and the Euro continues to weaken that's not gonna be good for your personal wealth.

P.S. This is all speculation and my private opinion. Follow only if you agree.