I’m off to Dubrovnik end of May and the weather has looked excellent up to maybe about a week ago.
Has it really been that bad there or is it just bad weather updates as normal ?
I am not currently there but this site is usually quite accurate (see below) Currently its showing 13th.14th & 15th as sunny with some clouds and a small amount of rain. In my experience that means isolated showers rather than a solid downpour for days. You still have a couple weeks to go so alot can change. I would keep an eye on this site and use the weather symbols description for more detail. You never know though so pack assuming there will be some showers. Fingers crossed for you...enjoy your trip!