If you want a wetsuit or semi dry, it's a sad fact of life that they are a struggle to put on, especially when damp.
My solution is 3 layers... a 3mm neoprene swim suit (Awoon)
a 5-4-3 full surfing suit which gives lots of freedom and pretty easy to get on and a Ralf Teck shorty over the top. This gives me 10mm of neoprene on my body. And I wear a hood some of the time even in 25 degrees + water.
Mind you, as most will tell you, I don't coordinate and usually look a mess in full gear.
Anything less than 23 degrees, I'd use my membrane DS or end up shivering after 15 mins.
Where are you going? A lot of places, boat crew are more than happy to help nice young ladies get into their kit.
