I brought Kali to the beach last summer when she was only 4 months - and she loved it - she had the best time digging in the sand. I had lots of water there for her and a "beach umbrella" she could stay under. She would not go into the water though, the sea is scary - it moves
In Denmark we can't get rabies vaccine until they are 1 year old but I wasn't afraid since I look very intimidating to any creature who gets near my dog and luckily it's not allowed to have dogs at the beach without a leash
Looking forward to hearing your experiences on the beach
Mette