I used to be nervous of wet feet but I've found it to be far less problematic than I expected! Remember we are inclined to 'pack our fears', but the most important thing is to keep the weight of your pack down. It's very personal and if at all possible practice with your kit at home. My first Camino I had lightweight Goretex trail runners, very comfy but by lunchtime rather hot. So I would air my feet and changed my socks about 2/3 of the way for that day and I did okay. Then Altra brought out women's wide Lone Peak's (regular are too narrow for me) and I tried a pair. On a 20km walk my feet got very wet indeed but it wasn't uncomfortable. Once the rain stopped I did change into dry socks for the last section of the walk. They became a little damp from the shoes but not soaked. Lone Peak are designed to drain and the material breathes really well. No blisters, so I felt confident I would be happy with them on Camino. The one day (in 34) I had when it rained hard all day I didn't bother to change socks and it's not the most pleasant thing to have damp feet but I wasn't sloshing about because my shoes drained so well. I truly don't believe you should worry about wet feet in June. Comfy footwear that suits you and a pack that's not too heavy, you'll be fine.