My climate also is maritime (north coast of Spain), very rainy and cloudy, and there are a lot of big fig trees, like in French Atlantic coast.
The fig trees grow happily here, they have mild temperatures and a lot of water available, they are healthy and leafy. The downside is that late varieties like Coll de Dama, Bourjassote, ... don't ripen well. The figs (the fruit) are not as happy as the trees...