Spring
May – mid-JuneThe island is quiet and the harbor is active with the start of lobster season. Black flies are present from late May through most of June — annoying rather than prohibitive, but worth knowing. The landscape is green and foggy. Some businesses are just reopening.
Tourism: Very light. Isle au Haut boat services begin their seasonal schedule; confirm dates before planning around it.
Good for photographers and anyone who wants the place to themselves. Pack bug spray.
