Norwegian Coastal Voyage in May

October through March delivers the northern lights but also rough seas and limited daylight—by December you get maybe 4 hours of twilight above the Arctic Circle. The aurora season peaks in February when skies are clearest. Summer voyages from May to September offer midnight sun and calmer waters, perfect for zodiac landings and hiking excursions. July brings wildflowers to the tundra and the best weather for deck time. But here's the trade-off: summer costs 40% more and you won't see the northern lights. September hits the sweet spot with fewer crowds, decent weather, and early aurora activity. Avoid April when it's too late for good northern lights but too early for pleasant weather.