Guided Tour with General Admission

April to October, with June to August the most reliable. Humpbacks and minke whales feed in Faxaflói off Reykjavík and in the northern fjords all summer, and white-beaked dolphins and harbour porpoises turn up on most trips. Winter boats still sail from Reykjavík, but sightings drop and the sea is rougher. If whales are the point of your trip, come in summer and book an early departure; seas are usually calmer in the morning.

Sometimes. Boats run from the Old Harbour all year, and winter trips do find whales, mostly humpbacks and the occasional orca. But December means short daylight, cold wind and a higher chance the operator cancels for weather. Sightings are noticeably less frequent than in summer. If you are here in winter, go anyway, but treat it as a sea trip with a chance of whales rather than a whale trip. Most operators offer a free second trip if nothing shows.

Húsavík, if you can get there. Skjálfandi Bay in the north sees humpbacks close to shore from May to September, and the small family-run boats like Friends of Moby Dick (/experience/752602/) keep group sizes down. Reykjavík is more convenient: boats leave the Old Harbour five minutes from most hotels and run all year. Akureyri and Dalvík in Eyjafjörður are also strong. If you are only in Reykjavík, go from Reykjavík and do not feel short-changed.

You might. Faxaflói is open sea and the boats roll, especially in wind. Take a tablet an hour before departure, stay on deck in fresh air and watch the horizon rather than your phone. Morning trips tend to be calmer than afternoon ones. If you know you suffer badly, a two-hour RIB trip (/experience/155331/) is faster and bumpier but shorter, or pick a northern fjord like Eyjafjörður, which is more sheltered than the bay off Reykjavík.