What should I avoid in Vestmannaeyjar?

The Herjólfur ferry from Landeyjahöfn looks simple on paper. A 35-minute crossing, around ISK 2,000 (~$16 USD) one way. The catch is Landeyjahöfn's harbor. Sand from the nearby Markarfljót glacial river builds up in the channel, and when Atlantic swells rise, the port closes. This happens 30 to 40 days per year, mostly between October and March, but sometimes in June too. The ferry reroutes to Þorlákshöfn, 90 km further east, which stretches the crossing to nearly 3 hours. You won't know until the morning of your trip. Check the Herjólfur schedule page before you drive south from Reykjavík. If timing matters, Eagle Air flies from Reykjavík domestic airport in about 20 minutes, though crosswind cancellations happen there too.

Vestmannaeyjar is one of the windiest inhabited places in the North Atlantic. Average wind speed runs around 8 m/s year-round, but gusts above 30 m/s hit Stórhöfði headland regularly. That headland is the main puffin-watching spot. The combination of 100-meter sea cliffs and no guardrails is real danger, not a signposted warning. At 15 m/s the wind feels like a firm shove against your chest. At 25 m/s it will stagger you. Stay low, keep off cliff edges, and grip the grass if a gust catches you. Today's temperature reads 10.2°C but feels like 5.4°C with wind chill. That's mid-June. Bring a proper windproof shell that seals at wrists and neck. Wool base layers handle the constant dampness, around 90% humidity most days, better than synthetic. A cotton hoodie will be soaked through and cold within 20 minutes.

Þjóðhátíð, the national festival in Herjólfsdalur valley, falls on the first weekend of August. It draws roughly 16,000 people to an island of 4,500. The valley fills with campfires, tent cities, and bass-heavy music that rattles windows in town until 4am. If you want puffins and quiet, come in late June or early July instead. The birds arrive around mid-April and leave by mid-August, so you still have weeks of overlap. Worth noting, don't walk off the marked paths near puffin colonies along Stórhöfði or the eastern cliffs. The burrows sit 50 to 80 cm below the turf, and a single footstep can collapse a nesting chamber. Every guesthouse on Heimaey books out 3 to 4 months before Þjóðhátíð, and the few Airbnb listings double or triple their nightly rates.

Heimaey has about 5 sit-down restaurants in summer, fewer from October through April. Slippurinn is the one most visitors target. It's a seasonal restaurant open roughly May through September in a converted machine shop by the harbor. A tasting menu runs around ISK 15,000 (~$120 USD), and it fills weeks ahead. For everyday meals, Gott near the harbor does solid fish and chips for around ISK 2,500 (~$20 USD). Stock up at the Krónan supermarket for breakfast supplies. The 1973 lava field on Heimaey's eastern slope looks walkable, but the jagged volcanic rock will chew through thin-soled shoes in an hour. Wear proper hiking boots. The lava still holds heat. Push your hand into a crevice near Eldfell's summit and you'll feel warmth at 150°C less than a meter below the surface, 53 years after the eruption.