Iceland in May: Midnight Sun Begins, Crowds Haven't

Weather and Temperatures in May

May is when Iceland shakes off the last traces of winter and starts to feel genuinely pleasant. Average temperatures in Reykjavik sit between 5 and 10°C, which sounds modest until you factor in the wind chill. Coastal areas and the north tend to run a couple of degrees cooler, while sheltered southern valleys can surprise you with afternoon warmth that actually invites you to unzip your jacket.

The weather in May is famously unpredictable, even by Icelandic standards. You might get brilliant sunshine in the morning, sideways rain by lunch, and a calm golden evening. Snow is still possible in the north and at higher elevations, though it rarely sticks around at sea level. Wind is the constant companion, so checking the Icelandic Met Office forecasts (vedur.is) daily is essential. If you are coming from an April visit, you will notice a real difference in both temperature and greenery.

The upside of this variability is the light. By mid-May the landscape is bathed in a soft, warm glow for most of the day, and photographers will find the conditions extraordinary. Waterfalls catch golden hour light at times that would be midnight anywhere else.

Daylight Hours

This is where May in Iceland gets truly special. At the start of the month, you are looking at roughly 18 to 19 hours of daylight. By the end of May, the sun barely dips below the horizon at all, giving you near-continuous light and the first taste of the famous midnight sun.

Technically, the midnight sun (when the sun does not set at all) does not begin in Reykjavik until mid-June. But in practice, by late May the sky never truly darkens. There is a golden twilight around midnight that lasts perhaps an hour before the sun climbs again. In the north, near Akureyri and Husavik, the effect is even more pronounced, and you may see the sun sitting on the horizon at 1am.

This endless daylight is transformative for travel. You can drive the Ring Road without worrying about running out of light. You can hike until 10pm and still have golden sunshine. You can photograph landscapes at hours that would be pitch black in most countries. The only downside is sleep: bring an eye mask or choose accommodation with blackout curtains, because your body will genuinely struggle to know when bedtime is.

Road Conditions

The Ring Road (Route 1) is fully passable in May, and conditions are generally good. Snow and ice may still appear on mountain passes in the north and east, particularly the stretch between Akureyri and Egilsstaðir, but closures are rare. Always check road.is before setting out on longer drives.

The major caveat is the highland F-roads. These mountain tracks remain closed until late June or even July, depending on snow melt. If your heart is set on Landmannalaugar, Askja, or the Kjölur route, May is too early. Plan those for July or August instead.

That said, most of the destinations visitors want to see, the Golden Circle, the South Coast, Snæfellsnes, and the Diamond Circle, are fully accessible. Gravel roads to places like Stokksnes or the Westfjords are passable but may have soft patches from spring thaw. A standard car handles the main routes fine, but if you are planning to explore more remote areas, a 4x4 gives you peace of mind. The Iceland Blueprint includes detailed driving routes with distances and conditions, which is invaluable for planning a May road trip.

Best Things to Do in May

May is when Iceland's natural calendar gets exciting. The combination of improving weather, returning wildlife, and fewer tourists makes it arguably the most rewarding month for outdoor experiences.

Whale watching kicks into high gear in May. Husavik, often called the whale watching capital of Europe, sees humpback whales returning in large numbers. Minke whales, dolphins, and harbour porpoises are also common. The seas are generally calmer than in winter, making for more comfortable boat trips.

Puffins arrive at their nesting colonies in late April to early May. By mid-May, you can see them at Látrabjarg in the Westfjords, the Vestmannaeyjar (Westman Islands), and Borgarfjörður Eystri in the east. These comical, photogenic birds are one of Iceland's most beloved attractions, and May offers the chance to see them before the summer crowds descend. Our guide to puffin season has everything you need to plan a visit.

Hiking trails begin opening as snow melts from lower elevations. Þórsmörk valley, Skógafoss, and trails around Skaftafell are accessible, though higher routes may still have snow patches. It is a magical time to hike because the trails are quiet and the light is extraordinary.

Reykjavik's cultural scene comes alive in May. The city shakes off its winter introversion, café terraces open, and there is a palpable buzz. Museum Night and the Reykjavik Arts Festival both take place in May, offering concerts, exhibitions, and events across the city.

Lupins bloom across southern Iceland in late May, carpeting hillsides and lava fields in purple. Love them or loathe them (they are technically invasive), the visual effect is stunning and makes for incredible photography.

What to Pack for May

May packing is all about layers and versatility. The temperature swings within a single day can be dramatic, and you need to be ready for sunshine, rain, and wind, sometimes within the same hour.

A quality waterproof and windproof outer layer is non-negotiable. Gore-Tex or similar breathable fabrics are ideal.
Thermal base layers for cooler days, especially if you are heading north or doing early morning activities.
A warm fleece or down mid-layer. Evenings can be chilly even when days are pleasant.
Sturdy, waterproof hiking boots if you plan to walk anywhere off paved paths.
Sunglasses are essential. The combination of low-angle sun and near-24-hour daylight means you will be squinting without them.
A sleep mask. Seriously. The bright nights will keep you awake without one.
Sunscreen. UV exposure is real, especially near water and glaciers where light reflects.

For a comprehensive packing list with brand recommendations and seasonal specifics, check our complete packing guide.

Crowds and Pricing

May is the sweet spot between Iceland's quiet winter season and the tourist avalanche of June through August. Visitor numbers are climbing but have not yet reached peak levels, which translates into real practical benefits.

Accommodation is easier to find and often 20 to 30 percent cheaper than peak summer rates. You can still book popular guesthouses and farm stays just a few weeks in advance, whereas July requires months of forward planning. Rental cars are similarly more available and affordable, though prices have risen in recent years across the board.

Popular attractions like the Golden Circle, Jökulsárlón glacier lagoon, and the Blue Lagoon are noticeably less crowded in May. You will not have Seljalandsfoss waterfall to yourself, but you also will not be queuing 20 deep for a photo. The experience is simply better with fewer people around.

Restaurants in Reykjavik are easier to get into without reservations, and domestic flights to Akureyri or the Westfjords have more availability. If budget is a factor in your planning, May offers the best balance of good weather, long days, and reasonable prices.

Northern Lights in May

Here is the honest truth: your chances of seeing the Northern Lights in May are very slim. By early May, the nights are too bright for aurora viewing in most of Iceland. The sky simply does not get dark enough for the lights to be visible, even during strong solar activity.

If the aurora is a priority for your trip, September through March is your window. For real-time aurora forecasts and alerts, williseeaurora.com is the best resource. But do not let the absence of northern lights put you off May. What you gain in daylight, wildlife, and accessibility more than compensates.

Why May Might Be Iceland's Best-Kept Secret

Ask experienced Iceland travellers when to visit and many will say June or July. The weather is warmer, everything is open, and the midnight sun is in full effect. But a growing number of repeat visitors will quietly tell you that May is their favourite month, and here is why.

May gives you almost everything summer offers, the long days, the accessible roads, the returning wildlife, but without the crowds that can make popular sites feel like theme parks in July. You get puffins and whales, wildflowers and waterfalls, and you get them with space to breathe.

The shoulder-season pricing is a genuine advantage. Iceland is expensive at the best of times, and saving 20 to 30 percent on accommodation and car hire makes a meaningful difference over a week-long trip. Those savings could fund an extra whale watching tour, a glacier hike, or several meals at Reykjavik's excellent restaurants.

There is also something magical about the transition from spring to summer that May captures perfectly. The landscape is waking up. Lambs appear in fields, grass pushes through lava, and the air smells different from the cold, sharp winter. It is a hopeful, energetic time, and it infects your mood as a traveller.

The main trade-off is weather unpredictability and closed highland roads. If you specifically want to drive into the interior or guarantee warm, calm days, wait until July. But if you are flexible, curious, and happy to dress for the conditions, May rewards you with an Iceland that feels more authentic and less performative than peak summer.

For help planning a May trip, including day-by-day itineraries, driving routes, and accommodation suggestions, The Iceland Blueprint is designed to handle exactly this kind of trip planning, so you can spend less time on logistics and more time watching puffins.