What to Pack for Iceland (Yes, It Fits in a Carry-On)
A carry-on packing list for Iceland based on real monthly weather near Reykjavík, with the layering system that works for waterfalls, black-sand beaches and hot springs.
Iceland sounds like a big-suitcase trip, but it isn't. The trick is layers: a few thin, warm pieces you wear together, plus one good waterproof shell. That packs small, keeps you warm at windy waterfalls, and leaves room in a carry-on.
Iceland weather by month
Iceland is cooler than people expect in summer and milder than they expect in winter. Near Reykjavík, July highs average only 56°F (14°C), and January highs are around 35°F (2°C). The big factors are wind and rain, which come in every month, and they can change within an hour.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| January | 35°F (2°C) | 27°F (-3°C) | 6.0 in (152 mm) |
| February | 36°F (2°C) | 27°F (-3°C) | 5.9 in (151 mm) |
| March | 38°F (3°C) | 29°F (-2°C) | 5.2 in (133 mm) |
| April | 43°F (6°C) | 34°F (1°C) | 5.2 in (132 mm) |
| May | 48°F (9°C) | 38°F (4°C) | 4.8 in (122 mm) |
| June | 53°F (12°C) | 44°F (7°C) | 3.7 in (94 mm) |
| July | 56°F (14°C) | 47°F (8°C) | 3.3 in (85 mm) |
| August | 55°F (13°C) | 47°F (8°C) | 4.1 in (105 mm) |
| September | 51°F (10°C) | 42°F (6°C) | 5.4 in (137 mm) |
| October | 44°F (7°C) | 37°F (3°C) | 6.2 in (158 mm) |
| November | 39°F (4°C) | 32°F (0°C) | 5.1 in (129 mm) |
| December | 35°F (2°C) | 27°F (-3°C) | 5.3 in (135 mm) |
Monthly averages near Reykjavík, from Open-Meteo historical weather API (ERA5 reanalysis), 2015-2024. Model averages: real weather varies by town and height.
What that means for packing:
- Summer (June to August): cool, bright, with very long days. A waterproof shell, a warm mid layer and a hat, even in July.
- Spring and autumn: colder, windier and wetter. Add warmer layers, gloves and waterproof trousers.
- Winter (November to March): cold, dark and icy. A warm insulated jacket, thermal layers and shoe grips for icy paths.
The layering system
Pack in three layers and you can handle any day in Iceland:
- Base layer: thin merino wool or synthetic tops and leggings. They keep you warm even when damp. Avoid cotton.
- Mid layer: a fleece or a thick wool sweater.
- Shell: a waterproof and windproof jacket with a hood, plus waterproof trousers. This is the most important thing you pack.
The carry-on packing list
For a week, wearing the bulkiest items on the plane:
Clothes
- 2 to 3 base-layer tops and 1 pair of base-layer leggings
- 1 fleece and 1 warm sweater
- Waterproof jacket and waterproof trousers
- 2 pairs of trousers (hiking or comfortable travel trousers)
- Warm hat, gloves and a neck warmer
- Wool socks, 3 to 4 pairs
- Swimsuit for hot springs and pools
Shoes
- Waterproof hiking boots with good grip. Wear them on the plane.
- Light shoes or sandals for the hotel and pools
Gear
- Refillable water bottle. Tap water in Iceland is very good.
- Sleep mask for summer, when it barely gets dark
- Headlamp for winter
- Quick-dry towel for hot springs
- Phone power bank (the cold drains batteries fast) and a plug adapter for Iceland (type C / F)
What to wear at the famous spots
- Waterfalls like Seljalandsfoss and Skógafoss: you'll get wet from the spray. Waterproof jacket and trousers.
- Black-sand beaches like Reynisfjara: dangerous waves can reach far up the beach without warning. Stay well back from the water, and keep your layers on against the wind.
- Glacier lagoons like Jökulsárlón: cold wind off the ice, even in summer. Hat and gloves.
- Hot springs and pools: Icelandic pools ask everyone to shower without a swimsuit before going in. Bring a swimsuit and a quick-dry towel.
Will your bag fit the flight?
From the US, the major airlines include a full-size carry-on on flights to Europe on most fares. If you fly to Iceland on a low-cost airline from Europe, a full-size carry-on is often a paid extra, and some airlines weigh it.
Heavy boots and jackets make a cabin bag heavy fast, so wear them on the plane. A bag of **55 x 35 x 20 cm (21.7 x 13.8 x 7.9 in)** fits every European airline we track.
Check your own bag against every airline with the bag size checker, or see the Europe carry-on page and airlines that charge for carry-ons.
Quick tips
- Wear your big layers on the plane. Boots, jacket and sweater take up half a bag.
- Pack small, warm things. A hat and gloves weigh almost nothing and make the biggest difference.
- Check the weather and road conditions every morning. Plans in Iceland change with the wind.
