How to Layer for Hiking in Iceland
Layering for Iceland is about managing moisture and wind, not just heat. You need a moisture-wicking base layer, an insulating mid-layer like fleece or wool, and a completely windproof and waterproof outer shell.
- Start with the base layer. Wear a long-sleeve base layer made of 100% merino wool or synthetic material. Avoid cotton at all costs; if it gets wet from sweat or rain, it stays cold and damp against your skin for hours.
- Add an insulating mid-layer. Add a fleece jacket or a lightweight wool sweater. If the forecast is below 5°C (41°F), pack a synthetic 'puffy' jacket to wear between your fleece and your shell.
- Seal with a hard-shell outer layer. Your outermost layer must be a technical rain jacket rated for at least 20,000mm of water resistance. It needs a hood that adjusts tightly so it doesn't blow off in Iceland's gale-force winds.
- Manage your lower half. Wear thermal leggings under hiking trousers. Always carry a pair of over-pants (rain pants) in your daypack to pull over your hiking trousers the moment the horizontal rain starts.
- Can I just bring a big winter parka?
- No. A parka is often too bulky to hike in and will make you sweat. If you get sweaty and then stop to rest, you will freeze. Layers allow you to vent heat as you move.
- Is denim okay for hiking?
- Absolutely not. Denim is heavy, non-breathable, and takes days to dry. It is dangerous in Iceland's wet, unpredictable climate.