Avoid cotton
Cotton holds sweat and stays damp, which can make you cold. Choose merino wool or synthetic fabrics next to your skin.
Layer for the day
Start with a base layer, add fleece or insulation when you stop, and carry a waterproof shell. Remove layers before climbing hard.
Protect from the sun
Wear a hat, sunglasses and sunscreen. Cover your neck and arms where practical.
Prepare for evenings
Keep a warm jacket, hat, gloves and dry socks for cold teahouse evenings and early mornings.
Match clothing to effort and altitude
You may feel warm while climbing and cold within minutes of stopping. Open vents or remove a layer before you become soaked with sweat; add insulation during breaks. At higher elevations, direct sun can be strong even when the air is cold, so use sunglasses, sunscreen and a hat. Keep gloves and a warm hat easy to reach on exposed sections.
Rain and wind need their own protection
A water-resistant windbreaker is not the same as a waterproof shell. In wet conditions, use a properly fitting waterproof jacket and trousers, and protect spare clothing inside your pack. Quick-drying fabrics are useful because cotton can stay wet for a long time. Bring enough socks to rotate pairs and address hot spots early to reduce the chance of blisters.
Plan for the coldest part of the itinerary
Choose layers for the highest and coldest point of your route, not only the village where you start. Ask about expected temperatures and whether you will be out before sunrise. Clothing recommendations are seasonal and route-specific; confirm them with a knowledgeable local guide before departure.