How to Layer Your Clothing for Fall and Winter Hikes

According to REI’s Expert Advice article “Layering Basics”, it’s important to adhere to the three-layer system when dressing for a hike. “Even if you don’t wear all three layers at the outset, it’s a good idea to take layers on every outing: You can peel layers off if things heat up, but you can’t put on layers you didn’t bring along.”

1. Base layer: Your base layer’s primary job is to wick away moisture. Avoid cotton—it soaks up sweat and stays wet. Instead, choose wool or polyester/synthetic fabrics.
2. Mid-layer: The purpose of your mid-layer is to provide insulation and warmth. Fleece, down or synthetic insulated jackets are perfect. Make sure to choose something you can easily add or remove depending on your activity level and the weather.
3. Outer layer (shell): This is your shield against wind, rain and snow. Look for a waterproof, breathable jacket to protect your other layers.

• Cotton: Problematic for cold-weather hiking because it absorbs and holds moisture. Once wet, it loses insulating ability and can conduct body heat away, increasing hypothermia risk.

• Wool: According to the Minus33 Merino Wool, wool still retains some insulation even when damp, and is also naturally odor-resistant. We recommend looking for socks, base layers and hats made with wool material.
• Polyester (synthetic): Lightweight, durable, quick-drying, and typically more affordable than wool, though they may not match wool’s comfort or odor performance in all circumstances.

• Always pack an extra layer.

• Bring an extra pair of socks.

• Don’t forget a hat and gloves; you lose a lot of heat through your head and hands.
  
  
• Be vigilant when it comes to the risk of hypothermia. Even in the warmer month of June 2025, New Hampshire Fish and Game answered 10 calls from hypothermic hikers. So make sure to stay dry; wet clothing is almost impossible to dry in cool temperatures.

Now that you know how to layer properly, you’re ready to explore New Hampshire’s trails even during those colder months. See you out there!