Quick Answer
Wind can significantly reduce the performance of cold weather gear, such as jackets and pants, by increasing heat loss through evaporation and convection. A strong gust can lower the effective temperature by as much as 20-30 degrees Fahrenheit. This can lead to hypothermia if not managed properly.
Wind and Moisture
When wind blows, it strips away the layer of warm air closest to the skin, increasing the rate of heat loss and making the body feel colder. This phenomenon is known as wind chill. Additionally, wind can drive moisture into the clothing, making the wearer feel colder due to the evaporative cooling effect. To mitigate this, it’s essential to wear clothing that is designed to prevent wind and moisture from penetrating to the skin.
Cold Vapor Barrier Liners
Cold vapor barrier liners are designed to prevent moisture from reaching the skin, thereby reducing the risk of hypothermia. These liners are usually made of thin, breathable materials like Gore-Tex or eVent. They are ideal for high-wind conditions, as they provide an additional layer of protection against wind-driven moisture. In such conditions, it’s recommended to wear a cold vapor barrier liner under a windproof and waterproof outer layer to maximize warmth and dryness. A good starting point for choosing the right liner is to consider its breathability and wind resistance. A liner with a breathability rating of at least 15,000 g/m²/24h and a wind resistance of 30 mph or higher is a good starting point.
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