Recognising Hypothermia Signs on Winter Walks

Why Winter Walks Catch People Out

There's nothing quite like a crisp winter walk. But the same conditions that make a winter landscape beautiful can turn dangerous quickly. Hypothermia isn't reserved for polar explorers. It can happen on a low-level walk in the Peak District or a coastal path in Scotland. Wet, windy and cold is the classic combination. Add tiredness, hunger, or a sudden change in weather, and your body loses heat faster than it can produce it. Recognise the early signs and act fast. As a bushcraft instructor, I've seen how quickly a shivering walker can become a confused one – and how simple shelter and dry layers can turn things around.

The Early Signs: Shivering, Cold Hands, and the "Umbles"

Mild hypothermia is your body's first clear warning. The core temperature drops, and your body responds by shivering – involuntary muscle contractions designed to generate heat. At this stage, look for:

• Persistent shivering that doesn't stop when you add a layer or pick up the pace.
• Cold, pale skin – especially on hands, feet, and face.
• Clumsiness – fumbling with zips, dropping gloves, tripping.
• Slurred speech or muddled words.
• Confusion or apathy – the person may become quiet, irritable, or insist they're fine.

Old hands talk about the "umbles": grumbles, mumbles, fumbles, and stumbles. If you see any of these, treat it as a genuine emergency. Don't wait for the shivering to stop – that's a sign things are getting worse.

When Shivering Stops: The Danger Deepens

If a shivering person suddenly stops shivering, they are not warming up. They are entering moderate to severe hypothermia. Their body has run out of energy to shiver, and the core temperature is falling further. Look for:

• Drowsiness or unwillingness to move.
• Slow, shallow breathing and a weak pulse.
• Loss of coordination – stumbling, slurred words, unresponsive.
• Rigid muscles and pale, blue-tinged skin.

Be gentle. Rough handling can send cold blood from the limbs back to the core, shocking the heart. Do not rub their limbs or give alcohol. Get them out of the wind and wet, insulate from the ground, and rewarm slowly.

Shelter First: Bushcraft Skills That Buy You Time

In a winter emergency, shelter is your first line of defence. Wind and wet strip heat from the body far faster than cold air alone. If you carry a tarp, group shelter, or bothy bag, deploy it immediately. A simple A-frame or lean-to pitched with the back to the wind makes a huge difference. Without manufactured shelter, use natural features: the leeward side of a rock face, a dense stand of conifers, or a hollow in the ground. Build a wall of snow, branches, or rucksacks to block the wind. Crucially, get the person off the ground. Conductive heat loss through cold rock or snow is brutal. Sit them on a rucksack, sleeping mat, or a thick layer of spruce boughs, bracken, or dry leaves.

Dry Layers and Warm Drinks: The Core of Rewarming

Once sheltered, remove any wet clothing. Cut it off if you have to – don't force limbs through sleeves if the person is clumsy or rigid. Replace it with dry layers. Wool, fleece, and synthetic insulation are your friends. Add a hat and gloves; a huge amount of heat is lost through the head and neck. Wrap them in a sleeping bag, foil blanket, or dry jacket. If you have a spare dry person, get them in the same sleeping bag for skin-to-skin warmth – one of the most effective rewarming methods.

Offer a warm, sweet drink if the person is fully conscious and can swallow. Sugary tea, hot squash, or sweetened hot chocolate provides energy and warmth. Avoid alcohol – it dilates blood vessels and increases heat loss. Never give food or drink to someone who is drowsy or unresponsive. Warm the core first: apply gentle heat to the neck, armpits, and groin using your own body heat or warm (not hot) water bottles wrapped in fabric. Never place a hot water bottle directly on skin.

Prevention: Better Than Any Rescue

The best bushcraft skill is avoiding hypothermia altogether. Check the forecast – wind chill matters more than temperature. Wear layers: a wicking base layer, an insulating mid-layer, and a waterproof and windproof shell. Eat regularly; your body needs fuel to produce heat. Carry a flask of hot drink and high-energy snacks. Pace yourself to avoid sweating, because wet clothes cool you rapidly when you stop. Keep an eye on your companions. If someone starts shivering and can't stop, call it early. Turn back, put up shelter, or head to a lower, sheltered spot. There's no shame in cutting a walk short. A warm, safe return is always the best outcome.