Canada · cold weather safety

Hypothermia for Hunters

By Hunters Guide. Checked against HealthLink BC and CCOHS sources on September 18, 2026.

Hypothermia is your body losing heat faster than it can make it. It catches hunters in cool, wet, windy weather far more often than in deep cold. Shivering comes first. Then clumsy hands, stumbling, slurred words and confusion. Stop the heat loss before you add heat.

Hunter education treats hypothermia as a topic in its own right, not a footnote to first aid. That tells you how often it turns up in the field. It also tells you how early it has to be caught.

The signs of hypothermia, in order

The signs of hypothermia arrive in a rough sequence, from shivering and clumsy movement through slurred speech to confusion and poor judgement. The order is what matters. Early links are easy to fix. Late ones aren't.

Shivering comes first, and it is steady shivering rather than a passing shudder. Your body is burning fuel to make heat, and it isn't asking permission.

Next, your hands go stupid on you. Watch for that one. Zips you can't start. A knot you've tied a thousand times. A fumbled bottle cap. Fine motor control goes early, and it goes obviously, if anyone's looking.

After that comes the stumbling, balance running half a second late. HealthLink BC lists "mild unsteadiness in balance or walking" right alongside shivering. Speech goes next, slow and thick. Then confusion, apathy, insisting they're fine when they plainly aren't.

Once judgement goes, the person can't be trusted to read their own condition. So the check is never "do you feel cold?" Watch their hands and listen to their words. Notice when they go quiet. To test whether that order has stuck, try the Alberta hypothermia practice questions.

Shivering that stops is a warning, not a recovery

Shivering is involuntary muscle work the body uses to generate heat, so shivering that fades while the person is still cold means the body can no longer keep it up. HealthLink BC lists "Shivering, which may stop if body temperature drops below 32°C (90°F)". That's a marker of how far things have gone. It isn't improvement.

People misread this moment. Someone who was shaking badly goes still, and everyone around them relaxes, which is the wrong reaction.

If a person stops shivering while still cold, especially if they're confused or drowsy, they need emergency medical help now. HealthLink BC doesn't soften it: "Hypothermia is an emergency condition. It can quickly lead to unconsciousness and death if the heat loss isn't stopped." Call 911, and keep working on the heat loss while you wait.

Treating hypothermia, in order

Field treatment for hypothermia is a sequence rather than a list: stop further heat loss first, then add heat gently. Do it backwards and you're pouring warmth into a bucket with a hole in it.

1. Out of the wind. Behind a deadfall, into thick timber or the truck, under a tarp. CCOHS starts in the same place: "Move the person out of the cold, and/or insulate the person".
2. Wet clothing off. HealthLink BC keeps it short: "Remove cold, wet clothes." For as long as wet layers stay on, they're working against you.
3. Dry insulation on. Everything anyone can spare, head included. Put something underneath them too, since bare ground pulls heat out steadily.
4. Warm sweet drinks, mild cases only. CCOHS gives food or warm drinks, caffeine-free and non-alcoholic, "ONLY if the individual has mild hypothermia". That means fully alert and swallowing normally. Any doubt, nothing by mouth.
5. Get help moving. Anything past mild, or with any confusion or drowsiness in it, is a job for professional medical care. Make that call early.

Handle them gently. Keep them still. This isn't a race you win by being brisk.

Why rubbing and fast rewarming are wrong

Rubbing cold skin and rewarming someone quickly are both warned against in Canadian first aid guidance. CCOHS puts it in two flat instructions: "DO NOT massage or rub the skin." and "DO NOT rewarm the person too quickly (e.g., do not use a heating lamp or stove)".

You can see where the instinct comes from. Cold hands? Rub them. But cold tissue is numb and fragile, and the person can't feel how hard you're going or how hot that fire is. Stick with dry insulation and shelter, and be patient. Slower is correct here.

Why does hypothermia happen in mild weather?

Hypothermia is a fall in core body temperature below the range your body needs to work properly. It doesn't need freezing air to get going. HealthLink BC puts the threshold warmer than most people would guess: "Your body temperature can drop to a low level at temperatures of 10°C (50°F)", and it can drop "even if it is warmer than 10°C (50°F) if you are out in wet and windy weather".

Think about what that describes. A grey October morning at eight degrees. Drizzle that never quite becomes rain, and a breeze off the ridge. Nobody dresses for eight degrees the way they'd dress for minus twenty.

Then it stacks up. Damp layers stop insulating and start cooling you. The wind strips warm air off your clothing as fast as you make it, and you sit still for hours, because that's mostly what hunting is. Deep cold gets respect. Eight degrees and wet doesn't. If a morning like that turns into a night out, see wilderness survival for hunters.

Does alcohol warm you up?

Alcohol creates a sensation of warmth while increasing heat loss, which makes it one of the more dangerous things in a cold camp. It widens the blood vessels near your skin. Warm blood rushes to the surface, and you feel flushed.

Trouble is, that blood now sits exactly where the wind can strip the heat out of it. You feel warmer while you're getting colder.

CCOHS allows warm drinks for mild cases only, and only non-alcoholic ones. HealthLink BC adds: "Alcohol may affect your judgment." That's the judgement you need to spot trouble, and hypothermia is already attacking it on its own.

What to wear to stay ahead of it

Clothing for cold, wet hunting is layers of wool or synthetics under a windproof, waterproof shell, because those fibres keep insulating when damp. HealthLink BC recommends "moisture-wicking fabrics, such as wool, polyester, or nylon (not cotton)".

Cotton is the problem child. It soaks up water and holds it against your skin. Almost all of its insulating value goes, and it keeps cooling you for hours.

Two habits matter more than any single garment. On the walk in, shed a layer so you don't arrive soaked in your own sweat, and put it back on when you sit down. Then keep one dry layer bagged in your pack. Fabrics, boots and the rest of the kit are in hunting clothing and equipment.

Questions about hypothermia

At what temperature can hypothermia happen?

Far warmer than most hunters expect. According to HealthLink BC, body temperature can drop to a low level at 10°C, and can drop even above 10°C if you’re out in wet and windy weather. The classic combination is cool, damp and breezy.

Is it a good sign when someone stops shivering?

No. Usually it’s the opposite. Shivering is the body making heat. When it fades while the person is still cold, that points to deterioration, not recovery. Treat it as an emergency and get professional medical help.

Should you rub a cold person’s hands and feet?

No. The Canadian Centre for Occupational Health and Safety says not to massage or rub the skin. It also says not to rewarm the person too quickly with something like a heating lamp or stove. Gentle handling and dry insulation instead.

Can you give a hypothermic hunter coffee or alcohol?

Neither. Alcohol is out entirely, and caffeine is avoided too. Warm sweet non-alcoholic drinks are for mild cases only, where the person is fully alert and swallowing normally. If there’s any doubt at all, nothing by mouth.

What clothing helps prevent hypothermia while hunting?

Wool or synthetic layers under a windproof, waterproof shell. HealthLink BC recommends wool, polyester or nylon. Specifically not cotton: it holds water against your skin and keeps cooling you long after the rain stops.