Building a low-impact campfire in damp conditions

Damp weather changes the rules

Anyone who has walked a British woodland in November knows the feeling: you have the skills, the knife, the fire steel, and still the little pyramid of twigs sits there sulking in the drizzle. Damp is not simply wet wood. It is moisture hanging in the air, soaking into your gloves, condensing on the underside of bark and settling into moss, leaf litter and the soft top layer of soil. Fire is a triangle of heat, fuel and oxygen, and damp attacks the first of those relentlessly — every drop of water in your tinder has to be turned to steam before anything will catch, and that costs heat you have not yet got.

The good news is that damp conditions are a puzzle rather than a barrier. Solve it with preparation, a patient build and a light footprint, and you get the particular pleasure of sitting still in cool, salt-tinged air while something small and well-behaved burns beside you.

Find a sheltered spot that will heal quickly

Wind carries heat away faster than rain puts it out, so shelter matters more than dryness. Look for a bank, a boulder, a thicket edge or the lee of a fallen trunk, and use it as a windbreak rather than a wall you build. Avoid anywhere with exposed roots, peat, deep moss, heather or standing dead trees — these are slow to recover and, in the case of peat, can smoulder underground for days.

Where you actually light the fire matters just as much. Use an established fire ring if one exists, and keep the fire small: roughly the size of your hand spread flat, never higher than your knee. If there is no ring, use a fire pan, a fire blanket or a shallow metal tray, or lift the fire onto a raised platform of two green logs with a bed of mineral soil between them. If you must work directly on the ground, scrape back leaf litter and organic material to bare soil, keep the scar small, and return the litter afterwards.

Do not ring a fire with stones pulled from a stream or from wet ground. They hold moisture, crack violently when heated, and leave blackened scars on rock slabs that last for years.

Find dry tinder when everything looks soaked

The trick is to think vertically. Water runs downwards, so the driest material is usually off the ground, under cover, or inside something.

• Birch bark: the outer papery layer of dead, fallen birch is rich in oils and will light even when damp on the surface. Peel it from fallen wood only, never from a living tree.
• Dead standing twigs: small twigs still attached to standing dead branches are often dry inside. Snap them; if they crack cleanly, they are good. If they bend, leave them.
• Feather sticks: split a finger-thick branch and carve shavings while leaving them attached. The inner core is usually dry and takes a spark beautifully.
• Dry grass or bracken: look under dense canopy, beneath rock overhangs, at the base of hedgerows, or inside a tussock of grass where the outer layer protects the core.
• Pine resin and hardened sap nodules: a natural accelerant, and it burns hot and long.
• A back-up: a small bundle of tinder carried from home in a sealed bag, plus cotton wool smeared with petroleum jelly. There is no shame in insurance.

Keep whatever you gather in a dry bag or an inside pocket. Cold, wet fingers lose fires; warm, dry hands keep them.

Kindling, fuel and the gradual build

Scale up in three stages and resist rushing. Begin with the finest material — grass, bark shavings, feather stick curls — and light it from one side, not the middle. Add twigs no thicker than a pencil lead, then pencil thickness, then thumb thickness. Each addition should be laid on gently, leaving gaps for air rather than pressing the fuel down.

Split wood is your best friend in damp weather. A branch that is wet outside is often dry within, and splitting it exposes that dry core. Feed the fire from one side so the heat stays concentrated, and shelter the growing flame with your body or a hand until it is established.

On the coast, one important exception: do not burn driftwood that has been soaked in seawater. Salt-laden wood releases toxic compounds when burned, spits dangerously, and corrodes cooking equipment. Admire it, use it as a windbreak, and leave it in place.

Keeping the impact low

A low-impact fire is small, short-lived and tidy. Gather only dead and fallen wood — never cut from living trees, and never strip bark from a standing trunk. Keep the fire contained, and keep it modest enough that you can comfortably sit close to it rather than watching it from a distance. The warmth comes from proximity, not size.

Take away everything that will not burn down to clean ash, including foil, plastic wrappers and food scraps. Scatter the cold ash thinly and widely, well away from the fire site, and return any leaf litter you moved. When you leave, the spot should look as though you had simply paused there for a while.

Putting it out properly

Damp conditions can be deceptive. A fire that looks finished may still be holding heat in its core, and buried embers can smoulder in roots or humus long after you have walked away. Douse with water, stir the ashes thoroughly, douse again, then check by hovering the back of your hand close to the ash — you should feel no warmth at all. Repeat until that is true.

If water is scarce, smother the fire with mineral soil, stir, and smother again. Then take a moment to look at the site with fresh eyes. A well-built campfire in wet weather is a small, careful thing: a handful of dry tinder, a few split sticks, a sheltered spot and a patient pair of hands. Done well, it leaves nothing behind but a memory of warmth.