Yes, you can grill with charcoal in winter. Use more fuel than you would in summer, light it in a chimney starter, shield the grill from wind, keep the lid closed and rely on a thermometer rather than the clock. The hard limits are about safety, not food: never burn charcoal indoors or in a garage, because the CDC warns that charcoal grills produce carbon monoxide; keep the grill clear of the house; and watch the fire, since cold weather tempts people to wander back inside. Here is how to make a charcoal fire behave when the temperature drops.
Why Cold Weather Changes a Charcoal Fire
A charcoal grill heats food by radiant heat from the coals and by hot air trapped under the lid. In winter, both are under pressure:
- The metal body loses heat to cold air much faster, especially a thin-walled kettle.
- Wind strips heat from the outside of the grill and can pull air through the vents in unpredictable ways, making the fire run hot or die down.
- Cold food takes longer to warm, and every lid opening lets in cold air that the coals have to reheat.
- Damp charcoal lights poorly. Bags left in an unheated shed or garage pick up moisture.
USDA’s Food Safety and Inspection Service lists the temperature of the outside air among the factors that change cooking time in its guidance on grilling and smoking, in Turkey: Alternate Routes to the Table. The same guide advises placing a smoker in an area shielded from winds to maintain a safe cooking temperature. That advice applies just as well to a kettle.
Safety First: Placement and Carbon Monoxide
The temptation in winter is to move the grill somewhere sheltered, like a garage, carport or enclosed porch. Do not. The CDC’s carbon monoxide guidance names charcoal grills as a source of carbon monoxide and says plainly: never burn charcoal indoors. The CDC lists symptoms including headache, dizziness, weakness, upset stomach, vomiting, chest pain and confusion.
Other placement rules hold year-round. NFPA’s grilling safety guidance says grills are for outdoor use only and should be kept well away from the home, deck railings and eaves. FSIS’s Smoking Meat and Poultry fact sheet adds: set up in a well-lit, well-ventilated area away from trees, shrubbery and buildings, and use only approved fire starters, never gasoline or paint thinner. Our grill safety checklist collects the rest.
Two winter-specific points:
- Clear the snow and ice from the area around the grill so you are not juggling a hot lid on a slippery patio. Make sure the grill stands on a level, stable surface.
- Watch loose clothing. Scarves, long sleeves and puffy jacket cuffs hang closer to the grate than a T-shirt does.
Lighting Charcoal in the Cold
A chimney starter is the best tool in winter. It concentrates heat, protects the fire from wind while it gets going, and needs no lighter fluid. If you have not used one before, our guide to using a chimney starter walks through it.
- Use dry charcoal. Store it in a sealed, waterproof container off the ground. Damp charcoal is slow and stubborn to light, and cold makes it worse.
- Light the chimney out of the wind, on the grill’s charcoal grate with the bottom vents open.
- Give it longer. FSIS notes that charcoal takes about 10 to 20 minutes to get red hot with gray ash, depending on quantity. In cold weather, expect the longer end or beyond.
- Pour when the top coals are ash-covered, then put the lid on right away to start heating the cooking chamber.
Managing the Fire
Use more fuel
Plan on more charcoal than your summer habit. The grill body is absorbing heat, and the fire has to make up for it. For long cooks, keep a second chimney of lit coals ready rather than adding cold charcoal that will drag the temperature down. FSIS’s smoking guidance suggests adding about 15 briquettes every hour on a charcoal smoker and about 10 every hour when smoking in a covered grill; in winter you may need more.
Use the vents, then leave them alone
Wind will make vents behave differently than on a still day. Make small adjustments and wait several minutes to see what happens before adjusting again. The intake vent feeds the fire; the exhaust vent pulls air through, so change one at a time.
Turn the grill to the wind
Position the grill so the lid’s hinge or a solid side faces into the wind, not the open vents. A wall or fence on the windward side helps, provided the grill is still well away from the house. Never wrap a charcoal grill in blankets or insulation that was not made for it.
Keep the lid closed
Every look costs heat that takes minutes to recover in cold air. A leave-in probe with a wireless or wired display lets you track the food from indoors. That also helps you resist the urge to keep checking.
What to Cook in Winter
Winter grilling is easier when you pick food that suits the conditions:
- Quick-cooking items such as steaks, chops, sausages, kebabs and burgers need only a short time outside and benefit from a hot fire.
- Medium roasts such as a tenderloin, a pork loin or a spatchcocked chicken work well with a two-zone fire and a probe.
- Low-and-slow cooks are possible but use a lot more fuel and attention. If you want a winter project, a smaller cut is more forgiving; our sister site’s comparison of choosing between chuck and brisket for a long smoke is useful here.
Whatever you cook, the safe internal temperatures do not change with the weather. Use a food thermometer, especially in winter, when cooking times are less predictable. If you use propane rather than charcoal, cold affects tank pressure differently; see our guide to cold-weather propane grilling.
Shutting Down
Close all vents and the lid to put the fire out. NFPA advises letting coals cool completely before disposing of them. Never put warm ash in a plastic bin, paper bag or near anything that can burn. In snow, it is tempting to dump coals out; do not, because hidden embers can stay hot. Once cool, empty the ash so moisture does not sit against the grill’s bowl and cause rust.
Frequently Asked Questions
Can I use my charcoal grill in the garage if the door is open?
No. The CDC says never to burn charcoal indoors, and names charcoal grills as a source of carbon monoxide. Grill outdoors, well away from the house.
Do I need more charcoal in winter?
Usually, yes. A cold grill body and wind take heat from the fire, so start with more fuel and keep a second chimney lit for long cooks.
How do I keep the temperature steady in the wind?
Shield the grill from the wind, face the vents away from it, make small vent changes, and keep the lid closed. USDA FSIS advises placing smokers out of the wind for the same reason.
Is lighter fluid a good idea in cold weather?
A chimney starter is more reliable in the cold and avoids the fluid altogether. USDA FSIS says to use only approved fire starters, never gasoline or paint thinner.
How should I dispose of charcoal ash in winter?
Let it cool completely in the closed grill, as NFPA advises, then empty it into a metal container away from anything combustible.