How to Keep Kids Warm Trick or Treating: A UK Parent's Guide

To keep kids warm trick or treating, put the warmth under the costume rather than on top of it. Dress them in a thin long-sleeved top and leggings or thermals, add thick socks and comfortable, waterproof shoes, then finish with a hat and gloves that suit the character. Carry a coat for the walk between streets, keep the route short with a set time to head home, and check hands and noses as you go.

Halloween falls on Saturday 31 October this year, the week after the clocks go back on 25 October. That means it will be dark well before 5pm across the UK, and most children will be out in the coldest part of the day rather than the mild afternoon. This guide covers how to layer under a costume, keeping hands, feet and heads warm, what to do if it rains, and a few safety points that matter more in fancy dress than in everyday clothes.

Why trick or treating gets cold so quickly

A late October afternoon can feel pleasant, but the temperature often drops quickly once the sun goes down, especially on clear nights. At the same time, children slow right down. They walk a few doors, stand on a doorstep, wait for an answer, then walk again. That stop-start pattern produces far less body heat than a brisk walk.

Costumes do not help. Most are made from thin polyester, felt or net, so they look the part but offer little insulation and almost no protection from wind or drizzle. Children also lose heat faster than adults, so a child can be cold and miserable while the grown-up beside them still feels fine.

How to layer under a Halloween costume

The aim is to add warmth without changing how the costume looks. Thin layers do this far better than one thick jumper, which can stop zips closing and make the costume bunch up.

1. Start with a thin base layer

A close-fitting long-sleeved top and leggings, thermals or thick tights make the best base. Pick colours that blend in: black under a witch, vampire or cat costume, white or grey under a ghost or skeleton. With short sleeves or a skirt, the base layer becomes part of the outfit, so match it.

2. Add a mid layer only if it fits

On a colder night, a thin fleece or jumper can go on top of the base layer. Before you leave, ask your child to bend their arms, crouch and sit on the floor in the full outfit. If they can do all three comfortably and the costume still fastens, the layers work. If not, take the mid layer off and pack it instead.

3. Choose a costume with room for layers

If you have not bought a costume yet, a size up gives space for thermals underneath and often lasts for another dressing-up day. Full-length costumes, onesie-style outfits, robes and capes are naturally warmer than short or sleeveless designs. A cape or cloak adds a layer over the shoulders while staying in character.

4. Bring a coat, but carry it

Many children refuse a coat because it hides the costume. Carry one instead and put it on for longer walks between streets. On a very cold or wet night, the coat wins.

Keeping hands, feet and heads warm

Hands, feet and ears get cold first, and they usually end the evening early. Small accessories often help more than another layer.

Hats that work with the costume

A hat keeps a lot of warmth in and is easy to build into most outfits. A plain black knitted beanie suits witches, cats, ninjas, pirates and burglars, and it fits under a hood or a witch's hat if you need extra warmth. Our kids' black knitted beanie is a one-size hat that pairs easily with dark costumes. If you are weighing up styles and fit, our guide on how to choose a kids' winter hat explains the differences.

Make sure any hat, mask or hood leaves your child able to see clearly on both sides and hear traffic.

Gloves

Children need their hands to carry a bag or bucket and pick sweets, so gloves should be thin enough to grip but still warm. Black gloves suit most spooky costumes, and white gloves work for skeletons, mummies and magicians. Pack a spare pair in your pocket, because at least one glove tends to go missing.

Socks and shoes

Cold creeps up from the pavement while children stand at doors. Pull thick socks over leggings or tights, and choose comfortable shoes or boots with good grip, as leaves and wet paving can be slippery. New costume shoes and boots often rub, so if they are not broken in, let your child walk in trainers or wellies and carry the costume shoes for photos.

What to do if it rains

Rain is common at the end of October, and wet clothes make children cold very quickly. A few simple steps help:

• Check the forecast on the afternoon itself, not the night before, as evening forecasts are more reliable a few hours out.
• Choose wellies or waterproof boots for the walk.
• Use a clear rain poncho or a waterproof cape over the costume rather than an umbrella, which is awkward for children and takes up a hand.
• If clothes get soaked through, head home and change. Wet layers stop insulating, and it is hard to warm up again outdoors.

Plan a shorter, warmer route

A child who is warm at the tenth house enjoys the evening far more than one shivering at the fourth. Planning helps as much as clothing does.

• Go out early. The start of the evening is usually the least cold part of the night, and it suits younger children.
• Agree a finish time before you leave. It makes heading home easier.
• Do quick checks. At each corner, feel your child's hands and ask how they feel. Red, numb or very cold hands are a sign to go home.
• Plan a warm-up stop. A loop that passes your own home, or a friend's, gives everyone a break halfway round.
• Have a warm drink ready. A flask for the walk back, or something waiting at home, warms everyone up before the sweets are sorted.

Don't forget the adults

The grown-up walking the route spends a couple of hours standing and strolling slowly, which is exactly how people get cold. Dress as you would for a long, slow evening walk: warm layers, a hooded waterproof coat, a hat, warm socks and boots with grip. Gloves that work with a touch screen are handy if you are using your phone as a torch or taking photos. If you are going straight on to a bonfire or fireworks event the following week, our guide on what to wear to Bonfire Night covers outfits for standing out in the cold for longer.

Costume safety in the cold and dark

A few safety points go hand in hand with keeping warm:

• Keep away from flames. Many fancy dress costumes are classed as toys rather than clothing and can catch fire easily. Fire services advise checking for a UKCA or CE mark when buying, keeping costumes well away from candles in pumpkins, and using LED candles at home. Merseyside Fire & Rescue Service's Halloween advice is a useful checklist. Ordinary clothes such as leggings, tights or jeans worn under a costume also mean there is a layer between the costume and the skin.
• Be seen. Dark costumes are hard for drivers to spot. Add reflective strips, a glow stick or a small torch.
• Stay with your child. Younger children should always have an adult with them, and older children are safer in a group with an agreed route and time to be home.

Frequently asked questions

What should kids wear under a Halloween costume?

A thin, close-fitting long-sleeved top with leggings, thermals or thick tights, plus warm socks. Choose colours that blend with the costume, and add a thin fleece on top of the base layer only if the costume still fits and fastens comfortably.

Should my child wear a coat over their costume?

On a mild, dry evening, warm layers underneath plus a hat and gloves are usually enough. On a cold or wet night, a coat is the better choice. A good compromise is to carry the coat and put it on for longer walks, taking it off for doorsteps and photos.

How long should kids stay out trick or treating in the cold?

There is no fixed rule, but shorter is better on a cold night. Agree a finish time before you go out, check your child's hands regularly, and head home if they are wet, shivering or say they are cold.

How do I keep my child's feet warm while trick or treating?

Thick socks over leggings or tights, comfortable shoes or boots with good grip, and waterproof footwear if the pavements are wet. Pack a spare pair of socks in case their feet get damp.

A warm night out is a better night out

The simplest way to keep kids warm trick or treating is thin layers under the costume, a hat and gloves that suit the character, sensible footwear and a short route with a clear finish time. Get those right and the costume can stay on show all evening. If you are putting together cold-weather basics for Halloween and the months ahead, you can browse our winter collection for hats, gloves and socks.