There is a particular magic to an autumn picnic. The air is crisp, the leaves are turning, and the crowds have gone. But to enjoy it properly, you need more than a hamper and a sunny disposition. A cosy outdoor picnic is about building a small, warm haven against the chill. Here is how to do it well.

Choose a sheltered spot with care

Wind is the enemy of a cool-weather picnic. Even a gentle breeze can make a ten-degree afternoon feel like five. Look for a spot behind a hedge, a dry stone wall, or a dense stand of trees. A south-facing slope catches the low autumn sun and holds its warmth far better than a shaded hollow. Avoid exposed hilltops and open fields, no matter how lovely the view. If you are walking, plan your picnic for early afternoon when the sun is at its highest. Check the ground before you settle: dry grass, a fallen log, or a wooden bench is ideal. If the earth is damp, lay down a waterproof groundsheet first. A bench in a sun trap, with a wall at your back, is worth more than a picturesque spot that leaves you shivering.

Layer your clothing – and your seating

Dress as if for a walk, not a summer picnic. Start with a warm base layer, add a fleece or wool jumper, and finish with a windproof and water-resistant outer layer. A hat, gloves, and a scarf are not optional extras; they are the difference between lingering over lunch and packing up after ten minutes. But also think about what you sit on. A thin cotton picnic blanket will not cut it. The cold comes up from the ground and seeps through quickly. Use a foam mat, a folded wool blanket, or an insulated picnic rug. Add a cushion or a small inflatable pad for extra comfort. Keep a spare dry layer in your rucksack or car. Warm feet matter too: wool socks and sturdy boots are far better than fashion trainers. If you tend to feel the cold, a pair of fingerless gloves lets you eat without exposing your hands.

The flask is non-negotiable

A vacuum flask of hot soup, stew, or tea transforms the experience. It is the single most important piece of kit for an autumn picnic. To get the most from it, preheat the flask with boiling water for five minutes, then empty it and fill with your hot liquid. For soup, choose something thick and hearty – lentil, squash, or a chunky vegetable broth. For drinks, hot chocolate, mulled apple juice, or strong tea all work beautifully. Take enamel mugs or insulated cups, not delicate china. A small flask of hot water for washing sticky hands is a lovely touch. If you have a portable stove, you can brew fresh, but a flask is simpler, safer, and works even when the wind picks up. Wrap the flask in a tea towel to keep it warm for longer, and carry it in the centre of your bag so it does not cool down too fast.

Pack food that thrives in cool air

Autumn food is rich and comforting, and it should be robust enough to handle a few hours outdoors. Think pork pie, sausage rolls, chunks of mature cheddar, crusty bread, and a jar of chutney. A flask of soup with a hunk of bread is a full meal. Add apples, pears, and a slice of ginger cake. Avoid delicate salads and mayonnaise-heavy fillings that do not like the cold. If the day is mild, keep food in a cool bag with an ice pack; if it is cold, an insulated container for hot items is more useful. Do not leave food out for more than an hour or two. A small list of reliable options includes:

• A flask of thick soup or stew
• Crusty bread or rolls, wrapped in a cloth
• Cheese, chutney, and oatcakes
• Pork pie or sausage rolls
• Apples, pears, and dried fruit
• Ginger cake or flapjack

Set up a nest in minutes

Arrive with a plan so you can settle quickly. Lay down your waterproof groundsheet first, then the wool blanket or rug on top. Arrange cushions against a tree, a log, or a wall. Put the flask in the centre, with mugs and bowls within easy reach. Have a small bin bag for rubbish and a cloth for spills. A folding stool or two makes a big difference for older knees or anyone who finds sitting on the ground uncomfortable. A windbreak can create a cosy corner if you are on open ground, and it takes only a minute to pitch. Keep everything you need close by so you do not have to get up and lose your warmth. The goal is a nest, not a spread – a place where you can sit back, sip something hot, and watch the leaves fall.

Small touches for a big difference

A few extras turn a good picnic into a great one. Hand warmers in your pockets are a quiet luxury. A small torch or lantern helps if you linger into the late afternoon. A spare pair of socks saved many a cold walk home. A piece of oilcloth under your blanket keeps damp at bay. A thermos of hot water for a second round of tea is always welcome. And a willingness to embrace the season: the smell of woodsmoke, the rustle of leaves, the low golden light through bare branches. Do not wait for a perfect day. A little drizzle can be lovely if you are properly dressed and sheltered. The best autumn picnics are not about ignoring the cold – they are about meeting it with good company, warm layers, and a flask that never runs dry.