Short answer: four clothing layers, a soft bag under 60 litres, a serious power bank, a head torch, and sunscreen. Everything else is refinement.
Most Mongolia packing lists run to fifty or sixty items, which is a recipe for skimming and forgetting the four things that matter. This one is twenty-three, and every single item is here because Mongolia specifically creates the problem it solves.
Four Layers, Thirty Degrees
Here is the thing that catches everyone out: a July day on the steppe can start close to freezing and hit the high twenties by afternoon. You are not packing for a temperature. You are packing for a range of thirty degrees inside a single day.
Four pieces cover all of it.
Base layer — merino or synthetic, long sleeve, two of them on rotation. Its job is moving sweat off your skin so you don't get cold the moment you stop moving.
Mid layer — a fleece or light wool jumper. This is the one you put on and take off ten times a day, so make it easy to stuff into a daypack.
Insulation — a packable down or synthetic puffy. Compresses to nothing, weighs nothing, and is the thing that saves you at 4am in a ger after the stove has gone out. Which it will.
Shell — waterproof, and more importantly genuinely windproof, with a hood. On open steppe the wind is what ruins a day, not the rain.
The One Material to Leave Behind
Cotton. It holds sweat, dries slowly, and stops insulating the moment it's damp. A cotton t-shirt that gets wet at 8am in June is still wet and still cold at 4pm.
This applies to socks and underwear too, which is where most people forget.
What Changes With the Season
The four-layer system doesn't change across the year. What changes is the weight of each layer and four or five specific additions.
Summer (June–August) still needs the puffy. Every visitor who skips it regrets it on the first cold morning.
Shoulder season (May, September, October) is the easiest to pack for — the range is narrower and nothing is extreme.
Winter (November–April) needs a genuine parka rated well below −20°C, insulated boots bought a size up to fit thick socks, and a hat that covers your ears. Our weather guide has the actual monthly figures if you're deciding between dates.
The rule underneath all of it: there is no good-weather season and bad-weather season here. There's only a range. Hail in July is normal. So is +28°C in the Gobi the same week.
The Twenty-Three
Clothing (1–8)
1. Two base layers. Merino or synthetic.
2. Fleece or wool mid layer.
3. Packable insulated jacket.
4. Windproof waterproof shell. Trousers too if you can manage the space.
5. Quick-dry trousers, two pairs. Laundry is not a daily option outside the city, and jeans take two days to dry.
6. Broken-in walking boots. Break them in at home. Nobody has ever enjoyed discovering a hotspot on day two in Terelj.
7. Sandals or flip-flops. Shower blocks, river crossings, and not putting boots back on to cross a ger camp at night.
8. A sun hat and a warm hat. You will need both on the same day, more than once.
Gear (9–16)
9. A soft duffel or backpack, 60 litres or under. This is the one most people get wrong. A roller suitcase does not fit in a Russian van or a Land Cruiser boot alongside four other people's luggage, and wheels are useless on grass, gravel and ger thresholds. Soft-sided, and smaller than feels comfortable.
10. A high-capacity power bank. Ger camps run on limited solar and ration the charging windows. A 20,000 mAh bank is the difference between a working phone and a brick on day three.
11. A head torch. Every night trip to the toilet, in every season. Hands-free matters when you're negotiating a pit latrine in the dark.
12. A water filter or purification tablets. Cheaper and considerably lighter than carrying a week of bottled water, and it works everywhere.
13. Proper sunglasses. High altitude, no shade for hundreds of kilometres, and snow glare in winter.
14. A quick-dry towel. Ger camps supply little and homestays supply none.
15. Earplugs and an eye mask. Gers are shared, and in June it's light by four in the morning.
16. A sleeping bag liner. Adds real warmth, packs to nothing, and solves any bedding you'd rather not examine closely.
Health, Tech and Paper (17–23)
17. All your prescriptions. The full trip's supply plus a week, in original packaging. Pharmacies here stock a good range but brand names differ and specific medications may be unavailable — the pharmacy directory covers what's in the capital.
18. High-factor sunscreen and lip balm. Altitude, dry air and no shade. It burns faster than people expect, and the dryness will destroy your lips within days.
19. Rehydration salts and stomach remedies. The most common traveller complaint, and the most easily fixed.
20. Offline maps on two devices. Coverage follows population, and most of the country has none. Two devices because one will be flat.
21. Printed copies of everything. Passport, visa, insurance policy, emergency numbers. Paper works when your phone doesn't.
22. A universal adapter. Mongolia uses type C and E sockets at 220V.
23. Small gifts for host families. Sweets, school supplies, a good torch. Never alcohol, never cash — our guide to what to bring when visiting a ger explains why.
Buy It There, or Leave It Home
Buy in Ulaanbaatar
Winter outerwear. A parka bought here is cheaper, warmer and designed for −30°C. A city coat from London or New York is not, and this is the single most common cold-weather mistake. The malls and department stores carry everything.
Cashmere. Mongolia produces some of the world's finest, at a fraction of what it costs elsewhere. Buying it here is the point.
Water, snacks and supplies. Stock up in the capital before heading out. Provincial shops carry a fraction of the range.
A local SIM card. Cheap, fast, and the best-value purchase of the whole trip. Get one at the airport or a downtown shop on day one.
Basic toiletries. Supermarkets carry familiar brands. No need to fly shampoo across a continent.
Leave at Home
A roller suitcase. See item 9.
Anything cotton.
Jewellery and valuables. Nothing to do with crime — there's simply nowhere to keep them and nothing to wear them to.
Hair dryers and anything high-draw. Ger camps often have neither the power nor the socket.
More than one pair of shorts. You'll wear trousers almost every day, including in July.
If You're Riding
Two details that are genuinely about safety rather than comfort.
Avoid noisy waterproofs. Crackling hard-shell fabric unsettles semi-wild horses, and a Mongolian horse is not a riding-school pony. Soft-shell is the safer choice.
Wear flat-soled boots without a deep tread. A heel or aggressive lugs can catch in the stirrup, and being dragged is the injury that actually happens on horse trips. This applies to anyone doing a horse trek in Arkhangai, the Orkhon Valley or around Khuvsgul.
Riding gear is usually arranged through your operator — book through a verified local operator and ask what they supply before buying anything.
What Nobody Warns You About
The dryness. Humidity stays low year-round. Lip balm, moisturiser, and drinking considerably more water than feels necessary. Contact lens wearers should bring extra solution and consider glasses for the dusty days.
The sun at altitude. Ulaanbaatar sits around 1,300 m and most of the country is higher. Combined with open sky and no shade, it burns faster than the temperature suggests.
Charging windows are short. Plan your day around them rather than assuming a socket will appear.
Laundry happens roughly weekly, in the city or a provincial town. Pack for that rhythm, not for daily washing.
The Bag Itself
Sixty litres or under, soft-sided, plus a small daypack for the vehicle.
Everything you own will live in the back of a van or a Land Cruiser alongside four other people's luggage, spare fuel and a box of food. Space is genuinely finite, and a bag that squashes is worth more than a bag that protects.
Pack it, then take out a fifth of it. That fifth was the part you weren't going to wear.
Frequently Asked Questions
What should I pack for Mongolia?
Four clothing layers — base, mid, insulation and shell — plus a soft bag under 60 litres, a high-capacity power bank, a head torch, sunglasses and high-factor sunscreen. Everything else is refinement.
Do I need a warm jacket in summer?
Yes. A packable insulated jacket is essential even in July, because mornings and nights drop close to freezing and ger stoves go out overnight.
What size bag should I bring to Mongolia?
Sixty litres or under, soft-sided. Roller suitcases do not fit in countryside vehicles and their wheels are useless on the surfaces you'll actually cross.
Can I buy outdoor gear in Ulaanbaatar?
Yes, and for winter outerwear you should. Locally bought parkas are cheaper, warmer and built for −30°C. Cashmere is also worth buying here rather than importing.
What should I not bring to Mongolia?
A roller suitcase, anything cotton, jewellery, hair dryers and other high-draw electronics, and more than one pair of shorts.
Do I need a sleeping bag for ger camps?
Usually not — tourist ger camps provide bedding. A sleeping bag liner is lighter, adds warmth, and covers homestays where bedding is more basic.
What do I need for a horse trek in Mongolia?
Flat-soled boots without deep tread, so your foot slides free of the stirrup, and soft-shell rather than crackly waterproofs, which unsettle the horses. Most operators supply the rest.
Is there electricity in the Mongolian countryside?
Limited. Ger camps typically run on solar with restricted charging windows, and some homestays have none. A high-capacity power bank is essential rather than optional.
What toiletries should I bring to Mongolia?
High-factor sunscreen, lip balm and moisturiser — the altitude and dry air make all three necessary. Everything else is available in Ulaanbaatar supermarkets.
Do I need mosquito repellent in Mongolia?
In the northern forests and around Lake Khuvsgul in summer, yes. Elsewhere it's rarely needed.