USA Packing List: What to Bring for Every Season and Region

Packing for the USA is complicated by the country’s size. Temperatures in Phoenix in July average 40°C (104°F) while Anchorage is averaging 18°C (64°F) on the same day. A two-week trip that starts in New York and ends in Miami means four distinct climate zones and several dress codes. This guide breaks down what to pack by season, by region, and by trip type.

Documents and Money

Never pack these in checked luggage. Keep originals in your carry-on and photos backed up to cloud storage.

Passport (valid for at least 6 months beyond your return date)
ESTA approval printout or B-2 visa copy
Travel insurance certificate and 24-hour emergency contact number
International driving permit if you plan to rent a car (not required in most states but useful)
Copies of hotel reservations and any ticketed attraction bookings
Emergency cash: $100–200 in mixed small bills ($1, $5, $20) for tips, parking, and cash-only vendors

Download the Google Maps app and save offline maps before you leave — roaming data is never guaranteed, especially in national parks and rural areas.

Power Adapters

The USA uses Type A and Type B plugs (two flat pins / two flat pins plus a round earth pin) at 120V/60Hz. Most modern laptops, phone chargers, and cameras handle 100–240V automatically — check the label on your charger, which will say “Input: 100-240V” if compatible.

If your device is 240V only (rare in consumer electronics but possible with some hair appliances), you need a voltage converter, not just an adapter. Hair straighteners and travel kettles frequently have this problem.

Recommended: BESTEK Universal Travel Adapter (~$25, covers US, UK, EU, AU plugs) or a simple US adapter from your home country.

Tech Essentials

Unlocked smartphone — US carriers use GSM and 5G; check your phone is unlocked before travel
Portable power bank (20,000mAh for multi-day trips away from power) — Anker PowerCore 20100 is a reliable choice at around $45
Universal USB-C cable — most US hotels charge USB-A and USB-C; bring both cable types
Offline maps downloaded to phone before departure
Noise-cancelling earbuds for long domestic flights

Health and Pharmacy

US pharmacies (CVS, Walgreens, Rite Aid) stock most over-the-counter medications, but brand names differ from European equivalents — paracetamol is sold as acetaminophen (Tylenol), ibuprofen as Advil or Motrin, antihistamines as Benadryl or Claritin. Prices are higher than in the UK or Europe for most items.

Pack from home:

Any prescription medications in original packaging with the prescription label
A letter from your doctor for controlled substances or injectable medications
Basic first aid: plasters (Band-Aids), antiseptic wipes, blister pads (essential for city walking)
Sunscreen SPF 50+ — US sunscreen tends to be chemical-formula heavy; if you prefer mineral SPF, bring your own
Insect repellent (DEET 20–30%) if visiting Florida, Louisiana, or any tropical zone
Motion sickness tablets if you plan long road trips or boat tours

Summer Packing (June–August)

East Coast (New York, Boston, Washington DC): Hot and humid, averaging 28–34°C (82–93°F). Humidity makes it feel warmer. Pack lightweight breathable fabrics — linen, cotton, moisture-wicking synthetics. Layers are still needed for air-conditioned interiors: US restaurants, malls, and offices often blast air conditioning to near-freezing temperatures. A light cardigan or packable layer is essential.

Southwest (Phoenix, Las Vegas, Death Valley): Dry desert heat; temperatures regularly reach 40–48°C (104–118°F) in July. Wear lightweight long sleeves and a wide-brim hat to protect from UV as much as from heat — exposed skin burns within 20 minutes in direct desert sun. Closed-toe shoes for walking on hot pavement. Pack double your usual water intake for hiking days.

Florida and the Gulf Coast: Subtropical; expect afternoon thunderstorms from June through September. A packable rain jacket or compact umbrella is worth carrying. Humidity is relentless. Quick-dry swimwear and reef-safe sunscreen (required in some Florida marine parks) belong on the packing list.

Pacific Northwest (Seattle, Portland): Warm and relatively dry in summer (20–28°C / 68–82°F), with little rain June through August. This is the easy season — light layers, one waterproof layer for the occasional shower.

Hawaii: Year-round warmth at 27–32°C (80–90°F). Standard beach and outdoor clothing applies. Reef-safe sunscreen is legally required in Hawaii — avobenzone and zinc oxide formulas are compliant; oxybenzone and octinoxate are banned. Reef-safe SPF50 from brands like Raw Elements or Thinksport (~$18–22) is available locally but often sold out near popular dive sites.

Winter Packing (December–February)

Northeast and Midwest (New York, Chicago, Boston): Genuine winter. New York averages -1 to 4°C (30–40°F) in January; Chicago averages -8 to -2°C (18–28°F) with wind chill that pushes the felt temperature well below -15°C. Pack:

Insulated down or synthetic-fill coat (Canada Goose, Moncler, or The North Face rated to at least -10°C)
Thermal base layers (Merino wool is warmest-to-weight)
Waterproof insulated boots — Sorel Caribou or UGG Classic are popular choices; ice-grip soles are worth it in Chicago and Boston
Warm hat, gloves, and a scarf
USB heated gloves or hand warmers for very cold days

Southeast (Miami, Atlanta, New Orleans): Mild winters, 15–22°C (59–72°F), with occasional cooler evenings. Light layers are sufficient; a medium-weight jacket handles all but the coldest nights.

Mountain West (Denver, Salt Lake City, Jackson Hole): Cold and snowy. If skiing or snowboarding, rent equipment locally rather than flying with it unless you are particular about your own gear. Mountain resorts stock rentals — Ski Butlers delivers to your accommodation in most major ski towns.

Shoulder Season (March–May, September–November)

The most variable time of year, especially in the Northeast and Midwest. Pack layers rather than heavy single items: a base layer, a mid-layer fleece, and a waterproof outer shell is more versatile than one thick coat. Mornings can be 8°C (46°F) in New York in April while afternoons reach 20°C (68°F).

Footwear

The USA involves a lot of walking, especially in cities. Bring:

One pair of comfortable walking shoes (Nike, Adidas, New Balance, Allbirds — break them in before the trip)
One pair of smart-casual shoes or boots for evenings out (many nicer restaurants and bars enforce “no athletic wear” door policies)
Sandals or flip-flops if visiting beach destinations

For hiking in national parks, trail runners (Salomon, Hoka, Merrell) handle most day hikes; full hiking boots are worth it for rocky terrain in Zion, Grand Canyon, or Rocky Mountain NP.

Clothing Volume

The USA has coin-operated laundry in virtually every hotel, hostel, and Airbnb complex — plan to do laundry once per week on longer trips rather than overpacking. A 7-night trip rarely needs more than:

5–6 T-shirts or tops
2–3 long-sleeve shirts or blouses
2 pairs of trousers/jeans
1 smart-casual outfit for evenings
7 pairs of underwear
5–6 pairs of socks
Swimwear if relevant

For national park and outdoor trips, technical fabrics (Columbia, Patagonia, Arc’teryx) that dry quickly and resist odour are more practical than cotton for multi-day wear.

What Not to Bring

Hair dryer — every US hotel room has one built in; check-in desks also usually lend one
Excessive cash — the USA is almost entirely card-based; $100–200 in cash covers most cash-only scenarios
Heavy guidebooks — download offline digital guides (Lonely Planet, Fodor’s apps) instead