Essential Packing Tips for Every Travel Season and Climate

Whether a trip runs through a tropical wet season or a sub-zero winter, the packing principles that travel guides and health authorities recommend repeat across climates: pack by layer and purpose rather than by outfit, match fabric to conditions, and plan carry-on liquids around airline and TSA limits before arriving at the airport.

Universal packing steps for any trip

1. Divide items by activity and day instead of using one packing cube per person for everything, as recommended in The Points Guy's carry-on packing guide.
2. Use packing cubes grouped by activity and day; The Points Guy notes many cubes are water-resistant, which helps keep clothes dry if there are spills while travelling.
3. Rolling shirts and trousers instead of folding can help fit more into a suitcase, though it may cause wrinkling in some fabrics, according to The Points Guy.
4. Wear the bulkiest coat, boots or sweater while travelling instead of packing them, a tip repeated by both The Points Guy and the winter packing guide from Tortuga Backpacks, since bulky items take up disproportionate suitcase space.
5. Keep liquids, gels and aerosols at 3.4 ounces (100 millilitres) or less per container, packed in a single quart-size clear bag, following the TSA rule as described on Delta Air Lines' carry-on baggage page.

Packing for hot and humid climates

The U.S. Centers for Disease Control and Prevention advises travellers heading to hot climates to wear loose, lightweight, light-coloured clothing, along with a hat and sunglasses. The agency recommends sunscreen with SPF 15 or higher, reapplied every two hours, and says travellers should drink plenty of non-alcoholic fluids, schedule outdoor activities for cooler parts of the day, and rest often while staying in the shade when outdoors. For anyone planning strenuous activity such as hiking in the heat, the CDC suggests acclimatising beforehand by exercising for about one hour a day in warm conditions.

On fabric choices, the travel guide Practical Wanderlust recommends merino wool and hemp for hot, humid trips because both regulate temperature and resist odour over multiple wears, alongside quick-drying synthetic shorts and pants. The guide also suggests reef-safe sunscreen made with non-nano zinc oxide, a wide-brimmed hat, and UPF-rated rash guards for water activities, along with a dry bag for wet swimwear or towels.

• Loose, light-coloured, breathable clothing (CDC)
• SPF 15+ sunscreen, reapplied every two hours, plus a hat and sunglasses (CDC)
• Merino wool or hemp tops for odour and temperature control (Practical Wanderlust)
• Quick-drying synthetic shorts or pants usable for multiple activities (Practical Wanderlust)
• A packable rain jacket, even for tropical climates with sudden showers (Practical Wanderlust)

Packing for cold weather

Tortuga Backpacks' winter packing guide describes a three-layer system: a lightweight base layer such as thermal underwear worn against the skin, a mid layer of t-shirts or fitted sweaters, and an insulating outer layer such as a down jacket. The guide recommends merino wool specifically for base layers, socks and sweaters for its temperature-regulating properties, and advises against heavy, bulky sweaters and leather-soled boots, which can slip on snow and ice. It also suggests packing only two pairs of trousers and compressing bulk with packing cubes, while wearing the heaviest coat and boots during travel rather than packing them.

• Lightweight merino wool base layer (Tortuga Backpacks)
• Mid-layer sweaters or long-sleeve tops (Tortuga Backpacks)
• An insulated down jacket as the outer layer (Tortuga Backpacks)
• Waterproof boots with rubber soles rather than leather soles (Tortuga Backpacks)
• A wool beanie and lightweight scarf for added warmth (Tortuga Backpacks)

Carry-on liquids: the TSA rule

For flights departing U.S. airports, Delta Air Lines' official baggage guidance states that liquids, gels, aerosols and pastes in carry-on bags must be limited to containers of 3.4 ounces (100 millilitres) or less, with all containers placed in a single quart-size, clear, zip-top plastic bag per passenger. The bag may need to be removed and placed in a bin during security screening. Delta's page notes that medication, breast milk and infant formula are generally given exceptions to the standard limit but may require separate screening.

Hot vs. cold climate packing at a glance