What to Pack for Southeast Asia: The List That Actually Works

The single most important packing principle

Pack for the heat and the temples. Everything else is secondary. That means: light fabrics, a layer you can add for cold air-conditioned transport (overnight buses in Southeast Asia are freezing), and something to cover your shoulders and knees at religious sites. You can buy almost anything you forget once you arrive — Southeast Asian markets and pharmacies are excellent.

What I actually bring

Clothing: 3–4 t-shirts, 2 pairs lightweight trousers (linen or technical fabric that dries fast), 1 pair shorts, 1 long-sleeve light shirt for temples and cool transport, sandals and one pair of walking shoes, underwear for 5 days (laundry is cheap everywhere).

Technology: phone (eSIM is easier than SIM cards for multi-country travel — Airalo covers most of Southeast Asia on one plan), power bank, universal adapter, headphones for overnight transport. — book a Yesim eSIM in advance for the best price.

Health: anti-diarrhoea tablets (Imodium, for when you need to get on a bus), rehydration salts, antihistamines, strong SPF sunscreen (expensive or unavailable in some areas), prescription medications with copies of prescriptions.

What to leave behind

Heavy boots (sandals handle most of what travelers actually walk on). More than one week of clothing (laundry services everywhere, IDR 15,000–30,000/kg). Guidebooks (apps and offline Google Maps cover this). Lots of cash (ATMs everywhere, though fees add up — consider a travel card with low foreign transaction fees).