Should I bring a light jacket?

Yes. While the outside is scorching, indoor malls, cinemas, and buses in places like Bangkok or Singapore blast the air conditioning. A thin linen or cotton button-down shirt is perfect for these transitions.

Can I just buy clothes when I get there?

Yes, and you should. Local markets offer cheap, loose-fitting trousers and shirts made specifically for the humidity, which are often better than expensive Western 'travel' gear.

Staying Cool and Dry in Southeast Asia

Prioritize loose-fitting, natural fibers like linen or moisture-wicking synthetic blends to manage high humidity and sweat. Carry a light, breathable rain shell for sudden downpours and ensure your clothing covers shoulders and knees to remain respectful at temples.

Select the right fabrics. Avoid heavy cotton and denim, which soak up moisture and take days to dry. Pack 100% linen, bamboo, or high-quality technical polyester "dri-fit" fabrics that allow air to circulate and sweat to evaporate.
Plan for temple dress codes. Many sites in Thailand, Cambodia, and Indonesia require shoulders and knees to be covered. Pack a lightweight sarong or a pair of thin, loose-fitting 'elephant' pants that you can easily pull over your shorts when entering religious sites.
Manage the humidity. Bring at least two sets of clothing per day if you are doing heavy walking. You will get damp simply by existing; changing into dry, clean clothes in the evening prevents skin irritation and heat rash.
Prepare for the rain. Don't bother with heavy raincoats, as you will sweat through them immediately. Instead, pack a lightweight, packable poncho or a highly breathable windbreaker that can withstand a 30-minute tropical deluge.

Should I bring a light jacket?: Yes. While the outside is scorching, indoor malls, cinemas, and buses in places like Bangkok or Singapore blast the air conditioning. A thin linen or cotton button-down shirt is perfect for these transitions.
Can I just buy clothes when I get there?: Yes, and you should. Local markets offer cheap, loose-fitting trousers and shirts made specifically for the humidity, which are often better than expensive Western 'travel' gear.