Can I wear jeans if it's a casual evening?

Avoid it. Denim is incredibly heavy and does not breathe. If you want a similar look, opt for linen-blend trousers which provide the same silhouette without the heat retention.

How do I deal with tropical rain?

Don't bother with heavy rain jackets. They function like saunas. Use a lightweight, packable poncho or simply embrace that you will get wet and carry a quick-dry towel.

Staying comfortable in tropical heat and humidity

Prioritize loose-fitting, natural fibers like linen and merino wool that wick moisture away from your skin. Avoid synthetic fabrics like polyester, which trap heat and sweat against your body, and pack a light, breathable long-sleeve layer for aggressive air conditioning.

Select the right fabrics. Stick to 100% linen, bamboo, or light-weight merino wool. These materials allow air to circulate and help your sweat evaporate, which is the only way to stay cool in 80%+ humidity.
Master the loose fit. Tight clothing is your enemy in the tropics. Choose cuts that sit away from the body to create a chimney effect for airflow. Avoid denim, as it is heavy, retains heat, and takes days to dry if you get caught in a downpour.
Prepare for the AC shock. Public transport, malls, and restaurants in tropical regions often blast air conditioning to sub-70°F (21°C) temperatures. Always carry a lightweight, long-sleeved button-down or a linen cardigan in your day bag.
Manage your footwear. Pack sandals with good arch support for walking, but include one pair of lightweight, breathable sneakers for long days on concrete. Avoid leather-lined shoes, as they will trap moisture and cause blisters quickly.

Can I wear jeans if it's a casual evening?: Avoid it. Denim is incredibly heavy and does not breathe. If you want a similar look, opt for linen-blend trousers which provide the same silhouette without the heat retention.
How do I deal with tropical rain?: Don't bother with heavy rain jackets. They function like saunas. Use a lightweight, packable poncho or simply embrace that you will get wet and carry a quick-dry towel.