Keeping Electronics Dry in Tropical Humidity

Protect your electronics from tropical humidity by using airtight dry bags and silica gel packets to prevent internal corrosion and lens fungus. Never leave devices in a non-air-conditioned room for extended periods, as the constant temperature swings will cause condensation.

  1. Pack moisture-absorbing silica gel. Purchase a pack of 50-gram rechargeable silica gel canisters. Toss two of them into every sealed bag or camera case you use to pull moisture out of the air inside.
  2. Use heavy-duty dry bags. Avoid thin ziploc bags that puncture easily. Invest in 5L or 10L roll-top dry bags. These create an airtight seal that protects gear from both sudden monsoon downpours and the ambient humidity that causes internal fogging.
  3. Manage temperature shock. When moving from a freezing air-conditioned hotel room to the 30°C (86°F) outdoor humidity, your camera lens will fog up instantly. Keep your camera inside your bag for 20 minutes after stepping outside to let the gear slowly acclimate to the ambient temperature.
  4. Daily maintenance. Wipe down all cables and device ports with a dry microfiber cloth every evening. Humidity creates a thin film of moisture that can accelerate port oxidation.
Should I bring a dehumidifier for my hotel room?
No. Most hotels in Southeast Asia have 'Dry Mode' on their AC units. Set the AC to 'Dry' or 'Dehumidify' mode while you are out for the day to keep the room humidity levels manageable.
Will my laptop screen get damaged by humidity?
In extreme cases, yes. The high humidity can cause screen delamination or keyboard issues. If you aren't using your laptop, store it in a dry bag with a silica packet.
How do I know if my gear is getting too damp?
If you see condensation inside your lens glass or notice a 'stickiness' on your rubber grips, your gear is absorbing too much moisture. Move it to a climate-controlled environment immediately.