Why container rain happens
Container rain happens when temperature swings cause trapped humidity to condense on container walls, ceilings, cargo covers, or cartons.
- High humidity at loading increases the risk.
- Long sea routes and cold-to-warm climate changes make condensation worse.
- Moist cargo, wooden pallets, and weak carton protection can add more vapor.
Use desiccant at the right protection level
Small sachets protect product packs. Container strips and higher-capacity formats help manage the air and surfaces around cargo inside the container.
- Use sachets inside cartons for direct product moisture protection.
- Use strips or hanging desiccants for container-level condensation control.
- Protect pallets and cartons from direct wall contact where possible.
Build a repeatable loading checklist
For exporters, moisture prevention should become a loading workflow, not a last-minute accessory.
- Check cargo dryness before loading.
- Use clean pallets, suitable liners, and desiccant placement records.
- Document product type, route, loading date, and desiccant format for claim defense.