Your catheters are best kept dry and at room temperature. However, most catheters will not get harmed by being stored at temperatures below 32°F (0°C) and up to 140°F (60°C) for up to 24 hours. You would normally not need to worry about catheters, stored in your suitcase in the aircraft hold. However, always check with the supplier if you’re going somewhere with extreme temperatures. Make sure your catheters are more or less room temperature before you use them. If they are too cold, place them close to your body for a while before use.
These are general guidelines meant to help you with typical questions. You should follow the specific instructions provided by your healthcare provider and the intermittent catheterization solution you are using.