Carrier bags can vary in terms of their waterproof properties based on the material they are made from. Some carrier bags, such as those made from plastic or certain types of coated paper, may offer a degree of water resistance, protecting the contents from light moisture or splashes.

However, it's important to note that most carrier bags are not completely waterproof and may not provide full protection against heavy rain or prolonged exposure to water.

If you require waterproof or water-resistant bags, it's advisable to look for specific bag types that are designed with waterproofing in mind, or consider using additional protective measures such as plastic liners or pouches for items that need to stay dry.