Yes, tents can be waterproof. It's just a matter of finding the right tent with the right features. Some tents are designed to be more water-resistant than others, and the level of waterproofing can vary greatly depending on the brand and model. One way to determine a tent's level of waterproofing is by looking at its hydrostatic head rating. This rating measures the amount of water pressure a tent can withstand before water starts to leak through. The higher the rating, the more waterproof the tent is. Look for a tent with a hydrostatic head rating of at least 2000mm, this will ensure that you'll stay dry even in heavy rain. Tents made with a polyester or nylon flysheet and a groundsheet with a sewn-in bathtub design that stops rain, mud, and bugs from getting in. It's also worth checking for features like sealed seams, which help to keep water from seeping through the fabric. And, most importantly, make sure to choose a tent with a good ventilation system. This will help to keep the inside of the tent dry by preventing condensation from building up.