In fact, some studies have shown that you may be more likely to get a sunburn on a cloudy day than on a sunny day. This is because people tend to spend more time outdoors on cloudy days, and they may not realize that they are still exposed to UV rays.
To protect yourself from sunburn, it's important to wear sunscreen every day, even on cloudy days. You should also wear sunglasses and a hat to help protect your skin from the sun's UV rays.