Sunbathing while nude isn’t directly against the law in Washington state. Bettina Hansen MCT file photo When the sun’s out in Washington state, people are out and about too. Although most folks prefer to recreate in tank tops, T-shirts, shorts and swimsuits, others choose to bare it all. What happens if you spot your neighbor in their backyard in their birthday suit? Are you allowed to call the cops? Here’s what Washington state law says: Is being naked illegal in Washington state?