The Straw Hat is a HatItem found in the Dress Tab. It costs 12 Cut Grass to craft. It is required to construct the Miner Hat and the Bush Hat. In the base game, it has no functionality when worn.
Downloadable Content
In DLCs the Straw Hat does not require a Science Machine to prototype. It provides small protection from Wetness and 60 points of protection from Overheating, and loses Durability when worn. The Sewing Kit repairs 100% of its durability.
With the Seasonal Starting Items default preset, the Straw Hat will be given to any players joining a world for the first time, during Spring.
The simple combination of using the Straw Hat and the Umbrella is enough to prevent the player from getting wet during rain, being an easy and accessible way out for the Wetness problem as the Straw Hat has a low cost based solely on Cut Grass.
In the Reign of Giants DLC, the Straw Hat is also one of the ingredients required to craft a Rain Hat.
The Straw Hat used to cost 30 Science Points to craft and had a value of 10 Science Points when used on a Science Machine in the research days of Don't Starve.