Marijuana in Hawaii is legal from mid of 2015 which includes a lot of restrictions. And it is legal only if you have a medical condition and in such cases you can get it legally else Once you start roaming around, you shall be approached by the local who will whisper to you and definitely it means that they are selling pot or if you find someone alone or a small group staring at you, the possibility is he/they are wondering if you want to buy.