Hinata has a cheerful and energetic personality. He is easily excited and can be quite loud, a trait second only to Nishinoya and Tanaka. For the most part, Hinata is very simpleminded which sometimes causes him to make rash decisions. However, he is also shown to be quite observant. He is capable of reading social cues and can be incredibly empathetic toward others' struggles. As such, he often says just what others need to hear to push themselves in the right direction. He is also noted to be a natural schmoozer, a quality that his teammates occasionally use to win someone over such as when Nishinoya agreed to help with Hinata's receives after being flattered by the first-year. His friendly and straightforward personality allows him to befriend even the quietest of people effortlessly, such as Kenma from Nekoma High and Aone from Date Tech High.

However, despite his generally bubbly exterior, Hinata is also shown to have a serious attitude, particularly when it comes to volleyball. His intense love for the sport is demonstrated through his impressive display of tenacity stemming from his constant desire to improve his abilities. As stated by Sugawara, Hinata plays with great fortitude in the face of adversity and thus doesn't give up easily during a match.[7] Hinata can also exhibit a very intimidating expression when people underestimate him or speak poorly of his team. Still, Hinata gets scared easily, especially by larger and stronger opponents. This prompts him to develop the habit of hiding behind his nearest teammate. However, he recovers quickly before confidently challenging their opponents.