Seaman, Ohio is a small village located in Adams County, in the southwestern part of the state. The climate in Seaman is characterized as a humid subtropical climate, with hot summers and mild winters. Summers are generally warm and humid, with average temperatures ranging from the mid-70s to low 90s Fahrenheit. Winters are cooler, with average temperatures ranging from the mid-20s to low 40s.

Hydrologically, Seaman is situated in the Ohio River watershed, with the nearby Ohio Brush Creek flowing through the region. The area is known for its lush forests and rolling hills, providing a picturesque setting for outdoor activities. Outdoor enthusiasts can enjoy various recreational opportunities such as hiking, camping, and fishing in the nearby parks and forests. Adams Lake State Park, located just 20 minutes southwest of Seaman, offers opportunities for boating, swimming, and picnicking. Additionally, the Serpent Mound Historical Site, a prehistoric Native American effigy mound, is a popular attraction for visitors interested in archaeology and history. Seaman and its surrounding areas provide a peaceful retreat for nature lovers and those seeking outdoor adventures.