Louin, Mississippi, located in Jasper County, experiences a humid subtropical climate. Summers are hot and humid, with temperatures ranging from the mid-80s to mid-90s Fahrenheit. Winters are mild, with temperatures typically ranging from the 40s to 60s Fahrenheit. Precipitation is evenly distributed throughout the year, with an average annual rainfall of 55 inches. Louin is prone to occasional thunderstorms and the region can be affected by hurricanes during the Atlantic hurricane season.

The hydrology constituents in Louin include several small creeks and the nearby Tallahala Creek, which flows into the Chickasawhay River. These water bodies provide opportunities for fishing, canoeing, and kayaking. Anglers can expect to find species such as bass, catfish, and bream.

For outdoor enthusiasts, Louin offers various recreational opportunities. The nearby Tallahala Wildlife Management Area provides opportunities for hunting, hiking, and wildlife viewing. The area is home to deer, turkey, squirrels, and waterfowl. Additionally, the area features the Tallahala Creek, providing opportunities for fishing and canoeing. Louin also has several parks with picnic areas and playgrounds, making it a great destination for families. With its pleasant climate and diverse outdoor recreation opportunities, Louin, Mississippi, is an excellent place for nature lovers and those seeking outdoor adventures.