Merrimac is a small village located in Sauk County, Wisconsin. Situated along the eastern shore of Lake Wisconsin, it offers a picturesque setting with access to natural beauty and outdoor recreation opportunities.

The climate in Merrimac is characterized by cold winters and warm summers. Average temperatures range from around 15°F (-9°C) in winter to 80°F (27°C) in summer. Precipitation is evenly distributed throughout the year, with an average annual rainfall of about 32 inches (81 cm).

Hydrology in the area is mainly influenced by Lake Wisconsin, a reservoir formed by the Wisconsin River. The lake provides opportunities for boating, fishing, and water sports. Anglers can find species such as walleye, northern pike, muskie, and bass.

Outdoor enthusiasts can also explore nearby natural areas, including Devil's Lake State Park, which offers hiking, camping, and rock climbing opportunities. The Ice Age National Scenic Trail passes through Merrimac, attracting hikers and nature lovers.

Overall, Merrimac provides a serene environment with a range of outdoor activities, making it an appealing destination for those seeking natural beauty and recreational pursuits.