Denmark, Iowa is a small town located in southeastern Iowa. The climate in Denmark is typical of the Midwest, with four distinct seasons and average temperatures ranging from the low 20s in the winter to the high 80s in the summer. The area is also prone to tornadoes and severe thunderstorms.

The hydrology constituents in Denmark are primarily influenced by the nearby Skunk River, which runs through the town. The river provides opportunities for fishing, kayaking, and other recreational activities.

Outdoor recreation opportunities in the area include hiking and biking on nearby trails, camping, and exploring the local parks. The Oakland Mills Nature Center is also a popular destination for wildlife viewing and educational programs.