Summer Lake is a small unincorporated community in Lake County, Oregon. It is located in the high desert region of the state, offering a semi-arid climate. Summers are generally dry and hot, with temperatures often surpassing 90°F (32°C) during the day and cooling off at night. Winters are cooler, with temperatures dipping below freezing and occasional snowfall.

The community is named after the nearby Summer Lake, an endorheic basin and playa. The lake is mostly shallow and only fills up during wetter years. Hydrology constituents in the area include the Ana River, which flows into Summer Lake, and numerous natural springs.

Outdoor recreation opportunities in the Summer Lake area are abundant. The lake itself attracts visitors for fishing, paddleboarding, kayaking, and birdwatching, especially during the bird migration season when thousands of waterfowl stop by. The surrounding vast landscapes offer opportunities for hiking, camping, hunting, and off-roading. Nearby attractions include the Fremont National Forest and the Hart Mountain National Antelope Refuge, where visitors can explore diverse ecosystems and observe wildlife such as pronghorn antelope and bighorn sheep.