01
Best overall pick
Lake Siskiyou Beach
Near Mount Shasta City • Family-Friendly Lakeside Beach • Best For Families
A managed swim beach with soft sand, clear water, and big Mount Shasta views just a short drive from town.
This is the spot locals suggest first when someone asks where to swim near Montague. There’s a roped-off swim area, seasonal water toys, and plenty of space to spread out on the sand or under the pines. Expect a small day-use fee, cooler water even in midsummer, and a relaxed campground vibe on busy weekends.
02
Scenic mountain escape
Castle Lake
Trinity Divide High Country • High-Elevation Alpine Shore • Best Cold-Water Dip
A deep, glassy alpine lake ringed by granite and firs, with pockets of shoreline where you can wade in and cool off.
Castle Lake feels a world away from the valley heat, with chilly, clear water and dramatic cliffs rising straight from the shoreline. The “beach” here is a mix of small clearings, rock slabs, and narrow gravel pockets, so bring a camp chair or pad instead of relying on sand. Come early on summer weekends for easier parking and a quieter swim before afternoon winds pick up.
03
Quiet forest hideaway
Kangaroo Lake Recreation Area
Klamath National Forest • Forest-Framed Swimming Cove • Best Secluded Escape
A compact mountain lake with a small swimming area and relaxed campground atmosphere tucked deep in the pines.
Kangaroo Lake is ideal if you like your beach time on the low-key side, with still water, loons calling, and kids paddling close to shore. The designated swim cove has easy access from the campground and day-use area, plus a few sunny patches where you can lay out a towel. Pack what you need, as services are minimal and the closest stores are back down the mountain.
04
Close-to-town option
Greenhorn Park Lake
Yreka City Park • Relaxed Park Lake Shoreline • Best Quick Afternoon Stop
A mellow in-town lake with grassy banks and small shoreline spots where families cool off after work or school.
If you don’t have time to head into the mountains, Greenhorn Park offers the easiest water access near Montague. The lake edge alternates between reeds, compacted dirt, and a few small beachy pockets where kids can splash while adults hang out at a nearby picnic table. Pair it with a loop on the walking trails or a playground visit to turn a simple swim into a full park outing.
05
Big-lake day trip
Bailey Cove Beach, Shasta Lake
Shasta Lake North Shore • Lakeside Swim Cove With Marina Nearby • Best All-Day Outing
A sheltered cove on Shasta Lake with a small swim beach, picnic tables, and access to boat traffic and big-reservoir views.
Bailey Cove makes sense when you want a full-blown lake day rather than a quick dip, with swimming, boating, and shady picnic spots all in one stop. The swim area is modest but pleasant, and you’re close to a marina if you decide to rent a boat or grab extra ice. It’s a longer drive from Montague, so most visitors pack a full cooler, arrive late morning, and stay through golden-hour light on the water.