Openings · last 7 days
25
Booking reality
Campsite Sniper detected 25 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-234040
When Summit Lake South reopens
Summit Lake South's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
52
Openings · last 90 days
53
Weekday pattern
Detected openings by day of week · 90dThursday accounted for the largest share of the openings Campsite Sniper detected. 21 of 53 openings detected in the last 90 days occurred on a Thursday (39.6%), with Tuesday (8) and Monday (7) next in line.
Hour-of-day pattern
First detected by hour · local time · last 90 daysThe largest concentrations of detected openings were first detected during the 08:00 and 10:00 local-time hours. Those hours contained 20 of 53 detected openings (37.7%). Hours show when Campsite Sniper first detected each opening, in Pacific Time, not when the change was made upstream.
Lead-time profile
Days before stay date · percentilesHalf of the openings Campsite Sniper detected appeared at least 5 days before the stay date; the middle 50% land 3–6 days out. Set an alert if you want Campsite Sniper to monitor future openings.
Highest-churn sites
Most openings · 90d| Site | Openings | Share of all openings |
|---|---|---|
| D10 | 7 | 13.2% |
| E05 | 6 | 11.3% |
| D11 | 5 | 9.4% |
| C11 | 3 | 5.7% |
| E10 | 3 | 5.7% |
Site D10 had the most detected openings in the last 90 days: 7. One free watch covers every site here.
02 · Availability Outlook · Sep 18 – Sep 21, 2026 · of 45 monitored sites
Of the 180 tracked site-nights (Sep 18 – Sep 21, 2026): 55 open for online reservation · 125 reserved.
Where the open windows are
69.4% of tracked site-nights are not currently open for online reservation. 55 of 180 remain open; here is where they are.
Load status
Sep 18 – Sep 21, 2026Not open online69.4%
Open site-nights55 / 180
Reserved (of online inventory)125 / 180
Weekday openings32
Weekend openings23
Of the open site-nights on mapped sites, 32 fall on weekdays and 23 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Sep 2026September holds the most room. 55 of 180 site-nights are still open there.
Holiday windows
Sites open per night · of 45 sites| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open |
Labor Day: no online availability on any tracked night.
Best-availability sites
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| C01 | 2 |
| C02 | 2 |
| C03 | 2 |
| C11 | 2 |
| D01 | 2 |
The 5 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
Next windows
As of Sep 18, 2026 snapshotNext open dateSun · Sep 20
The next bookable night is Sep 20. Campsite Sniper can watch later dates for you.
Stays and site detail
55 open site-nights across 33 sites at Summit Lake South, from the same hourly snapshot as everything above.
Multi-night stays. 22 2-night opening where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 20 at site C01.
RV length. Longest recorded site here is 59 ft. 18 sites take 25 ft, 6 sites take 35 ft, 1 site takes 40 ft.
All 33 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| C01 | 20 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| C02 | 20 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| C03 | 35 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| C11 | 21 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D01 | 24 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D02 | 21 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D03 | 23 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D04 | 26 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D05 | 20 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D11 | 24 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| D14 | 35 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E02 | 59 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E05 | 26 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E06 | 24 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E07 | 21 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E08 | 26 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E09 | 21 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E10 | 35 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E13 | 25 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E14 | 29 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E21 | 24 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| E22 | 28 ft | None | 2 | 2 nights | Sep 20, Sep 21 |
| C04 | 35 ft | None | 1 | 1 night | Sep 21 |
| C05 | 22 ft | None | 1 | 1 night | Sep 21 |
| C06 | 20 ft | None | 1 | 1 night | Sep 21 |
| C07 | 21 ft | None | 1 | 1 night | Sep 21 |
| C10 | 22 ft | None | 1 | 1 night | Sep 21 |
| D06 | 30 ft | None | 1 | 1 night | Sep 21 |
| D07 | 24 ft | None | 1 | 1 night | Sep 20 |
| E15 | 22 ft | None | 1 | 1 night | Sep 21 |
| E16 | 31 ft | None | 1 | 1 night | Sep 21 |
| E19 | 20 ft | None | 1 | 1 night | Sep 21 |
| E20 | 16 ft | None | 1 | 1 night | Sep 21 |
About Summit Lake South
Overview
Summit Lake South Campground (elevation 6,700 ft.) is conveniently located on the main road of Lassen Volcanic National Park. The campground is within walking distance of the small but scenic Summit Lake and eight miles from the 10,457-ft. Lassen Peak, the largest volcano in the park.
Hikers will find one of the park's major trails only 1/4-mile away from the campground and many more within a close proximity. Summit Lake South is on the opposite side of the lake from Summit Lake North Campground.
Recreation
The campground is a hub for hiking and backpacking trails within the park. Campers can access many of the park's 150 miles of hiking trails from the Summit Lake area. The Cluster Lakes loop trail--a major trailhead into the park's interior that bypasses several alpine lakes and is popular among birders--is located a short walk away at the Summit Lake Ranger Station. This is the closest campground to the Lassen Peak Trail and within 10 miles of the hydrothermal area, Bumpass Hell. Educational programs are presented at an amphitheater within the facility.
Facilities
This facility has vault toilets, drinking water, campfire rings, picnic tables and a more secluded tent-only loop. There are no flush toilets. For more information visit Campgrounds of Lassen Volcanic .
Natural Features
The national park is known for its volcanic history, as well as its diversity of plants and animals. It contains 300 active volcanic domes and many hydrothermal features, such as mud pots and steam vents. Lassen Peak is the southernmost active volcano in the Cascades, and the second-most recent volcano to erupt in the lower 48 of the United States before Mount Saint Helens.
Lassen National Park boasts over 700 species of flowering plants and 250 native species including birds, mammals, reptiles and fish. The park is at the junction of the Cascade Mountains, the Sierra Nevada Mountains and the Great Basin, thus providing many unique habitats.
45 monitored sitesRVs up to 59 ftNo hookups45 shadedPets OKFire pitsMax party 6
Getting there
From Redding, California take State Highway 44 east approximately 48 miles to the Manzanita Lake entrance of the park. The campground is 14 miles south of the entrance on the main park road.
Lassen Volcanic Np P.O.Box 100, Mineral, CA 96063530 595-6121
CampingDay Use AreaFishingHikingHistoric & Cultural SiteSwimming SiteVisitor Center
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-234040 · facility + sites
Photo gallery
Roll CS-234040 · Summit Lake South · Mineral CA12 frames · facility + sites
FAQ
How do I get a reservation at Summit Lake South?
Reservations for Summit Lake South are made through Recreation.gov. 55 of 180 tracked site-nights are currently open (30.6%). Campsite Sniper has also detected 53 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 16:19 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
How often do new openings appear at Summit Lake South?
Campsite Sniper detected 25 site-date openings at Summit Lake South in the last 7 days, 52 over 30 days and 53 over the last 90.
Which day of the week had the most detected openings at Summit Lake South?
Thursday accounted for the largest share of the openings Campsite Sniper detected in the last 90 days: 21 of 53 (39.6%). Days reflect when Campsite Sniper first detected each opening, not when the change occurred upstream.
Which sites at Summit Lake South fit a 35-foot RV?
6 of the 45 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 59 ft.
Which month has the most availability at Summit Lake South?
September 2026, with 55 open site-nights in the current snapshot of 180.
How far ahead of a stay do openings appear at Summit Lake South?
Half of the openings Campsite Sniper detected appeared at least 5 days before the stay date; the middle 50% landed 3-6 days out. Campsite Sniper can monitor future changes for dates you select.
When is the next open date at Summit Lake South?
As of the Sep 18, 2026 snapshot: the next open date is Sun, Sep 20. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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