5 Tips for Planning Your Congaree National Park Firefly Viewing Trip
Last updated July 14, 2026 How we research
Plan a future visit only after official lottery dates are announced; the 2026 April application and May event windows have passed.
Congaree protects the Southeast's largest remaining old-growth bottomland hardwood forest, where synchronized fireflies light up 2 weeks each spring. Seeing them requires entering a lottery, timing your visit to warm nights, and gearing up for South Carolina's oppressive humidity and mosquitoes.
- Event access restricted Follow date-specific pass rules
- $1 apply / $25 winners 2026 lottery / event charges
- May 13–20, 2026 (past) Firefly season
- 0.6 mi Firefly Trail distance
Understand the Lottery and Wait for Official Dates — Congaree Valley
Essential
April applications and May viewing were different windows in 2026; future dates need a fresh official announcement.
- 2026 applications April 7–14; viewing May 13–20 (historical)
- Ticket grants entry to specific evening viewing slot
- Random lottery, not opening-day ticket sales
- $1 application; winners pay $25 total, one application per household
How the Lottery Works
The 2026 event is historical: applications ran April 7–14, with the viewing event May 13–20. One application per household; the nonrefundable application charge was $1, and winners paid another $24 ($25 total). This was a random lottery, not first-come ticket sales. Do not cancel/re-enter or expect daily releases. Future dates and rules are not yet confirmed here: wait for the next official NPS/Recreation.gov announcement.
Applications were accepted throughout the stated April window and awarded by random draw, not by how early someone applied. There were no early-morning firefly event slots or a daily ticket-release strategy; future access must follow the next official announcement.
Timing Your Application
The 2026 event is historical: applications ran April 7–14, with the viewing event May 13–20. One application per household; the nonrefundable application charge was $1, and winners paid another $24 ($25 total). This was a random lottery, not first-come ticket sales. Do not cancel/re-enter or expect daily releases. Future dates and rules are not yet confirmed here: wait for the next official NPS/Recreation.gov announcement.
For the 2026 May 13–20 event, day visitors had to exit by 4:30 p.m.; pass holders entered 7–8:30 p.m. The pass was valid only for its named person and date and scanned once, not for re-entry. Longleaf and Bluff campgrounds closed during the event, and no backcountry camping permits were issued. Use outside-park lodging/camping for event nights; normal campground availability on other dates does not override event restrictions.
Time Your Visit for Temperatures Above 65°F — Harry Hampton Visitor Center area
Best TimeFirefly intensity peaks on warmer nights; cold fronts before June silence the display.
- Fireflies emerge when nightly lows exceed 65°F
- Peak viewing: 9–10 PM each evening
- Choose only a date in the official event window, not an invented June extension
- Display may peter out if temps drop mid-season
Why Temperature Matters
Weather affects firefly activity, and rain can slow or stop flashing. The 2026 permitted viewing dates were May 13–20, not a choice of early June nights. Biology and weather do not guarantee a display.
Checking the Forecast
Check the National Weather Service forecast for your authorized date. Do not assume an event extension, re-entry or a replacement ticket after poor weather; follow the official rules.
Bring layers anyway. Even on 70°F days, the forest floor and swamp water create a cool, damp microclimate after sunset.
Prepare for Extreme Heat, Humidity, and Swarming Mosquitoes — Congaree bottomland forest
TradeoffsSouth Carolina's humidity peaks in June; mosquito season overlaps firefly viewing.
- Daytime temps 77–85°F; humidity 70–90% year-round in the forest
- Mosquitoes swarm mid-May onward; peak in June
- Bring 30%+ DEET insect repellent; follow product directions before arrival; no application after entering the event
- Wear long sleeves and pants despite the heat
Managing the Heat
The NPS cautions that Congaree's heat and humidity from late spring through early fall demand serious preparation. Bring at least 2 liters of water per person, wear light-colored breathable clothing, and schedule strenuous activities for early morning.
The Boardwalk Loop (2.6 mi, easy) stays elevated above the forest floor and includes benches for breaks. Save longer hikes for cooler months.
Mosquito Defense
Apply insect repellent before arrival, following its product directions. NPS prohibits applying insect repellent after arrival during the viewing event; do not spray in the habitat.
Long sleeves and long pants defeat mosquitoes even in 80°F heat; consider lightweight, loose-fitting hiking pants rather than shorts. Avoid dusk (4–7 PM) when mosquitoes are most active.
Book an Outside-Park Base for Event Nights — Outside-park lodging for event nights
Plan EarlyChoose an outside-park base; event closures override ordinary campground bookings.
- Longleaf and Bluff are closed for event nights; choose an outside-park base
- No RV hookups; vault toilets; water available at visitor center
- Columbia hotels 20 minutes south: budget to luxury options
- Vacation rentals in Hopkins (6 mi away): cabins and glamping sites
On-Site Camping
Ordinary Longleaf/Bluff camping is reserved separately through Recreation.gov; confirm site counts, rates and availability for non-event dates. For the 2026 May 13–20 event, day visitors had to exit by 4:30 p.m.; pass holders entered 7–8:30 p.m. The pass was valid only for its named person and date and scanned once, not for re-entry. Longleaf and Bluff campgrounds closed during the event, and no backcountry camping permits were issued. Use outside-park lodging/camping for event nights; normal campground availability on other dates does not override event restrictions.
A camping reservation does not authorize event entry or override a closure. Confirm future event restrictions before arranging your stay.
Nearby Hotel & Rental Options
Columbia (20 minutes south) offers budget chains (SpringHill Suites, Holiday Inn Express) and boutique hotels (Hotel Trundle, Graduate Columbia). Downtown is walkable and has restaurants and shops.
Hopkins, 6 miles northeast, has vacation rentals including cabins and glamping sites. Book 2 months ahead during firefly season to secure lodging.
Bring a Red Flashlight and Heavy-Duty Mosquito Repellent — Firefly Trail
EssentialOnly red light is permitted; white flashlights and phones disrupt the firefly display.
- Red flashlight only; white/blue lights destroy night vision and scatter fireflies
- Cell phones may not be used for lighting or photos/video in the viewing area
- Wear long sleeves, long pants, and socks despite heat
- Apply 30%+ DEET before departure; follow product directions before arrival; no application after entering the event
Why Red Light Matters
Use flashlights sparingly, with red mode or a red filter, and point them at the ground. NPS prohibits cell-phone lighting and photos/video in the viewing area.
Bring a light with a red mode or red filter and test it before arrival. Follow ranger instructions; do not shine it into the habitat.
Dress for the Swamp
Despite May–June heat, wear long sleeves and long hiking pants to protect against mosquitoes and brush. Choose lightweight, breathable fabrics and avoid dark colors, which attract mosquitoes.
Thick hiking socks and closed-toe boots keep mosquitoes off your ankles. Apply insect repellent before arriving at the park, not on the trail; no application is allowed after arrival during the event.
Common Questions
When exactly does firefly season start and end?
The 2026 event is historical: applications ran April 7–14, with the viewing event May 13–20. One application per household; the nonrefundable application charge was $1, and winners paid another $24 ($25 total). This was a random lottery, not first-come ticket sales. Do not cancel/re-enter or expect daily releases. Future dates and rules are not yet confirmed here: wait for the next official NPS/Recreation.gov announcement.
Can I view fireflies without a lottery ticket?
A valid date/person-specific event pass is required on event nights, despite ordinary park admission being free. For the 2026 May 13–20 event, day visitors had to exit by 4:30 p.m.; pass holders entered 7–8:30 p.m. The pass was valid only for its named person and date and scanned once, not for re-entry. Longleaf and Bluff campgrounds closed during the event, and no backcountry camping permits were issued. Use outside-park lodging/camping for event nights; normal campground availability on other dates does not override event restrictions.
What if I don't win the lottery?
The 2026 event is historical: applications ran April 7–14, with the viewing event May 13–20. One application per household; the nonrefundable application charge was $1, and winners paid another $24 ($25 total). This was a random lottery, not first-come ticket sales. Do not cancel/re-enter or expect daily releases. Future dates and rules are not yet confirmed here: wait for the next official NPS/Recreation.gov announcement.
Is there cell service or WiFi at the park?
Congaree has limited to no cell service in the backcountry and forest. The Harry Hampton Visitor Center area may have spotty coverage. Download offline maps, charge devices fully before arriving, and plan transportation accordingly—the park warns that taxis and rideshares do not reliably serve the area.
Can I take photos or videos of the fireflies?
NPS prohibits using cell phones for lighting or taking photos/video in the viewing area. Keep any permitted flashlight use minimal, red and pointed at the ground; follow ranger instructions and the next event’s published rules.
Sources & Further Reading
- Fireflies - Congaree National Park — National Park Service
- Congaree National Park Firefly Viewing Lottery - Recreation.gov — Recreation.gov
- Trail Information - Congaree National Park — National Park Service
- Weather - Congaree National Park — National Park Service
- Camping - Congaree National Park — National Park Service
- Longleaf Campground - Recreation.gov — Recreation.gov
- Being Prepared for Excessive Heat & Humidity — Ready.gov
- The Best Congaree National Park Hotels — Booking.com
