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Underground River in 2027

The paddle boat slides out of the sunlit lagoon and into the dark, and the cliffs close overhead: that part is the same in any month. What changes through 2027 is the rain, the crowds at the wharf and how early you need to book. Here is the year, month by month, with every tour and its price.

A long tropical beach at dawn with outrigger boats on the sand
Dawn on a long beach with outrigger boats: Underground River days start early in every season.

Booking choice: The zipline and mangrove day, from $72 per person. Check dates Tour details

The monthly figures are the PAGASA averages for Puerto Princesa City (1991 to 2020), as given on Wikipedia's Puerto Princesa page: they describe a typical year in the city, not a forecast for your day. The seasons are PAGASA's for the Philippines as a whole. Prices, lengths and what each tour includes are from the GetYourGuide listings, read on 15 November 2026.

The quick answer

Nationally, PAGASA counts December to May as the dry season and June to November as the rainy one; in Puerto Princesa, February to April are the driest months on the long-term averages. The busy weeks are Holy Week, 21 to 28 March 2027, and April to May, so book those dates early: the park takes 900 visitors a day. From-prices on today's listings start at $38 per person and reach $81 for the river and firefly tour, with the private tour at $341 per group of up to 4.

What changes at the Underground River in 2027?

Nothing announced so far. The 900-a-day limit, the permit rule and the 08:00 to 16:00 tour hours carry into 2027, and the new Sabang Wharf is still at the design stage.

The park has not published any 2027 changes by 15 November 2026. Its January 2026 notices set the frame: a Visitor Entry Permit for every visitor, a cap of 900 a day and tour hours that keep clear of the bats and swiftlets as they leave and return to the cave. The guest-handling process tested at Sabang Wharf since February 2026 is the one new step to know, and your guide takes you through it. The details are in our 2026 updates post.

Two city items to watch. The Sabang Integrated Wharf, designed with TIEZA and reviewed in February 2026, with no build dates yet. And the Subaraw National Music Championship, which the city says it will host in 2027.

Underground River, Zipline & Mangrove Paddle Boat

The cave with an audio guide, lunch on the beach, the 800 m Sabang X zipline along the coast and the mangrove paddle boat, entrance and zipline fees included.

★ 4.6 · 10 hours · from $72

Explore the zipline and mangrove day Tour details

What is the weather like in Puerto Princesa month by month?

Warm all year, with average highs of about 31 to 33°C. February to April are the driest months on the averages, and June to November bring most of the rain.

The table gives the average daily high, the average monthly rainfall and the rainy days in each month, from PAGASA's station in the city via Wikipedia. Sabang is on the west coast, about 80 km away, so read the numbers as a guide. The last column is what the month means for planning.

Rain in the forecast does not cancel the cave; the boat ride decides. The park pauses tours only in extreme weather, and the open-sea crossing from Sabang is the reason. On a wet day, bring a light rain jacket and a dry bag for your phone. The full picture, with the hours of the day, is in our best-time guide.

MonthAverage highRainfallRainy daysFor your trip
January30.9°C56 mm5Cool dry season nationally; a good month for the full Sabang day
February31.1°C31 mm3The driest month on the table
March31.9°C37 mm4Holy Week falls on 21 to 28 March 2027: book early
April32.9°C49 mm5Hot dry season and busy weeks for permits
May32.9°C126 mm10Still busy; the rains start to build late in the month
June32.1°C157 mm14Rainy season begins nationally, per PAGASA
July to September31.5 to 31.7°C170 to 173 mm14 to 15Green months; a shorter day keeps plans simple
October31.6°C213 mm15The wettest month on the table
November31.4°C196 mm12Subaraw festival weeks in the city, around 11 November
December31.0°C175 mm9The dry season begins nationally, per PAGASA
Forested limestone karst peaks rising above the sea
The karst of the St. Paul Mountain Range above the sea: green in the rainy months, sharp against the sky in the dry ones.

When are the busiest weeks at the Underground River in 2027?

Holy Week, from Palm Sunday on 21 March to Easter Sunday on 28 March 2027, and the hot dry months of April and May. Expect the permit slots to go first then.

With a fixed 900 visitors a day, a busy week means fewer open slots, not a bigger crowd in the cave. Holy Week is a major holiday week in the Philippines, and in 2027 it falls in late March, inside the dry season. April and May follow as the busiest stretch for permits. If your dates fall there, book the tour as soon as they are fixed.

November has its own buzz in the city. The Subaraw Biodiversity Festival runs around Underground River Day on 11 November, per the City Tourism Office, with parades and exhibits in town while the cave tours carry on as usual. December sits in the holiday season, so book those dates early too.

The most booked day: pickup downtown, the Buenavista viewpoint over Ulugan Bay, the boat from Sabang, the cave and lunch by the sea.

Check dates for the full-day trip with lunch

When should you book an Underground River tour for 2027?

As soon as your dates are fixed. Every tour here cancels free up to 24 hours before, and the listings let you reserve now and pay later.

The permit is what you are really booking. Your tour secures it, and you cannot count on a walk-in slot in Sabang: the park says plainly that going straight to the park or staying overnight there does not guarantee one. Booking early also gets you a normal pickup. On the Corazon listings, bookings made after 12:00 noon on the day before count as last-minute and get a later pickup time, after 8:00.

Arriving on a cruise ship? The shared Corazon tours do not take cruise guests, so book the private tour, which the listing describes as perfect for cruise passengers or anyone short on time. How the permit works step by step is in our permit guide.

Your own van and driver for up to 4 people, with the boats, entrance fees, the audio guide and lunch included: the option for cruise guests.

Check dates for the private tour

How much does an Underground River tour cost in 2027?

Plan on today's from-prices: $38 to $60 per person for most day tours, $72 with the zipline and mangroves, $81 with the fireflies.

Prices are in USD and move with the date, so check again when you book. Add the PHP 150 environmental fee in cash for every tour except the tour with fees included, and lunch on the lowest-price tour and the guided day trip. The last column shows what the day adds to the same paddle boat inside the cave.

Optional extras are paid in pesos on site. One listing prints them: PHP 350 per person for the mangrove paddle boat, PHP 550 for the Sabang X zipline, PHP 300 to 650 for Ugong Rock. All of it, with tips, is in our cost guide.

TourFrom (USD)LengthPickupThe day adds
Lowest-price tour$38 per person7 to 8 hoursHotel pickup, Puerto PrincesaThe cave only, lunch extra
Guided day trip$39 per person9 hoursPickup within 7 km of the cityA licensed guide, lunch extra
Full-day trip with lunch$45 per person8 to 10 hoursHotel pickup, downtown Puerto PrincesaLunch in Sabang
Tour from the city proper$50 per person9 hoursPickup in Puerto Princesa city properBuffet lunch, fees covered
Buffet tour, 6 hours$51 per person6 hoursPickup in the city properBuffet lunch, 6-hour day
Tour with fees included$60 per person8 hoursShared pickup in town properLunch and the environmental fee
Zipline and mangrove day$72 per person10 hoursPickup within 5 km of the airportZipline and mangrove paddle boat
River and firefly tour$81 per person10 hoursPickup downtown or at the airportFireflies and dinner at night
Private tour for small groups$341 per group8 to 9 hoursPickup within 5 km of the airportYour own van and driver

Which Underground River tour suits which month?

Your call, and the month helps. The dry months suit a long day with the zipline; the rainy months suit a shorter day; any month works for the fireflies.

From January to May the long day pays off. The zipline and mangrove day fills 10 hours in Sabang: the cave, lunch, the line along the coast and the paddle boat through the mangroves at the end. From June to November a tighter plan is handy, and the 6-hour tour with buffet gets you there and back with lunch in a shorter day.

The fireflies come out in every season. The river and firefly tour takes you to the cave by day, back to your hotel for a rest, then out again after dark to the mangroves, with dinner. For a first visit with no extras, the full-day trip with lunch is the one most people book.

The river by day and the fireflies in the mangroves after dark, with lunch, dinner and all entrance fees.

Check dates for the river and firefly tour

Frequently asked questions

What is the best month to visit the Underground River?

It is the reader's choice. February to April are the driest months on the Puerto Princesa averages; June to November are greener and wetter.

When is Holy Week in 2027?

From Palm Sunday on 21 March to Easter Sunday on 28 March 2027. It is one of the busiest weeks for permits, so book early.

Is the Underground River open in the rainy season?

Yes, tours run daily. The park pauses them only in extreme weather, when the sea is too rough for the boat from Sabang.

How much is an Underground River tour in 2027?

On today's listings from $38 per person, up to $81 for the river and firefly tour, plus the PHP 150 environmental fee on most tours.

Ready to book

Choose your tour

Free cancellation up to 24 hours before on every option. Prices are from-prices in USD and move with the season.

Underground River, Zipline & Mangrove Paddle Boat

Underground River, Zipline & Mangrove Paddle Boat

★ 4.6 · 10 hours

  • Van, boats and a professional guide
  • Cave tour with audio device
  • Lunch in Sabang
From$72per personCheck dates
Underground River Full-Day Trip with Lunch

Underground River Full-Day Trip with Lunch

★ 4.5 · 8 to 10 hours

  • Hotel pickup and van, up to 13 guests
  • Boat from Sabang and the paddle boat inside
  • Guide and lunch in Sabang
From$45per personCheck dates
Underground River & Firefly Watching with Dinner

Underground River & Firefly Watching with Dinner

★ 4.5 · 10 hours

The river by day, the fireflies in the mangroves after dark

From$81per personCheck dates

Plan your date before you go

The cave, lunch, an 800 m zipline and a paddle boat through the mangroves.

Check dates for the zipline and mangrove day