Overview:
On the southern coast of Upolu Island, Samoa hides a natural marvel that looks like it was taken straight from a fantasy novel: the To Sua Ocean Trench. This breathtaking swimming hole, surrounded by lush gardens and dramatic volcanic landscapes, is one of the most iconic and Instagram-worthy locations in all of the South Pacific.
“To Sua,” meaning “giant swimming hole,” is a stunning 30-meter deep crater filled with crystal-clear turquoise water, connected to the sea through an underground lava tube. Accessible via a steep wooden ladder, this unique sinkhole invites brave travelers to descend into its serene waters, float in the peaceful silence, and take in the surreal surroundings of Samoa’s natural beauty.
From volcanic cliffs and blowholes to nearby cultural villages and beachside relaxation, To Sua Ocean Trench is more than a destination—it’s a must-experience.
Quick Facts:
Location: Lotofaga Village, Upolu Island, Samoa
Entrance Fee: WST $20 (approx. $7.50 USD)
Depth: 30 meters
Height of Ladder: 10 meters (wooden ladder to access the trench)
Opening Hours: 8:00 AM to 5:00 PM daily
Best Time to Visit: May to October (Dry season)
Facilities: Toilets, changing rooms, picnic areas
Lifeguards: None on site (swim at your own risk)
Budget Breakdown:
| Expense Category | Cost (WST) | Cost (USD) |
|---|---|---|
| Entry Fee (To Sua) | WST $20 | $7.50 |
| Taxi from Apia (round trip) | WST $100 | $37.50 |
| Local Lunch | WST $25 | $9.40 |
| Souvenirs & Snacks | WST $30 | $11.30 |
| Accommodation (1 night) | WST $150 | $56.30 |
| Total Estimate | WST $325 | $122.00 |
Note: Prices are based on mid-range travel. Budget options are available for cheaper stays and local buses instead of taxis.
Getting There:
To Sua Ocean Trench is located on the southern coast of Upolu Island, near Lotofaga village, roughly a 1-hour drive from Apia, Samoa’s capital.
By Taxi: Taxis from Apia typically cost around WST $100 round trip.
By Car Rental: Renting a car offers the most flexibility and costs around WST $120–$180 per day.
By Tour: Group or private tours often include other highlights on the south coast, such as Lalomanu Beach and Sopoaga Falls.
Flights:
The main international gateway to Samoa is Faleolo International Airport (APW) on Upolu Island.
From Australia (e.g., Sydney): 5–6 hours direct
From New Zealand (e.g., Auckland): 4–5 hours direct
Flight Cost (Round Trip):
From Australia: $500–$800 USD
From New Zealand: $400–$700 USD
Domestic Travel: No need for domestic flights—To Sua is on the same island as the main airport.
Safety:
Swimming Safety: No lifeguards. The ladder is steep and slippery—use with caution. Only confident swimmers should enter the trench.
Weather: Check for rain before visiting—the ladder and rocks can be slippery.
Valuables: Keep valuables out of sight or avoid bringing them, as security is minimal.
Health: Bring insect repellent and sunscreen. Tap water is not always safe to drink—opt for bottled water.
Climate:
Samoa features a tropical climate year-round:
Dry Season (May to October): Ideal for travel with warm temperatures (25°C to 28°C) and low humidity.
Wet Season (November to April): Hotter, more humid (28°C to 31°C), with afternoon rains and occasional cyclones.
Best time to visit: June to September for perfect weather and fewer bugs.
Best Things to Do in To Sua Ocean Trench
1. Swim in the Trench
This is a once-in-a-lifetime swim! Descend the 10-meter ladder and float in the emerald depths surrounded by moss-covered rock walls and silence. The water is salty, refreshing, and unforgettable.
2. Stroll the Garden Surroundings
The grounds around To Sua are well-maintained with lush gardens, traditional Samoan fale shelters, and ocean lookout points.
3. Visit the Lava Rock Coastline
Just past the trench are dramatic lava rock formations and ocean blowholes. These natural volcanic features provide stunning photo ops and a chance to see the rugged South Pacific coastline up close.
To Sua Ocean Trench Travel Guide & Nearby Attractions:
Lalomanu Beach
A 20-minute drive from To Sua, Lalomanu Beach is known for its soft white sand and clear, shallow waters—perfect for snorkeling and relaxing.
Highlight: Stay in a beachside fale and enjoy traditional Samoan meals.
Sopoaga Falls
A short drive inland reveals this towering waterfall surrounded by tropical rainforest. Easily viewable from a lookout point, it’s a great nature stop on your way to or from To Sua.
Highlight: Enjoy a coconut drink from nearby stalls.
Piula Cave Pool
Located on the north coast (about an hour from To Sua), this freshwater cave pool is excellent for a refreshing dip after a hot day.
Highlight: Swim into the cave tunnel under the church compound for a secret adventure.
Top Attractions in To Sua Ocean Trench
To Sua Trench Pool
What to See: The main feature, the 30-meter crater with turquoise saltwater.
Experience: Peaceful swimming, photography, and meditation in nature.
Facilities: Ladder access, showers, and restrooms on site.
Ocean Blowholes
What to See: Explosive water bursts from lava tubes during high tide.
Experience: Stand safely back and enjoy nature’s dramatic force.
Best Time: During high tide or just after rainfall.
Cliffside Gardens and Lookouts
What to See: Palm-lined walking paths, sea cliffs, and wildflowers.
Experience: Ideal for relaxing, picnics, and stunning sea views.
Bonus Tip: Bring a picnic basket and enjoy a quiet lunch under a fale.
The To Sua Ocean Trench is more than a swimming spot—it’s a cultural and natural masterpiece set in the heart of Upolu Island. Whether you’re looking to explore the mysterious depths, capture jaw-dropping photos, or simply relax surrounded by Samoa’s natural beauty, this magical place should top your travel list. With nearby beaches, waterfalls, and cultural villages, your trip to To Sua will leave you with unforgettable memories and awe-inspiring stories.