Onomea Bay | Hilo

Onomea Bay: A Hidden Gem on the Big Island of Hawaii

Location:
Onomea Bay is located along the Hamakua Coast, approximately 6.5 miles north of Hilo on the Big Island of Hawaii. It is easily accessible via the Old Mamalahoa Highway and is part of the scenic Hamakua Heritage Corridor.

Overview of Onomea Bay

Onomea Bay is a picturesque, crescent-shaped inlet nestled amidst lush greenery and rugged lava rock formations. Known for its dramatic beauty, the bay was formed by ancient lava flows that interacted with the ocean, creating a rugged yet serene landscape. The area is teeming with tropical plants, waterfalls, and unique wildlife, making it a haven for nature enthusiasts and photographers.

Key Attractions

1. Hawaii Tropical Bioreserve & Garden

• One of the bay’s highlights, this lush botanical garden spans 40 acres of tropical rainforest and features:
  • Over 2,000 species of tropical plants, including orchids, bromeliads, and palms.
  • Scenic trails leading to the shoreline and Onomea Bay viewpoints.
  • Stunning waterfalls and tranquil streams.

2. Old Mamalahoa Scenic Route

• A winding road that offers breathtaking views of the coastline and passes through dense tropical forests, charming villages, and historic bridges.
• A detour from the main Hawaii Belt Road (Highway 19), it leads directly to Onomea Bay and other hidden gems along the coast.

3. Onomea Trail

• A short but enchanting trail that descends through a lush rainforest to the shores of Onomea Bay.
  • Length: Approximately 0.5 miles one way.
  • Difficulty: Moderate; expect uneven terrain.
  • The trail offers stunning views of the bay, tidal pools, and rugged cliffs.

4. Onomea Arch (Historical Feature)

• Once a natural lava rock arch that stood at the mouth of the bay, the Onomea Arch was a famous landmark. Although it collapsed in the early 20th century, its remnants still add to the bay’s rugged beauty.

Activities at Onomea Bay

1. Hiking and Nature Walks

• Trails around the bay and through the tropical gardens provide opportunities to explore the area’s natural beauty up close.

2. Photography

• The dramatic coastline, lush vegetation, and tranquil waters make Onomea Bay a prime spot for photographers.

3. Wildlife Watching

• The bay is home to various seabirds, fish, and other marine life. Lucky visitors might spot Hawaiian green sea turtles in the bay’s waters.

4. Relaxation and Picnics

• Though swimming is not recommended due to strong currents, the peaceful surroundings make Onomea Bay a perfect spot for a picnic or quiet reflection.

Visitor Information

How to Get There

• From Hilo, drive north on Highway 19 for about 6 miles. Turn onto the Old Mamalahoa Highway for a scenic detour to the bay.
• Parking is available near the trailhead or at the Hawaii Tropical Bioreserve & Garden.

Best Time to Visit

• Morning to Early Afternoon: Offers the best lighting for photographs and cooler temperatures for hiking.

What to Bring

• Comfortable shoes for hiking.
• Water and snacks, as there are limited facilities nearby.
• Camera or smartphone for capturing the stunning scenery.
• Sunscreen and insect repellent.

Admission Fees

• Hawaii Tropical Bioreserve & Garden:
  • Adults: $25
  • Children (6–16): $12
  • Children under 6: Free
  • Admission includes access to garden trails with views of Onomea Bay.

Tips for Visiting Onomea Bay

Stay on Marked Trails:

• The terrain can be steep and slippery, especially after rain.

Respect Nature:

• Avoid disturbing plants or wildlife in this ecologically sensitive area.

Prepare for Limited Amenities:

• There are no restrooms or food vendors directly at the bay. Plan accordingly.

Combine with Other Attractions:

• Onomea Bay is near several other Hamakua Coast attractions, including Akaka Falls, Hilo Farmers Market, and the Kaumana Caves.

Why Visit Onomea Bay?

Onomea Bay is a tranquil and unspoiled destination that offers a perfect blend of natural beauty, history, and adventure. Whether you're walking through the lush trails, enjoying the vibrant gardens, or simply soaking in the breathtaking views, Onomea Bay provides a serene escape into the heart of Hawaii’s tropical paradise. It's a must-visit for anyone exploring the Big Island’s Hamakua Coast.