Offshore Oʻahu offers world-class pelagic fishing for Blue Marlin, Ahi (Yellowfin Tuna), Mahi-Mahi, and Ono (Wahoo). Departing from Ko Olina, we quickly reach productive FADs (Fish Aggregating Devices) and current lines, trolling time-tested spreads from our 62-foot Ocean Yacht. Below is your guide to target species, seasonal patterns, and what to expect on a private charter.
Oʻahu Deep Sea Fishing Guide
Best Times to Catch Marlin, Mahi & Tuna in Hawaiian Waters
Blue Marlin (A'u)
Blue marlin can be caught year-round in Hawaii, but the biggest fish over 500 pounds are most common during summer months. The best time to fish is early morning or just before sunset.
Mahi Mahi (Dorado)
Mahi mahi are available year-round but become especially abundant during spring and fall months. In March, they average 10-15 pounds, but by late spring can reach 40-50 pounds.
Yellowfin Tuna (Ahi)
Yellowfin tuna over 100 pounds are caught more frequently during summer months than any other time of year. Tuna hang around Hawaii year-round, with the optimal time to target them from April through December.
Ono/Wahoo
The best time to catch ono is from May to October, with fish averaging 20-30 pounds in Hawaiian waters.
We typically find them on the ledge around 40 fathoms, but when we catch them farther offshore, it's often a sign that ahi are in the area!
Quick Seasonal Chart
🌊 Winter (Dec-Feb)
- Striped Marlin appear
- Bigeye Tuna season
- Skipjack & small Yellowfin Tuna
- Occasional Mahi Mahi
🌸 Spring (Mar-May)
- Mahi Mahi peak!
- Ono start showing up
- Good Ahi action begins
- Great overall fishing
☀️ Summer (Jun-Aug) - BEST SEASON FOR BIG FISH
- Blue Marlin over 500 lbs
- Yellowfin Tuna over 100 lbs
- Peak Ono season
- Consistent Mahi Mahi
🍂 Fall (Sep-Nov)
- Marlin & billfish season
- Mahi Mahi second peak
- 20-50 lb Yellowfin
- Spearfish more abundant
Hawaiian Trolling Tips
Hawaiian fishing primarily involves trolling with lures at speeds up to 9-10 knots. Often, six lines are in the water as soon as you leave the harbor, allowing you to hook Ono, Spearfish, and Mahi Mahi even before reaching the main fishing grounds.
Best Times of Day:
- Early morning (sunrise)
- Late afternoon (before sunset)
- Night fishing for Tuna and Swordfish (late spring/early summer)
What to Bring on Your Charter
- ✓ Sunscreen (reef-safe)
- ✓ Polarized sunglasses
- ✓ Hat & light long sleeves
- ✓ Seasickness medication (if needed)
- ✓ Camera for your trophy shots!
Ready to Book Your Adventure?
Reel Addiction III departs from Ko Olina Harbor with the only SeaKeeper gyro stabilizer in the fleet - meaning we fish when other boats can't!
📞 (808) 867-FISH (3474)
Charter Options:
- 3/4 Day (6 hours) - $2,495
- Full Day (8-10 hours) - $2,995
- Extravaganza (Sun up to sun down) - $3,300