Okinawa Trough fishing forecast
Okinawa Trough is a saltwater fishing spot in NW Pacific, Japan. Anglers here target Striped Marlin, Yellowfin Tuna, Mahi-Mahi. The most productive months are typically April, May, June, July, August, September, October.
Today’s verdict
Ranks #335 of 409 spots FishRadar scored worldwide today
Trending down — 10 points below this spot’s 7-day average
Score confidence ±4 points, from 8 live signals
The statistical model disagrees with the physics model here today — treat this score with extra caution.
Current conditions
| Sea surface temp | 27.6 °C |
|---|---|
| Wind | 49 km/h from SE, gusting 75 km/h |
| Wave height | 2.6 m at 11 s |
| Current | 0.22 m/s toward NE |
| Pressure | 1009 hPa |
| Depth | 45 m |
| Cloud cover | 100% |
| Chlorophyll | 0.11 mg/m³ |
| Salinity | 34.5 PSU |
| Mixed-layer depth | 30 m |
| UV index | 3 |
| Precipitation (24h) | 0.4 mm |
| Wind sea | 1.4 m at 5 s |
| Ground swell | 1.9 m at 11 s from S |
| Current shear (surface vs 50 m) | 0.22 → 0.13 m/s |
The water here is 2.9 °C warmer than the October average of 24.7 °C. Warmer-than-normal water pushes cool-water species deeper and brings warm-water species in earlier than the calendar suggests. The water is mixed to about 60.0 m, so surface temperature carries well down the water column.
Updated 1 h ago.
What the score means at Okinawa Trough
Okinawa Trough currently scores 60 out of 100 (Good). Water temperature is 27.6 °C. 8 forecast signals are active in this score.
- Water temperature +25.0
- how close the water is to this species mix’s comfort band
- Current +18.0
- moving water concentrates bait
- Chlorophyll +6.7
- plankton density — the base of the food chain
- Thermocline +4.0
- a defined layer stacks fish at one depth
- Pre-storm bite +3.5
- the classic feed before heavy weather
- Barometric pressure +3.3
- falling pressure often triggers feeding
What’s biting now
The model expects today: giant-trevally, yellowfin-tuna, mahi-mahi, wahoo, striped-marlin, pacific-bluefin-tuna, silver-pomfret, japanese-seabass
Bite windows
Best months for Okinawa Trough:
Score history at this spot
30 days tracked at this exact location
Best recent day: 2026-09-25, 82/100
19 day(s) at 70+ in the tracked period
+7 points vs the same day last week
About this spot
Open-water marine fishing — conditions can change quickly with offshore weather, so watch the live wind and wave forecast closely before and during your trip.
Approximate bottom depth: 45 m
Access & shore
Best reached by boat · offshore ground
What you can catch
-
Kajikia audax
-
Thunnus albacares
-
Coryphaena hippurus
Best months by species at Okinawa Trough
| Striped MarlinKajikia audax | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yellowfin TunaThunnus albacares | ||||||||||||
| Mahi-MahiCoryphaena hippurus |
Typical months; local seasons and closures apply.
Local regulations
Licensing:
- saltwater-recreational — residents No general national licence for shore-based recreational sea fishing. What binds you is the prefectural fisheries adjustment rule (都道府県漁業調整規則): permitted gear and methods, prohibited areas, closed periods, per-species size limits and restrictions on fishing under lights are all set there. Do not enter posted commercial fishing-rights areas (漁業権). Recreational bluefin tuna additionally requires a national notification — see the species rule., non-residents Same rules apply. Tourists fishing from a charter boat fish under the operator's arrangements, but the prefectural rules still bind the angler. The Fisheries Agency publishes a leaflet for foreign recreational fishers.
- freshwater-recreational — residents Inland fishing requires a "yugyoken" (遊漁券) issued by the local fisheries cooperative for the specific river or lake, sold per-day or per-season at tackle shops and convenience stores near the water., non-residents Same yugyoken requirement applies to visitors.
Some rules may have changed since our last verification — always confirm with the authority before you fish.
FishRadar regulations are summaries for informational purposes only. Japanese recreational fishing rules are set at the prefectural level (都道府県漁業調整規則) and vary between neighbouring prefectures. Always verify with the prefecture and the local fisheries cooperative (漁業協同組合) before fishing, and never enter posted commercial fishing-rights zones. Bluefin tuna rules change during the season without notice — check the Fisheries Agency page on the day you fish.
Check Okinawa Trough before you go
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Nearby spots
Explore 10 more fishing spots within 1482 km of Okinawa Trough.
-
Okinawa East China Sea
Kyushu Pacific
Miyazaki Pacific Japan
Tsushima Strait Japan
Kochi Pacific Japan
Osaka Bay Japan
Lake Biwa Japan
Suruga Bay
Suruga Bay Japan
Sagami Bay Kanagawa
Frequently asked questions
What fish can you catch at Okinawa Trough?
Anglers at Okinawa Trough target Striped Marlin, Yellowfin Tuna and Mahi-Mahi.
When is the best time to fish Okinawa Trough?
The most productive months at Okinawa Trough are typically April, May, June, July, August, September, October.
What is the fishing forecast for Okinawa Trough right now?
Okinawa Trough currently scores 60 out of 100, based on live ocean and weather conditions — see the full breakdown on this page.
Is the thermocline set up at Okinawa Trough right now?
Not strongly right now — the water column is fairly mixed, so fish are less depth-locked.
How deep is the water at Okinawa Trough?
The scored point sits over roughly 45 m of water. Depth shapes which species hold here and how the thermocline forms.
Fishing guides for this spot
- How to Catch Yellowfin Tuna: Chasing the Blue-Water BrawlerHow to Catch Mahi-Mahi / Dorado: Chasing the Electric-Green Ghosts of the BluewaterHow to Read Tides for Fishing
Forecasts, not guarantees — check local rules before you fish.