Similan Islands Thailand fishing forecast
Similan Islands Thailand is a saltwater fishing spot in Phang Nga Thailand, Thailand. Anglers here target Wahoo, Yellowfin Tuna, Indo-Pacific Sailfish, Giant Trevally. The most productive months are typically November, December, January, February, March, April.
Today’s verdict
Ranks #106 of 437 spots FishRadar scored worldwide today
Trending up — 5 points above 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 | 29.1 °C |
|---|---|
| Wind | 24 km/h from WSW |
| Wave height | 1.0 m at 5 s |
| Current | 0.12 m/s toward N |
| Pressure | 1013 hPa |
| Depth | 16 m |
| Cloud cover | 14% |
| Chlorophyll | 0.17 mg/m³ |
| Salinity | 32.4 PSU |
| Mixed-layer depth | 24 m |
| UV index | 7 |
| Wind sea | 0.5 m at 3 s |
| Ground swell | 0.8 m at 5 s from WNW |
| Current shear (surface vs 50 m) | 0.12 → 0.02 m/s |
The water here is 1.2 °C warmer than the September average of 27.9 °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 39.3 m, with the thermocline below that.
Updated 1 h ago.
What the score means at Similan Islands Thailand
Similan Islands Thailand currently scores 82 out of 100 (Good). Water temperature is 29.1 °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 +10.1
- plankton density — the base of the food chain
- Waves +9.0
- swell energy stirring the water column
- Wind +5.0
- surface chop, oxygen and bait drift
- Thermocline +4.0
- a defined layer stacks fish at one depth
What’s biting now
The model expects today: giant-trevally, yellowfin-tuna, mahi-mahi, wahoo, albacore, pacific-albacore, great-barracuda, bonefish
Bite windows
Best months for Similan Islands Thailand:
Score history at this spot
30 days tracked at this exact location
Best recent day: 2026-08-22, 85/100
25 day(s) at 70+ in the tracked period
About this spot
Open coastal saltwater — conditions and safety depend heavily on the live wind, wave, and tide forecast, so check them before you head out.
Approximate bottom depth: 16 m
Access & shore
Fishable from shore · offshore-only
What you can catch
-
Acanthocybium solandri
-
Thunnus albacares
-
Istiophorus platypterus
-
Caranx ignobilis
Best months by species at Similan Islands Thailand
| WahooAcanthocybium solandri | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yellowfin TunaThunnus albacares | ||||||||||||
| Indo-Pacific SailfishIstiophorus platypterus | ||||||||||||
| Giant TrevallyCaranx ignobilis |
Typical months; local seasons and closures apply.
Local regulations
Licensing:
- saltwater-recreational — residents Thailand does NOT require a recreational fishing licence or permit for rod-and-line angling in public waters (for Thai nationals or visitors). However, all fishing is PROHIBITED inside marine national parks, protected/reserved species may never be taken, and area/gear restrictions under the Royal Ordinance on Fisheries B.E. 2558 (2015) may apply. Private fishing parks set their own entry fees and rules., non-residents Visiting anglers do not need a recreational licence for rod fishing in public waters, but the same prohibitions apply: no fishing inside marine national parks (fines apply per person aboard the vessel), and no taking of protected species. Confirm local rules with the Department of Fisheries and, for national-park waters, the Department of National Parks (DNP).
FishRadar regulations are summaries for informational purposes only. Thailand does not require a recreational licence for rod-and-line fishing in public waters, but rules vary by location and can change. ALL fishing is PROHIBITED inside Thailand's marine national parks (administered by the Department of National Parks); fines are charged per person aboard the vessel. Protected and reserved species (whale shark, sawfishes, manta and devil rays, marine turtles, dugong and the wild Mekong giant catfish) may never be taken under the Wildlife Conservation and Protection Act B.E. 2562 (2019). Area and gear restrictions apply under the Royal Ordinance on Fisheries B.E. 2558 (2015). Always verify current rules with the Department of Fisheries (and the Department of National Parks for protected-area waters) before fishing — FishRadar is not a legal source.
Check Similan Islands Thailand before you go
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Nearby spots
Explore 5 more fishing spots within 601 km of Similan Islands Thailand.
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Andaman Coast
Phuket Andaman Sea
Phuket Andaman Thailand
Koh Samui Gulf of Thailand
Mae Klong River Thailand
Frequently asked questions
What fish can you catch at Similan Islands Thailand?
Anglers at Similan Islands Thailand target Wahoo, Yellowfin Tuna, Indo-Pacific Sailfish and Giant Trevally.
When is the best time to fish Similan Islands Thailand?
The most productive months at Similan Islands Thailand are typically November, December, January, February, March, April.
What is the fishing forecast for Similan Islands Thailand right now?
Similan Islands Thailand currently scores 82 out of 100, based on live ocean and weather conditions — see the full breakdown on this page.
Can you fish Similan Islands Thailand from shore?
Yes — Similan Islands Thailand is fishable from shore (offshore-only).
Is the thermocline set up at Similan Islands Thailand right now?
Not strongly right now — the water column is fairly mixed, so fish are less depth-locked.
How deep is the water at Similan Islands Thailand?
The scored point sits over roughly 16 m of water. Depth shapes which species hold here and how the thermocline forms.
Fishing guides for this spot
- How to Catch Wahoo: Chasing the Ocean's Fastest SprinterHow to Catch Yellowfin Tuna: Chasing the Blue-Water BrawlerHow to Read Tides for Fishing
Forecasts, not guarantees — check local rules before you fish.