Surat Thani Thailand · Thailand

Koh Samui Gulf of Thailand fishing forecast

63 Good of 100

Koh Samui Gulf of Thailand is a saltwater fishing spot in Surat Thani Thailand, Thailand. Anglers here target Indo-Pacific Sailfish, Yellowfin Tuna, Mahi-Mahi. The most productive months are typically March, April, May, June, July, August, September, October.

Quick answer
Best monthsMarch, April, May, June
Top speciesIndo-Pacific Sailfish, Yellowfin Tuna, Mahi-Mahi
Score now63/100
Local rulesThailand
Pressure trend
Pressure stable — fish feeding on their usual rhythm
Next solunar peak
major 22:37

Current conditions

Sea surface temp30.9 °C
Wind16 km/h from SW
Wave height0.3 m at 3 s
Current0.08 m/s toward N
Pressure1010 hPa
Cloud cover100%

Last updated Jul 4, 2026 (UTC). Conditions refresh through the day.

What the score means at Koh Samui Gulf of Thailand

Koh Samui Gulf of Thailand currently scores 63 out of 100 (Good). Water temperature is 30.9 °C. 8 forecast signals are active in this score. As a rough guide, a score above ~65 reflects conditions experienced anglers would typically fish; below ~45, consider waiting for a better window or targeting different species. The score blends live weather and ocean signals and can change through the day.

Bite windows

Moon
Waning Gibbous · 76% lit
Solunar day rating
50 / 100

Best months for Koh Samui Gulf of Thailand:

JanFebMarAprMayJunJulAugSepOctNovDec

About this spot

Water type
Gulf

Gulfs are partly enclosed and typically calmer and more protected than the open ocean, which can extend fishable conditions in wind.

What you can catch

Best months by species at Koh Samui Gulf of Thailand

Indo-Pacific SailfishIstiophorus platypterus
Yellowfin TunaThunnus albacares
Mahi-MahiCoryphaena hippurus

Months reflect typical catchability by species at this latitude; local seasons and closures apply.

Local regulations

Thailand

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).

Check Koh Samui Gulf of Thailand before you go

Live scores update through the day. Get the full forecast, bite windows, and your own saved spots in the FishRadar app.

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Nearby spots

Explore 5 more fishing spots within 276 km of Koh Samui Gulf of Thailand.

Frequently asked questions

What fish can you catch at Koh Samui Gulf of Thailand?

Anglers at Koh Samui Gulf of Thailand target Indo-Pacific Sailfish, Yellowfin Tuna and Mahi-Mahi.

When is the best time to fish Koh Samui Gulf of Thailand?

The most productive months at Koh Samui Gulf of Thailand are typically March, April, May, June, July, August, September, October.

What is the fishing forecast for Koh Samui Gulf of Thailand right now?

Koh Samui Gulf of Thailand currently scores 63 out of 100, based on live ocean and weather conditions — see the full breakdown on this page.

Do you need a licence to fish Koh Samui Gulf of Thailand?

Fishing at Koh Samui Gulf of Thailand follows the local rules for Surat Thani Thailand, Thailand. Bag limits, size limits, seasons and licence requirements are summarised in the Local regulations section above, with a link to the official authority.

Fishing guides for this spot

Scores and conditions are forecasts for guidance only and can change rapidly. Always check local rules and current conditions, follow all fishing regulations, and prioritise your safety on the water.