Loy Krathong — the Festival of Lights — is one of Thailand's most beautiful celebrations. Thais float small decorated lotus-shaped vessels (krathong) on rivers, lakes, and canals by the thousands, releasing sky lanterns (khom loi) in the north, and gathering at waterways across the country on the full moon night of November.
For anglers, it creates one of the more interesting seasonal fishing windows of the year: a genuine full-moon night-fishing opportunity in the middle of the cool season, with predatory fish in excellent condition after the monsoon and water temperatures dropping toward their most productive range.
The challenge is navigating where the festival makes fishing impossible versus where it actually enhances the experience — and getting the logistics right in a country where millions of people are simultaneously trying to reach the water.
Why the November Full Moon Matters for Fishing
The full moon's influence on fish behaviour is well-established in saltwater fishing and increasingly recognised in Thailand's freshwater contexts. The key mechanisms:
Increased ambient light: A full moon on a clear November night in Thailand provides enough ambient light for predatory fish to hunt effectively without cover. Barramundi and giant snakehead, both visual hunters, become significantly more active after dark during full-moon periods.
Tidal influence on river fish: Even far inland, the gravitational pull during full and new moons affects water movement in connected river systems. Barramundi in the Mae Klong, Bang Pakong, and Pranburi rivers show feeding patterns consistent with tidal influence even where no obvious tidal movement is visible.
Post-monsoon fish condition: By early to mid-November, Thailand's monsoon season is winding down or already finished in most regions. Fish that have been well-fed through the high-water season are in peak condition — heavy, aggressive, and willing to take large lures.
Water temperature sweet spot: November marks the beginning of the cool season. Water temperatures drop toward 25–27°C in most freshwater systems, which is close to the optimal temperature for active feeding in barramundi, snakehead, and many catfish species.
Plan for the dark hours
The most productive window during Loy Krathong full moon is 9pm to 2am — after the main festival activity has peaked and the light is at its brightest. Fishing from 6pm onward at a lake venue, then continuing through the festival night, captures both the excitement of Loy Krathong in the background and the best night-fishing window.
Where Krathong Float and Fishing Doesn't Work
On the festival night itself, certain waterways become genuinely unfishable — not because fish are spooked (though some are), but because the density of krathong and people makes casting impossible or dangerous.
Chao Phraya River, Bangkok: The main river through Bangkok becomes a procession of krathong from Nonthaburi to the Gulf. Landing a cast without hooking a krathong is effectively impossible in the main channel on festival night. Bank fishing along Chao Phraya on November full moon night: do not attempt it.
Ping River, Chiang Mai: The old city moat and the Ping River through Chiang Mai host one of the most spectacular Loy Krathong celebrations in the country. The riverbank is wall-to-wall with people from 6pm onwards. Night fishing here is impossible and would be deeply unwelcome.
Nan River, Phitsanulok: Another major celebration site with heavy river use on festival night.
Urban canals (Bangkok khlongs): The decorated canals of inner Bangkok are used for krathong floating and are lit up with festival lighting. Night lure fishing in urban Bangkok khlongs on Loy Krathong night is impractical and socially inappropriate.
Where Night Fishing Still Works — and Works Well
The key insight is that most of Thailand's fishing waters are not major festival destinations. Pay-lakes, reservoirs, and rural river sections continue operating normally.
Bungsamran and IT Lake Monsters (Bangkok): Both venues run 24-hour operations and are explicitly not festival destinations. The full-moon night at these lakes is actually one of the best fishing nights of the year. Local Thai anglers know this — book a night session in advance as pegs fill up.
Palm Tree Lagoon (Ratchaburi): Away from the Chao Phraya and Bangkok's festival crowds. The lake is accessible from Bangkok with a two-hour drive — leave in the early afternoon on festival day to beat the outbound evening traffic. Night sessions under the Ratchaburi sky with a full moon over the lake are genuinely special.
Gillham's (Krabi): Krabi's Loy Krathong celebrations are modest. The resort lake is unaffected. The barramundi at Gillham's are active at night year-round, and the full-moon November window is one of the best times to fish after dark.
Bang Pakong River (Chachoengsao): The lower Bang Pakong is a productive barramundi river and sees minimal Loy Krathong activity away from the town centre. A boat session from dusk until midnight targeting barramundi under the full moon is a genuine experience — hire a local longtail captain from Chachoengsao.
The full-moon nights around Loy Krathong are some of the finest night-fishing windows in the Thai fishing calendar — barramundi and snakehead hunt aggressively in the bright ambient light, and surface lures produce strikes that will stay with you for years.
Barramundi Night Tactics for the Full Moon
Barramundi in Thailand's pay-lakes and connected river systems show peak surface activity in the two-to-three-hour window after sunset when water temperatures drop slightly. During the full moon, this window extends through the night.
Surface lures first: Start with poppers and prop baits. The noise and surface disturbance is important in the early dark hours when fish are in hunting mode. Work them slowly — much slower than you think is needed. Thai barramundi often follow a surface lure for several metres before committing.
Walk-the-dog stickbaits: Once surface activity begins to reduce (usually after midnight), switch to walk-the-dog lures that can be worked just below the surface film. These cover more water and find fish that have moved slightly deeper as the night progresses.
Leader weight: Use fluorocarbon of at least 30–40lb for barramundi night fishing. The combination of darkness, hard strikes, and structure (both natural and cage infrastructure at pay-lakes) creates a high break-off risk on lighter leader.
Snakehead Night Fishing During Loy Krathong
Giant snakehead and striped snakehead are the other major nighttime targets during the November full moon period. These species are highly territorial and aggressive, particularly during spawning periods that can overlap with the November–December window.
Location: Snakehead hold in shallow water with vegetation — lily pads, hyacinth, reeds, and submerged structure. In reservoirs (Khao Sam Roi Yot, Khao Laem), they move into the shallow flooded margins during full-moon nights.
Frog and rat lures: Hollow-body frog lures worked over vegetation are the classic approach. The full-moon brightness actually helps you track the lure and time the hook-set — a significant practical advantage over dark-moon sessions.
Sound discipline: Snakehead are more noise-sensitive than barramundi. Keep voice levels low, avoid dropping tackle on the boat or bank, and approach fishing locations quietly.
Festival-Week Traffic and Logistics
Loy Krathong creates significant traffic around the festival evening itself (the full-moon night) and the following day.
Festival evening (full moon night): Traffic toward major rivers and city centres builds from about 4pm and peaks around 7–9pm as people travel to watch the festivities. If you are driving away from cities (toward your fishing venue), you will likely be going against the traffic — this works in your favour.
Post-festival (morning after): Roads are generally quiet. This is the ideal time to drive back if you have done an overnight session.
Accommodation: If you plan to fish the full-moon night and drive back the next morning, booking in advance is critical — Loy Krathong is a public holiday and accommodation near major festival sites fills weeks ahead. Venue-adjacent accommodation (Gillham's, Topcats, or private guesthouses near the lake) is the practical solution.
The Loy Krathong fishing window is one of the most overlooked seasons in Thai angling. Most anglers either attend the festival or go fishing — very few think to combine both. The angler who fishes from 6pm on the festival night through to dawn has one of the best nights of the Thai fishing year waiting for them.
