There are months in Thailand's fishing calendar that require caveats — plan around the monsoon, watch the weather, manage expectations. November is not one of those months. The cool-dry season has arrived. The Andaman Sea is running full operations. Sailfish are stacking up on the shelf north of Khao Lak. Bangkok's mornings are the most pleasant they've been since February. Northern reservoirs are full and clear. Whatever type of fishing you came to Thailand for, November can almost certainly deliver it.
The Weather and Water This Month
November marks the full establishment of Thailand's cool-dry season in central and northern regions. Bangkok daytime temperatures ease to 28–31°C — warm by most standards, but a significant drop from the 34–35°C highs of monsoon peak. More importantly, humidity falls sharply. The air is lighter, clearer, and the constant threat of afternoon thunderstorms retreats to occasional brief showers rather than daily deluges.
Nights in Bangkok can drop to 22–24°C. In Chiang Mai and the north, expect evenings of 15–18°C, with some nights dipping lower by month's end. Long-sleeved layers for early morning boat departures in the north become genuinely necessary.
Rainfall for the month is low across most of the country — typically 30–50mm in Bangkok, and less in the north. The exception is the Gulf coast: Koh Samui and the northeast Gulf face the beginning of their own wet season as the northeast monsoon delivers significant rainfall to the peninsula's eastern shore through November and December. The Gulf of Thailand's west coast — Hua Hin and the inner Gulf — is largely clear.
The Andaman Sea is in excellent condition through November. Seas are calm, winds are light and from the northeast, and visibility underwater is building toward its January–February peak. The Marine National Parks are fully open and operating. Offshore fishing conditions are as reliable as any month of the year.
Koh Samui's wet season
While the Andaman thrives in November, the northeast Gulf coast — particularly Koh Samui and Koh Phangan — enters its wettest month of the year. Plan Gulf saltwater trips around Pattaya or Hua Hin rather than Samui in November. The island's weather typically improves in January.
Freshwater Fishing This Month
Bangkok Pay-Lakes: Peak Comfort
November is the best month to fish Bangkok's pay-lake circuit for sheer comfort. The oppressive heat and humidity that define June through September are replaced by warm, breezy mornings and pleasant afternoons. A full-day session — 6 a.m. to 3 p.m. — is no longer a test of endurance but a genuinely enjoyable day out.
Bungsamran Lake is at its finest. The November fishing is consistent and strong: giant Mekong catfish and giant Siamese carp are active across all depth ranges, and the cooler water means fish fight harder and tire less quickly. Full-day sessions with a mix of float fishing, running ledger, and light surface work all produce.
IT Lake Monsters fills up faster in November than in any month since April as the overseas fishing tour groups begin arriving. Book specific pegs in advance if you have a preference. The arapaima and pacu fishing is outstanding, and the cooler weather makes the covered pegs along the east bank even more appealing for all-day sessions.
Palm Tree Lagoon, Exotic Fishing Thailand, and Pilot 111 are all in excellent form. The variety across Bangkok's pay-lake circuit is one of the reasons November is a strong month for visiting anglers — you can design a four- to five-day itinerary around multiple venues and species and fill every session.
November is also a good month for pay-lake etiquette if you're visiting for the first time. Venues are busy enough that observing proper protocol — keeping noise down, not crossing lines, respecting the staff — matters more than in the quiet months.
Northern Reservoirs: Full and Clear
The northern reservoir scene peaks in November. Lakes and reservoirs around Chiang Mai and Chiang Rai are full from the monsoon but have had October to begin clearing. Water temperatures are in the optimal range for most species. Fishing pressure, while higher than the wet season, has not yet reached the peak it will see in December and January.
Mahseer in the northern rivers and streams are in outstanding form through November. The rivers have continued dropping and clearing since October, and the fish are well-distributed between holding pools and active feeding runs. Fly fishing with tropical fly setups and specific mahseer patterns is as productive in November as any month of the year.
Greenfield Valley Resort is a reliable base for northern fishing. The managed lakes are well-stocked and the team can arrange guided wild-river sessions. Gillhams Fishing Resort in Krabi is also in peak form — the combination of managed lake fishing and the now-fully-operational Andaman coast makes a Krabi trip in November one of the most well-rounded fishing holidays available in Thailand.
November in Thailand is what the whole year has been pointing toward — the month when every decision you make is the right one.
Saltwater Fishing This Month
Andaman Sea: Full Operation
The Andaman in November is operating at full capacity. Every category of fishing available on the sea is accessible, productive, and — compared to January and February — still running at shoulder-to-peak pricing before the Christmas holiday surge arrives.
Sailfish are the headliner. November sees the sailfish season building toward its December–January peak. Boats departing from Khao Lak are consistently finding fish on the offshore shelf north of the Similans, and multiple-fish days — two, three, four sailfish per boat — are realistic on the right days. The sailfish season Thailand guide details the boats, departure points, and what to expect on a typical charter. Koh Rok sailfish offers an alternative southern Andaman angle with different boat access and its own productive grounds.
GT popping is fully open. The Similan Islands, Surin Islands, and outer reef systems are producing large giant trevally on topwater poppers and stickbaits. November's clear water and settled conditions make popping on the outer reef edge particularly productive — fish can see surface presentations at distance and commit hard. The GT popping tackle guide is essential preparation.
Liveaboard fishing is in full swing. Phuket and Khao Lak-based liveaboards are running three- to five-night trips to the Similan Islands and beyond. November liveaboards offer a compelling combination of open fishing grounds, settled weather, and pre-Christmas pricing. The full diversity of Andaman species — GT, yellowfin tuna, dogtooth tuna, reef species, sailfish on longer trips — is available.
Deep-water jigging on the outer Andaman banks — the Burma Banks and offshore pinnacles north of the Similans — is producing amberjack, dogtooth tuna, and Spanish mackerel through November. Day trips or liveaboard-incorporated jigging sessions are both viable.
Racha Yai and Racha Noi, accessible on half-day trips from Phuket's Chalong Bay, are productive for popping and jigging and a useful option for anglers based in Phuket who want flexibility.
Gulf of Thailand
The Gulf situation in November is mixed. The northeast coast — Koh Samui, Koh Phangan — is in its wet period. Inner Gulf sites around Pattaya, Hua Hin, and the eastern Gulf are more consistent. Barramundi in tidal channels and reef spinning are the reliable standbys for Gulf anglers in November. The Gulf of Thailand fishing guide sets realistic expectations.
Recommended Trips
1. Khao Lak Sailfish Week. Five to six days at Khao Lak targeting sailfish on the northern Andaman shelf. November is the best value month for this style of fishing before Christmas prices take hold. Sailfish season Thailand has everything you need to plan this trip.
2. Similan Liveaboard: GT and Tuna. A four-night liveaboard out of Phuket or Khao Lak. Full access to Similan Islands popping and jigging grounds. November is peak season and peak conditions.
3. Bangkok Pay-Lake Grand Tour. Four or five days across Bungsamran, IT Lake Monsters, Palm Tree Lagoon, and Exotic Fishing Thailand. Book venues in advance. The most comfortable time of year for Bangkok fishing.
4. Northern Mahseer and Reservoir Combo. Four days around Chiang Mai — wild river mahseer with a guide for two days, managed lake at Greenfield Valley Resort for two. Cool evenings, green highland scenery, outstanding fishing.
What to Avoid This Month
Book well in advance. November is when popular venues — flagship Bangkok lakes, top Andaman charter boats, quality liveaboards — start filling up with Christmas and New Year visitors making advance reservations. Walking in without a booking to Bungsamran or a top Khao Lak sailfish operation on a weekend in November is increasingly likely to result in disappointment.
Avoid Koh Samui for saltwater fishing in November unless you have a specific inshore objective and a flexible schedule. The northeast monsoon rain on the east coast is real and persistent.
Comfort and Gear Notes
November is Thailand's most comfortable fishing month in terms of climate. Lightweight technical clothing remains the right choice — you will warm up on the water — but pack a thin fleece or light jacket for early morning boat departures, particularly in the north. On the Andaman, sun protection is as important as ever; clear skies mean direct UV exposure all day.
For sailfish trips, the GT popping tackle guide and the saltwater jigging setup guides are worth reviewing. Flying with fishing tackle to Thailand has specific airline and customs advice for bringing your own big-game gear.
Where to Go Next
December continues everything November offers — peak Andaman conditions, cool Bangkok, strong northern fishing — with the addition of Christmas and New Year crowds that require earlier booking and more patience with busy venues. Read ahead to manage expectations.
For broader planning context, the best time to fish in Thailand guide situates November within the full annual calendar and compares it against January and February, which also compete for top-month honours. And for the month that set the stage, revisit October.
