October opens with the Phuket Vegetarian Festival (October 19–28), nine days of street processions and Chinese shrine rituals that are as intense as they are photogenic — this is a genuine religious observance, not a tourist show, so dress modestly and be respectful around temples and processions. Around the same time, the Chak Phra Festival in Surat Thani (October 27–29) sees Buddha images pulled through the streets and along the Tapi River on decorated barges.
If large-scale religious festivals aren't your thing, late October also brings bigger music and nightlife events to Bangkok in the same window — a genuinely different kind of 'festival' if that's more your speed.
Moving into November, the Surin Elephant Round-Up (November 19–21) is one of the region's biggest and most talked-about cultural events, with processions and shows — it's also a event some travelers have mixed feelings about regarding elephant welfare, worth researching before deciding whether to attend. Separately, Udon Thani hosts the AIPH International Horticultural Expo from November 2026 through March 2027, a long-running expo worth knowing about if you're passing through Isaan during that stretch.
The big one for most visitors is Loy Krathong (November 24), when small floating baskets (krathong) are set adrift on rivers and canals nationwide — it happens everywhere in the country, not just one city. Chiang Mai adds its own companion event, the Yi Peng Lantern Festival (November 24–25), where sky lanterns are released — these are two related but distinct events that first-time visitors often mix up.
If Loy Krathong or Yi Peng in Chiang Mai is the plan, book accommodation early: hotel prices spike hard and rooms sell out months ahead of the actual week.