Best time to visit Thailand from India: November to February for Bangkok & Central and North; December to March for Andaman coast. Avoid if you can: Bangkok & Central: September; Andaman coast: May to October; North: August to September.
✓ Best most reliable weather · ~ Okay visitable, with trade-offs · ✕ Avoid monsoon, storms, heat or disruption (often cheaper). The split between best and okay is editorial guidance based on the met-service and tourism-board sources below.
Region by region
Bangkok & CentralBest: Nov-Feb. Okay: Mar-Aug, Oct. Avoid: Sep (wettest month in our 2016-2025 data, 254 mm).TMD: cool season mid-Oct to mid-Feb under the dry NE monsoon; hot season mid-Feb to mid-May (Apr avg high 35 C in our data); rainy season mid-May to mid-Oct.
Andaman coast (Phuket, Krabi)Best: Dec-Mar. Okay: Apr, Nov. Avoid: May-Oct (SW monsoon; 248-340 mm/month in our data).TMD: SW monsoon (mid-May to mid-Oct) is rainier on coasts and mountain ranges; Phuket driest Jan-Mar in our data.
North (Chiang Mai)Best: Nov-Feb. Okay: Mar-Jul, Oct. Avoid: Aug-Sep (wettest, 232-244 mm).TMD: north and northeast turn 'quite cool' in the NE monsoon; Apr is hottest (avg high 36 C in our data).
Gulf islands (Koh Samui) differ: TMD says the south, especially the east side, stays rainy into December. Songkran (13-15 Apr) is Thai New Year [check TAT for events].
Peak periods
Diwali 8 NovDiwali (8 Nov 2026)Short-haul international fares spike; Dubai and Singapore routes 'commanding premium fares' and outbound sales to Dubai, Bali, Bangkok, Singapore, Vietnam up 30-40% vs Diwali 2024 (Moneycontrol, Oct 2025, quoting OTAs)
School holsIndian school holidays (mid-May to June)Family travel peak from India. Clashes with SW monsoon in Sri Lanka west coast, Maldives, Andaman coast of Thailand, Nepal, Bhutan; and with heat in UAE. Good fit for Bali, east-coast Sri Lanka, Singapore, Vietnam's central coast.
Xmas–NYChristmas–New Year(Editorial estimate) Global peak; overlaps Dubai Shopping Festival and Japan's New Year closures.
ThailandDiwali and Christmas-New Year fall in Thailand's best season, so expect peak pricing (see india_peak_periods).
Weather data by Open-Meteo.com, licensed CC BY 4.0. Climate averages are 2016–2025 ERA5 / ERA5-Land reanalysis (Copernicus Climate Change Service, ECMWF), processed by India Outbound Travel News. These are not official WMO normals; where a met service publishes station figures, the charts use them instead, as labelled.
The Tourism Authority of Thailand is co-hosting the Global Wellness Summit 2026 at Angsana Laguna Phuket from 10 to 13 November and will promote wellness routes across Thailand's five regions under its 'Healing is the New Luxury' theme.
The Amazing Thailand Grand Diwali Festival 2026 brings seven free celebrations to Bangkok, Pattaya and Phuket from 3 to 29 November, with five diya-lighting ceremonies, Bollywood music, Indian food and festive markets.
TAT says 1,896,058 Indians visited Thailand from 1 January to 26 October 2026. It counts 11 airlines and 427 weekly India–Thailand flights in October, and plans more promotion in India's smaller cities.
TAT's November 2026 calendar lists 12 events, including the Pattaya International Jazz Festival (6–7 Nov), the Pattaya International Fireworks Festival (27–28 Nov) and the Udon Thani horticultural expo running to March 2027.
The Tourism Authority of Thailand has named wellness and longevity, festivals, creative experiences, sustainable travel and trusted standards as its five product priorities for 2027.
The fifth Bangkok Art Biennale, themed "Angels & Mara", shows more than 200 artworks by 72 artists across 11 Bangkok venues from 29 October 2026 to 28 February 2027.
IndiGo's Guwahati–Bangkok and Air India Express's Visakhapatnam–Bangkok services both started on 27 October 2026, the airports confirmed. Cyclone Arnab may disrupt Visakhapatnam flights on 27–28 October.
IndiGo's non-stop Gaya–Bangkok service was flagged off on 26 October 2026. The twice-weekly route links the Bodh Gaya Buddhist circuit directly with Thailand.
The Tourism Authority of Thailand took 14 Thai businesses to ITB Asia 2026 under the theme 'Healing is the New Luxury'. Its 2027 '4 NEWs' approach will guide marketing across ASEAN, South Asia and the South Pacific.
The northern winter schedule starts on 25 October. IndiGo opens Mumbai–Hanoi, Gaya–Bangkok and Guwahati–Bangkok, AirAsia returns to Ahmedabad, Air India starts Mumbai–Toronto and SWISS's first Zurich–Bengaluru flight leaves on 27 October.
TAT has added an illuminated boat, 800-drone displays and riverside workshops to the 2026 Nakhon Phanom Illuminated Boat Procession, running 22 to 27 October, with the finale on 26 October.
TAT says the Similan Islands reopened on 15 October after the monsoon closure, and Maya Bay on Ko Phi Phi Le reopened on 1 October. Six marine national parks use electronic tickets, so buy them in advance and carry your passport.
Three new IndiGo international routes begin with the winter schedule: daily Mumbai–Hanoi from 25 Oct, twice-weekly Gaya–Bangkok from 26 Oct and Guwahati–Bangkok from 27 Oct. IndiGo says the schedules are subject to regulatory approvals.
TAT has launched the third ASEAN India+ Shoppers in Thailand campaign, running September to November 2026. Indian visitors can register online for shopping, dining and hotel privileges from more than 50 partners.
IndiGo revised fuel charges for bookings from 6 October; Air India and Air India Express followed from 9 October. IndiGo now adds ₹5,500 one way on Southeast Asia and Gulf routes; Air India lists USD 55 for West Asia.
AirAsia resumes Kuala Lumpur–Ahmedabad on 25 October and Kuala Lumpur–Amritsar on 2 December. Thai AirAsia restores six Don Mueang–India routes between 25 October and 17 November, including Gaya, Guwahati and Jaipur.
Thailand's visa exemption for Indian ordinary passport holders is now 30 days for tourism, effective 15 September 2026. IndiGo starts Guwahati–Bangkok on 27 October and Gaya–Bangkok on 26 October.
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