School holidays: matching the Indian calendar to Thailand.

Three windows, and nothing else

Across the major Indian boards and the international schools that most of our clients use, the family travel year reduces to three usable windows. The long summer break, which runs from roughly the middle of May through the end of June in most of the country and is longer in the north where the heat closes schools earlier. The autumn festival break around Dussehra and Diwali, typically ten days to a fortnight falling in October or November depending on the year. And the winter break around Christmas and New Year, usually the last ten days of December into the first days of January, which is short but sits in the best weather of the Thai year.

Everything else is a long weekend. Exact dates vary by board, by city and by school, and the international schools follow a different rhythm from CBSE and the state boards, with a genuine autumn half term and a longer winter break. Families with children in two systems, which is common, lose several usable weeks to the mismatch. The practical instruction is to get the published school calendar in hand before booking anything, because the difference between the last week of May and the first week of June is, in Thai terms, the difference between two different countries.

May and June: the monsoon question

The Indian summer break is the longest window and the most misunderstood. It lands squarely in the south-west monsoon, which on Thailand's Andaman coast runs roughly from May to October. In practice that means Phuket, Krabi and Khao Lak see heavy showers, grey stretches and, more importantly, genuinely rough seas with red flags on the west-facing beaches. Rip currents in these months are the leading cause of visitor drownings in Phuket, and a family with teenagers who want to swim should treat that as a hard planning constraint rather than a caveat.

The answer is not to avoid Thailand in the summer break. It is to move to the other side of the country. The Gulf coast, Hua Hin and Pranburi within a comfortable drive of Bangkok, and Koh Samui, Koh Phangan and the Gulf islands further south, runs on the opposite calendar and is frequently at its most pleasant precisely when the Andaman side is churning. Bangkok itself is perfectly workable in these months, with rain that tends to arrive in heavy afternoon bursts rather than all day. And the prices in May and June are the best of the year: the Phuket villas that command extraordinary tariffs in December are half the price, which is a real proposition for a family whose priority is the villa rather than the beach.

The Diwali break: the sweet spot nobody books early enough

The autumn festival break is, on the weather alone, the best of the three windows for the Andaman coast. By late October and into November the south-west monsoon is retreating from Phuket, the sea calms, the skies clear, and the crowds and prices of the December peak have not yet arrived. Loy Krathong, the festival of floating lanterns, usually falls in November and is genuinely lovely, particularly on the river in Bangkok and in Chiang Mai. It is the window our office recommends most often to families who have flexibility within it.

The complications are two. First, it is short, and it competes with family obligations at home, since many households will not travel over Diwali itself and will fly either side of it. Second, it is the leading edge of the Indian wedding season, which runs from November to February and overlaps precisely with Thai high season, so flights out of the Indian metros in this period fill early and price accordingly. Families who book the Diwali window in July get a very good trip; families who book it in September pay for the privilege. The Gulf side is the one place to be careful in this window, since October to December is the wettest stretch on the Samui side of the country.

December: the peak, honestly priced

The winter break sits in the finest weather Thailand has: dry, clear, cooler in Bangkok and in the north, and calm on the Andaman sea. It is also the single most expensive fortnight of the Thai year, and Christmas week and New Year in particular carry minimum-stay requirements of five to ten nights at the good resorts, compulsory gala dinner charges on the twenty-fourth and thirty-first, and rates that can run at two or three times the shoulder season. The best Phuket villas and the river suites in Bangkok are gone six months ahead, and by October a family is choosing from what is left rather than what it wanted.

Two adjustments help. Travelling in the first half of December, before the peak surcharge window opens, gives near-identical weather at a very different price, and works for families whose school calendar allows an early start. And in the peak fortnight itself, Hua Hin and Chiang Mai absorb demand better than Phuket does, with deeper room stock and a shorter, simpler journey. Chiang Mai in late December is genuinely cool in the mornings, which Indian families from the north find unexpectedly pleasant and families from Chennai find astonishing.

The windows in one table

How we plan around a fixed date

• Get the school calendar in writing before anything is booked, and reconcile it across siblings in different systems.
• Book flights first in the Diwali and December windows; the seats out of the Indian metros constrain everything else.
• Choose the coast by the calendar rather than by reputation: the Gulf in the summer break, the Andaman in the autumn and winter.
• For December, commit six months ahead or accept the second choice; there is no third option at the top of the market.
• Where a family has any flexibility, the first half of December and the second half of January are the two best value weeks in the Thai year.

One last piece of arithmetic that families find useful. Thailand's high season and the Indian wedding season are the same months, which means that a family travelling in November or December is competing for flights, hotels and villas with the destination wedding market as well as with the rest of Asia. If the trip is a holiday rather than a wedding, moving it to the first week of the summer break or the second half of January will buy a materially better property for the same money, and the weather penalty on the correct coast is smaller than the brochures imply.

School calendars, monsoon timing and resort peak-season policies all vary year to year. Confirm holiday dates with the school, check current seasonal conditions and festival dates with the Tourism Authority of Thailand, and confirm minimum stays and gala dinner charges with each property before committing to peak dates.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.