This is one of the questions we hear most from people weighing up Thailand, and it deserves a proper answer rather than a vague “whenever you’re ready.”
The short version: April is the best time to start, October is a strong second, and either way you should apply earlier than you think.
Here’s the full picture, including why April comes out on top.
Why the School Calendar Matters More Than the Season
Most people ask this question with the weather in mind. Fair enough, but in Thailand the school calendar does far more to decide when you can actually start. Schools take on new teachers in two main windows a year, April and October, and both are tied to the school holidays.
Thai schools run on two terms, with a long break in the hottest part of the year and a shorter one in October. New teachers arrive around those breaks, which means you’re not dropped into a classroom halfway through a term. Turn up in July hoping to start next week, and you’ll find most schools have already made their hires. That isn’t a red flag about Thailand, it’s just how the year is built.
So the real question isn’t which month has the nicest weather. It’s which intake gives you the best chance of finding a school and location you’ll love, and the best start once you’re there.
April: The Main Intake
April sits at the end of the long summer break, right before the new school year gets going. That timing brings three big advantages.
More vacancies means more options. April is when schools have the most positions open. That means a genuinely wider choice of schools, cities and types of school, from a busy Bangkok classroom to a smaller school in Chiang Rai or Krabi. If you have a preference, whether that’s big city energy, a quieter pace of life, or somewhere near the beach, you have a far better chance of getting it when there are more roles to choose from. October means working with a smaller pool, so some of those options simply won’t be there.
Schools need teachers, so we can plan further ahead. When a school is preparing for a whole new year, it needs its teachers confirmed, and that need works in your favour. Because demand is higher, schools are happy to commit early, which means we can plan further in advance with you. You aren’t waiting on a last minute decision or a hurried offer. You get time to speak to the school, ask your questions, sort your paperwork and book flights without a countdown ticking in the background. For a move to another country, that breathing room matters more than most people realise.
It’s the most natural time to arrive. Because the school is still on holiday when you land, you get a gentle runway before the real work begins. You can find your feet, meet your colleagues and get to know the school while the building is quiet, then start the year alongside everyone else. Classes are fresh, timetables are just settling, and the kids are meeting their teachers for the first time right next to you. That makes it far easier to get into the swing of things with both the children and your colleagues, and you build routines and relationships from day one rather than trying to slot into ones that are already set. If you’ve never taught before, that head start can make a real difference to your confidence in the first few weeks.
Why the Heat Is Actually Part of the Deal
Here’s the honest bit. April is the peak of Thailand’s hot season, and temperatures regularly climb past 40°C, especially in the north and central regions. It’s properly hot, the kind of heat that makes a midday walk feel like a bad idea.
But it’s worth knowing why the long school holiday falls right here. Schools close for the hottest weeks precisely because it’s too hot to run a normal day of lessons. So the timing works in your favour. You arrive during the break, when there are no classes to teach, and you get a few weeks to adjust to the climate, find your favourite air conditioned cafe and settle into your new home before the term begins in the slightly milder weeks that follow. Most teachers find the heat is a short lived shock rather than a lasting problem, and it’s a small price for the widest selection of roles and the smoothest start.
October: The Second Window
October is the other main start date, and it’s a genuinely good option if April doesn’t fit your plans.
It lines up with the shorter break in the school year, as the first term wraps up and the second begins. There are generally fewer positions than in April, so you’ll have a narrower pool of schools to choose from, and the timeline can feel a little tighter. That doesn’t make it a poor choice, it just means being flexible on location helps more than it does in April. If you’re open to a city or region you hadn’t considered, you’ll usually find something that works.
The upside is the weather. The rainy season is winding down, and the cooler, drier months follow soon after, which is when most visitors say Thailand is at its best. If your degree or current job finishes in the summer, October can also give you the time to prepare properly, rather than rushing to be ready for spring.
A Quick Word on the Seasons
For reference, Thailand roughly has three seasons:
- Hot season: around March to May, with 40°C+ common in April
- Rainy season: around June to October
- Cool season: around November to February
The school calendar follows this pattern for a reason. The long break sits in the hottest stretch, and the working terms fall in the more comfortable months. So while you’ll adapt to whichever season you land in, you can see why the holidays and the intakes fit together the way they do.
Working Backwards: When to Apply
This is the part people underestimate. Give yourself three to four months between applying and starting. That covers interviews, paperwork, and getting everything in order before you fly.
In practice, that looks like:
- For an April start: apply by around December or January
- For an October start: apply by around June or July
Because April is the busiest hiring window, applying early puts you at the front of a bigger pool of vacancies, and it gives us the most room to plan with you. Leave it until the last few weeks and you’ll still have options, but fewer of them, and less time to weigh them up.
You’ll need a passport from an eligible country, a university degree in any subject (final year students count too), a clean background check, and a TEFL certificate, which we can help you arrange before you go. No prior teaching experience and no Thai language skills are needed. If any of those pieces aren’t ready, start with them. The TEFL and the background check are the ones that catch people out on timing.
Which Intake Is Right for You?
Aim for April if you want:
- The widest choice of schools and locations
- More time to plan, with schools ready to commit early
- A quiet few weeks at the school to settle in before term, then a fresh start alongside your colleagues and students
Aim for October if:
- Your degree or job finishes in the summer and you want time to prepare
- You’d like to land as the weather cools down
- You’re flexible on where in Thailand you end up
Neither is the wrong answer. They just suit different situations, and the honest answer depends on where you’re starting from.
Already Missed a Window?
Don’t count yourself out. The two intakes are the main rhythm of the year, but it’s always worth asking, because timing can shift from school to school. Get in touch and we’ll tell you honestly what’s realistic rather than promise something we can’t deliver.
So, When Should You Start?
If you want the most choice, the most time to plan, and the most natural introduction to your new school, April is the one to have in your diary. Yes, it’s hot, but the holidays are built around that, and you’ll have time to adjust before you teach a single lesson. If April isn’t possible, October is a solid alternative that still leads to a great year. Whichever you choose, don’t wait. The best options go to the people who start the conversation early.
Ready to Take the Next Step?
Have a look through our Thailand program page for salaries, locations and start dates, or email us at info@impact-teaching.com and we’ll help you work out which intake fits you best. We’d rather talk it through properly than have you guess.
