Thailand weather by month

Pick the right month.

Thailand isn't one weather pattern — it's five regional ones running on slightly different calendars. Each month page tells you which region works, which to skip, and what cultural events are worth planning around.

Interactive climate map When's the best time to visit?

January

Thailand in January

Peak cool-season weather — easily the most reliable month to visit if you can stomach the crowds.

Best: NorthSkip: Koh Samui and the Gulf

February

Thailand in February

Still excellent weather across most of the country — but burning season is starting up north.

Best: AndamanSkip: Long stays in Chiang Mai

March

Thailand in March

Hot season begins. The Andaman coast is still excellent; the north is at its worst for air quality.

Best: AndamanSkip: Chiang Mai and the far north — AQI peaks this month

April

Thailand in April

Hottest month of the year, but Songkran makes it unforgettable.

Best: GulfSkip: Long hot-day sightseeing in Bangkok or Isaan

May

Thailand in May

Southwest monsoon arrives — short, dramatic storms break the heat but soak the Andaman coast.

Best: GulfSkip: Diving on the Andaman side — visibility drops

June

Thailand in June

Green season hits its stride. Storms are predictable, prices are low, the country looks alive.

Best: GulfSkip: Andaman coast for diving and snorkeling

July

Thailand in July

Buddhist Lent begins. The north and Gulf are still excellent — the Andaman coast is wet.

Best: GulfSkip: Andaman dive trips

August

Thailand in August

European summer holiday hits Thailand. Wet on the west coast, drier on the east, busy everywhere.

Best: GulfSkip: Phuket and Krabi on a tight budget — you'll pay peak prices for monsoon weather

September

Thailand in September

Wettest month of the year. Genuine planning challenges — but also the lowest prices.

Best: GulfSkip: Tight beach itineraries — expect rain days

October

Thailand in October

Transition month. Andaman dries out late in the month; Gulf starts to flip wet.

Best: NorthSkip: Koh Samui — the Gulf's monsoon is starting

November

Thailand in November

One of Thailand's two best months. Loy Krathong and Yi Peng make it unforgettable.

Best: NorthSkip: Koh Samui — Gulf monsoon is at its peak

December

Thailand in December

Peak season. Excellent weather almost everywhere — but crowded and expensive.

Best: NorthSkip: Last-minute bookings — book months ahead

At a glance — every region, every month.

Visit ratings only. Tap any month for the full regional breakdown, spotlight cities, and event calendar.

Month	North	Northeast	Central	Andaman	Gulf
January	Great	Great	Great	Great	Great
February	AQI watch	Great	Great	Great	Great
March	AQI watch	AQI watch	Great	Great	Great
April	AQI watch	AQI watch	Good	Great	Great
May	Great	Good	Good	Good	Great
June	Great	Good	Great	Good	Great
July	Great	Good	Great	Good	Great
August	Good	Good	Good	Good	Great
September	Good	Good	Mixed	Good	Great
October	Great	Great	Good	Good	Good
November	Great	Great	Great	Good	Good
December	Great	Great	Great	Great	Good