Best time to visit
Thailand in June
Koh Samui at 85mm is drier than Bangkok. That one line is the whole argument for the Gulf in the northern summer, and the Andaman is taking three times the rain in the same week.
Measured, not repeated
Where it rains in June, and how much
Driest first. Koh Samui takes 85mm this month and Krabi takes 241mm, which is 3 times as much. The strip on the right is that place's whole year, with June outlined, so you can see whether this is a good month for it or merely a bad one everywhere.
- Koh Samui 85mm 18 rain days
- Bangkok 133mm 23 rain days
- Chiang Mai 145mm 20 rain days
- Thailand's islands 221mm 22 rain days
- Phuket 240mm 22 rain days
- Krabi 241mm 24 rain days
ERA5 reanalysis, 1995 to 2024, averaged per calendar month at each place's own coordinates. A rain day is a day with a millimetre or more.
Phuket 240mm, Krabi 241mm, the islands 221mm. Koh Samui 85mm, which is its third driest month of the year and lower than anywhere else on this site except in the deep dry season.
Bangkok at 133mm and twenty-three rain days is wetter than the island most people think of as the wet-season gamble. Chiang Mai at 145mm has started its own rains and will get considerably wetter before it improves.
June is the clearest month of the year for advice, because there is only one: if you are coming to Thailand between May and September and you want the sea, the Gulf islands are not a compromise. They are the dry side.
Where to go in June
The three driest places on this site this month, in order.