Koh Lanta · Month comparison

June vs March

March ranks #1 overall vs June at #7. Still excellent — dry season holds, crowds ease, prices begin to soften.

Koh Lanta June — empty Thai beach under heavy monsoon cloud with overcast sea

June

#7 of 12 months

Worth considering

Deep monsoon — most resorts closed, beaches empty, 195mm and heavy seas.

  • Absolute lowest prices of the year for whatever accommodation remains open
  • The island in low season has an eerie, deserted beauty that some travellers specifically seek out
Koh Lanta March — sunny beach in Ko Lanta with traditional wooden boats on golden sand

March

#1 of 12 months

Best match

Still excellent — dry season holds, crowds ease, prices begin to soften.

  • 45mm rainfall remains very dry — weather still overwhelmingly reliable and sunny
  • High season crowds thinning as European winter holidays end, making beaches more enjoyable
FactorJuneMarch
Weather score
3
9
Value score
8
5
Crowd score
9
5
Events score
3
5
Atmosphere
5
8
Avg high temp31°C33°C
Monthly rain195mm45mm
Daily sunshine5.5hrs9hrs

June trade-offs

  • 195mm: persistent heavy rainfall with very little reliable sunshine
  • The majority of Kantiang Bay and Klong Nin operations now fully closed until November
  • Andaman Sea too rough for any meaningful water activities — diving suspended entirely

March trade-offs

  • Temperatures hitting 33°C by midday — less comfortable for active days than Feb
  • Some early monsoon showers possible in the last week as the Andaman begins to stir
  • Sea still calm but visibility at diving sites marginally less crystal than February
Scores compare months within Koh Lanta. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →