March is a great month to visit Koh Lanta — still dry season with warm sunny days and generally calm seas. Temperatures rise compared to January–February, but remain manageable. The whale shark season continues. March is noticeably less crowded than December–February while still offering excellent conditions.
29–34°C
Air temp
29°C
Sea temp
~25mm
Rainfall
High
Crowds
why go
travel tips
March temperatures can be intense midday — plan beach time for morning and late afternoon, rest inside or in shade 12–3pm.
March is the last reliable month for whale shark encounters — book dedicated dive trips early in the month for best odds.
Some accommodation and restaurants begin lowering prices as peak season winds down.
The jungle trails in the national park are at their best in March — lush but not yet wet-season overgrown.
common questions
Yes — March is dry season. Rainfall is minimal (under 25mm for the month on average) and days are predominantly sunny. Some occasional afternoon showers may occur by late March as the monsoon approaches, but rain is uncommon.
March is one of the hotter months — daytime temperatures reach 32–34°C. The heat is intense midday but the sea breeze on the west-coast beaches keeps things bearable. Evenings cool to around 24–26°C. Sea temperature is warm at 28–29°C.
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