Average monthly rain per weather station; the bar runs from 0 to 1024 mm (the wettest month in this overview). Colour = our score for that region.
Andaman Sea: Similan, Surin and Koh Rok (marine parks)
Goodπ calm sea
Relatively dry: Phuket (Mueang) 24 mm on 3.1 rainy days (monthly average). Sea: sea mostly calm. Parks are open (season 15 October-15 May).
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, nationthailand.com, siamtourandrealty.com
Andaman Sea: Phuket, Phang Nga, Krabi
Goodπ calm sea
- Phuket (Mueang)24 mm
- Krabi43 mm
Relatively dry: Phuket (Mueang) 24 mm on 3.1 rainy days; Krabi 43 mm on 4.5 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Andaman Sea: Ranong (Koh Phayam)
Goodπ calm sea
Relatively dry: Ranong 20 mm on 2.4 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Southern Andaman: Trang and Satun (Koh Lipe)
Goodπ calm sea
Relatively dry: Satun 41 mm on 3.5 rainy days (monthly average). Sea: sea mostly calm. High-season boat schedule from Pak Bara (from 1 Nov or 16 Oct, depending on operator).
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, thainationalparks.com, ploysiamspeedboat.com
Gulf: Koh Samui, Koh Phangan, Koh Tao
Goodπ calm sea
Relatively dry: Ko Samui 64 mm on 4.3 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Gulf: Chumphon
Goodπ calm sea
Relatively dry: Chumphon 52 mm on 3.1 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Upper Gulf west: Hua Hin, Cha-am, Prachuap Khiri Khan
Goodπ calm sea
- Hua Hin14 mm
- Prachuap Khiri Khan21 mm
Relatively dry: Hua Hin 14 mm on 0.8 rainy days; Prachuap Khiri Khan 21 mm on 2 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
East coast: Pattaya, Bang Saen, Koh Larn (Chonburi)
Goodπ calm sea
- Pattaya20 mm
- Chonburi15 mm
- Sattahip22 mm
Relatively dry: Pattaya 20 mm on 1.8 rainy days; Chonburi 15 mm on 1.5 rainy days; Sattahip 22 mm on 2.3 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.wikipedia.org, en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, visit-thailand.org
East coast: Rayong, Koh Samet, Koh Man
Goodπ calm sea
Relatively dry: Rayong 32 mm on 2.6 rainy days (monthly average). Sea: sea mostly calm. visit-thailand.org describes Dec-Feb as very dry on Koh Samet.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, visit-thailand.org
East coast: Chanthaburi
Goodπ calm sea
Relatively dry: Chanthaburi 36 mm on 3.1 rainy days (monthly average). Sea: sea mostly calm. No Chanthaburi beaches or islands in our list; climate only.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
East coast: Trat, Koh Chang, Koh Kood, Koh Mak
Goodπ calm sea
Relatively dry: Trat 82 mm on 5.6 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, visit-thailand.org
Central: Koh Kret (Nonthaburi)
Good
Relatively dry: Bangkok 21 mm on 1.9 rainy days (monthly average). Bangkok climate used as a proxy for Koh Kret.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th