Thailand Seasonal Dive Site Weather Conditions

Weather is unpredictable, especially far enough in advance to plan holidays. The weather conditions on this page are based on the experience of a number of dive schools and operators who have been diving the specific areas for years.

And the first comment of these operators is that the seasonal conditions tend to change from year to year.

Map of Thailand Scuba Diving Sites

Andaman Sea

  • Jan - Mar - Excellent diving & calm seas
  • April - Good to Excellent diving & calm to choppy seas
  • May- Oct - Good diving - choppy to rough seas
  • Nov & Dec - Good diving - choppy seas
  • Recent years have seen stronger East winds, especially in Nov - Jan when some smaller boats may not be able to reach Richelieu Rock

Koh Phi Phi

  • Jan - Mar - Excellent diving & calm seas
  • May - July - Good diving & choppy/rough seas
  • August - Fair diving & choppy seas
  • Sep - Fair diving & choppy seas
  • Nov & Dec - Excellent diving & calm seas (protected location)

Koh Lanta Area

  • Jan thru Mar - Excellent diving & calm seas
  • May & June - Fair diving & Choppy seas
  • Jul & Aug - Fair to poor diving & choppy seas/large waves
  • Sep & Oct - Poor diving and large waves
  • Nov - Good Diving & choppy seas
  • Dec - Excellent diving & calm seas

Butang Group (Koh Lipe & Koh Tarutao)

  • Jan & Feb - Good diving & choppy seas
  • March - Fair diving & choppy seas
  • April - Fair diving & calm seas
  • May - Good diving & calm seas
  • June & Aug - Excellent diving & choppy seas
  • Sep & Oct - Excellent diving and large waves
  • Nov - Dec - Excellent diving & choppy seas

Western Gulf of Thailand

  • Jan & Feb - Good/good diving & choppy seas
  • March - Excellent diving & calm seas
  • Apr - Jun - Fair/good diving & choppy seas
  • Jul & Aug - Excellent diving & choppy seas
  • Sep - Excellent diving & choppy seas
  • Oct - Excellent diving & calm seas
  • Nov & Dec - Poor diving & large waves
  • Jul thru Sep are whale shark months

Pattaya Area

  • Jan thru Mar - Excellent diving & calm seas
  • Apr - Fair diving & large waves
  • May - Fair diving, rain & large waves
  • Jun thru Aug - Good diving & choppy seas (SW)
  • Sep - Excellent diving, some rain, flat seas
  • Oct - Poor diving, rain, storms
  • Nov & Dec - Good diving & choppy seas (NE)
  • SW=Southwest Monsoon   NE=Northeast Monsoon

Koh Chang Area

  • Jan thru Mar - Excellent diving & calm seas
  • Apr - Fair diving & large waves
  • May thru Oct - Poor diving, rain, large waves (SW)
  • Nov & Dec - Good diving & choppy seas
  • SW=Southwest Monsoon   NE=Northeast Monsoon

Printer friendly collection of weather tables ... Thailand scuba dive weather

Large animated satellite weather map of the region.