When To Go · Destination Guide
Pattaya Incl Samaesarn Sattahip Thailand
Wreck dives and day-trip reefs near Bangkok, with Navy-managed snorkeling in Sattahip
Updated Jan 23, 2026 • 22 sources
When To Go
Season planner for Pattaya (incl. Samaesarn / Sattahip)
Pattaya is warm year-round, but the most predictable water time is usually the dry season from November - April. During this window, seas are calmer and visibility is generally at its best, with water temperatures commonly around 27°C to 30°C. The monsoon season (May - October) can bring rougher seas and lower visibility, and some far-island trips may be cancelled. For snorkelers and freedivers, high tide and early mornings often produce the cleanest water and the calmest surface.
At A Glance Heatmap
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall | ||||||||||||
| Scuba | ||||||||||||
| Freedive | ||||||||||||
| Snorkel | ||||||||||||
| Topside |
Activity Drilldowns
OverallNovember - April·Crowd:Moderate·Cost:Moderate
Ideal: Calmer seas and better odds of clear water. Water often sits around 28°C.
Plan Carefully: More frequent rain and wind. Expect more cancellations and shorter windows between squalls.
Late November and late December can be busy due to festivals and holidays.
ScubaNovember - April·Crowd:Moderate·Cost:Moderate
Ideal: Best odds of strong visibility and smoother boat rides. Wreck days are more reliable.
Plan Carefully: Rougher seas and lower visibility are more common. Keep backup near-island plans.
If you want the best chance of 18 m plus visibility, prioritize farisland trips in December March and time dives around higher tides.
FreediveNovember - April·Crowd:Low·Cost:Moderate
Ideal: Smoother surfaces for line setups and safety coverage, with less wind-driven chop.
Plan Carefully: Chop and rain squalls can disrupt training. Prioritize pool training or sheltered bays.
Freedivers get the best sessions in the morning before boat traffic builds, especially near Koh Larn ferry routes.
SnorkelDecember - March·Crowd:High·Cost:Moderate
Ideal: Higher odds of clear water and calmer bay conditions. Aim for high tide for the best visibility.
Plan Carefully: More chop and reduced visibility. Keep plans flexible and consider managed snorkel zones.
Koh Larn is busiest on weekends and holidays.
TopsideNovember - February·Crowd:High·Cost:Moderate
Ideal: Drier, more comfortable sightseeing weather. Great for gardens, viewpoints, and long walking days.
Plan Carefully: More rain and storm bursts. Keep flexible transport and have indoor backups.
If you want highenergy street festivals, April's Songkran and Pattaya's Wan Lai days are peak.
Seasonal Callouts Timeline
Dry-season wildlife uptick
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecThe dry season has the calmest seas and is often the best window for consistent reef-fish action, rays, and occasional turtle sightings on offshore days.
Songkran and Wan Lai in Pattaya
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecThailand's New Year water festival peaks mid-April, with Pattaya's extended Wan Lai celebrations typically around April 18-19. Expect road closures, huge crowds, and all-day water fights.
Pattaya International Fireworks Festival
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecA major Pattaya Beach Road event in late November, usually run over two evenings with fireworks and crowds along the waterfront.
Sea turtle conservation visits in Sattahip
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecVisit the Royal Thai Navy Sea Turtle Conservation Center to learn about hatchlings and rehabilitation. It is an easy add-on to a Samaesarn or Sattahip day.