Dive Seasons Guides

When to dive from Khao Lak: month-by-month conditions, Similan season dates, low-season options, and how to choose between day trips and liveaboards.

See how warm the sea is in Khao Lak through the year, what it means for swimming, snorkeling and diving, and whether you need a wetsuit.

When is the best time to dive Koh Chang? Compare dry and monsoon months, visibility, wreck and Koh Rang access, crowds and costs.

A practical guide to the Koh Lanta diving season: which dive sites are open when, where boats leave from, park fees, and how to pick your month.

Koh Lanta water temperature stays around 29–32°C year-round. See monthly sea figures, wetsuit advice, and when swell and visibility matter more.

Koh Lipe diving season explained: month-by-month conditions, Tarutao park closure dates, shoulder-month risks and who should dive when.

When is the best time to dive from Koh Samui? Month-by-month conditions, monsoon caveats, Sail Rock and Koh Tao day trips, and how to plan.

Koh Samui sea temperature stays warm all year, but conditions change by month. See monthly averages, wetsuit advice and which coast is calmest.

When to dive Koh Tao by month: visibility, sea conditions, whale shark odds, crowds and trade-offs, with picks by diver type.

Koh Tao water temperature through the year, how it changes with depth and season, and what exposure suit to wear for diving or snorkeling.

Plan Krabi diving by month: when Hin Daeng and Hin Muang open, what green season really means, and which sites suit your certification level.

Krabi sea temperature stays warm all year. See monthly ranges, what they feel like, and what to wear for diving and snorkeling.

Pattaya's sea stays warm all year. See month-by-month ranges, what to wear for diving or snorkeling, and when the water is best.

When to dive Phi Phi: the October–May window, what changes in shoulder months, and whether monsoon-season diving is worth it.

Phi Phi sea temperature is warm all year. See month-by-month conditions, visibility, wetsuit advice and when sea state matters more.

When is the best time to dive Phuket? See month-by-month conditions, which sites are open, and how to choose by skill level and goal.

Phuket's sea stays warm all year, but swell, visibility and monsoon season change what you can do. Month-by-month guide with swim and dive tips.

When do the Similan Islands open each year? Season dates, how to confirm the current status, and how to plan your first trip after reopening.

Similan Islands water stays warm all year, about 27–30 °C (81–86 °F). See what it means for snorkeling, diving, visibility and the open season.

Andaman or Gulf? Find the best month to dive Thailand by coast, marine life, visibility, budget and skill level, with a month-by-month guide.

Planning to dive in Thailand in January? Compare Andaman and Gulf conditions, the best dive bases, day trips vs liveaboards, and peak-season booking tips.

Diving in Thailand in March: Andaman vs Gulf, liveaboard vs day trips, costs in ฿, courses and who should choose which.

Planning to dive Thailand in May? Compare the Gulf and Andaman, whale shark odds, logistics, and when to book or skip.

Planning to dive Thailand in April? Compare the Andaman Sea and Gulf, choose between day trips and liveaboards, and check what to verify before you book.

What diving in Thailand is like in August: Gulf vs Andaman, park closures, liveaboards, visibility and which divers should go.

Planning to dive Thailand in December? Compare the Andaman and Gulf coasts, liveaboards vs day trips, crowds, and who should pick another month.

Planning to dive Thailand in February? Compare the Andaman Sea and Gulf of Thailand, liveaboard vs day trips, marine life, and how to book.

Thailand diving in July: Gulf of Thailand and Phuket day trips run, Similans stay closed. See where to dive, risks and who should wait.

Should you dive Thailand in June? Compare the Gulf and Andaman coasts, best sites, park closures, conditions and costs before you book.

November diving in Thailand splits by coast: Andaman season opens, Koh Tao turns monsoon. See where to dive, visibility, liveaboards and trade-offs.

Is diving Thailand in October worth it? See what's open on the Andaman and Gulf sides, the Similan season start, the risks and the fallbacks.

Is September a good month to dive Thailand? See which Andaman and Gulf areas are diveable, what's closed, and how to plan around the rainy season.

How warm is the sea in Thailand? Andaman vs Gulf ranges, month-by-month patterns, and what wetsuit to wear for diving or snorkeling.