Head to head

Koh Samui or Tulum?

Tulum, clearly — 65 vs 57 across the year.

Tulum is the stronger pick overall — 65 vs 57 on the Atlas Ranger Score — leading 8 of 12 months. But Koh Samui keeps a window, pulling ahead in Jun and Aug–Sep (peaking February, 73) — so if those are your dates, it's the better call. Otherwise Tulum, peaking February (79).

Month by month

When to go

Pick a month. The line shows each place's score across the year; the figures below are that month's averages.

Koh Samui Tulum

In October, Tulum is the better bet — 66 vs 45.

Score

High / low

31° / 24°

Rain

295 mm

134 mm

Sunshine

8.9 h

9.8 h

Koh Samui: Wet season starts — rainfall more than doubles, beach days unreliable

Tulum: Storm risk eases late — Day of the Dead nears

At a glance

Side by side

Koh Samui Tulum

Timing & weather

Year-round score57/10065/100

Best monthFebruary (73)February (79)

Months it leadsJun and Aug–SepJan–May and Oct–Dec

Cheapest monthsOct–NovMay and Sep–Oct

Driest monthFebruary (64mm)April (40mm)

Wettest monthNovember (445mm)June (259mm)

Hottest monthMay (33°C)August (34°C)

Best for

BeachesBoth are beach destinations — compare the months above for when each is warmest and driestEvenEven

Culture & festivalsTulum is the stronger pick for history, temples and festivals—Stronger

Off-peak monthsKoh Samui has more shoulder and low-season months (9 vs 7), when rates and crowds easeStronger—

Practical

Main airportSamui International Airport (USM)Tulum International (Felipe Carrillo Puerto)

CurrencyTHB (Thai Baht)MXN (Mexican Peso) — USD widely accepted

LanguageThaiSpanish (English widely spoken)

Time zoneICT (UTC+7)Eastern EST (UTC−5)

ClimateTropical monsoon (Köppen Am)Tropical wet-and-dry (Köppen Aw)

Visa60-day visa exemption for most Western nationalities (extended Jul 2024)Visa-free for up to 180 days for most Western nationalities (US, Canada, UK, EU, Australia); fill in the FMM entry form on arrival or online.

SafetyLow risk — standard tropical precautions, scooter accidents are the main injury sourceTourist areas are generally safe; the main concern is petty theft along the beach road and in crowded venues at night. During June–November, heed hurricane and tropical-storm alerts and keep flexible plans.

Named storms nearby nowNASA EONET, checked hourly. Not a forecast.None tracked within 1,000kmNone tracked within 1,000km

Your trip

Which should you pick?

PickKoh Samui

Pick Koh Samui if you want beaches, plus easy family travel — it leads in Jun and Aug–Sep and peaks in February (73).

Koh Samui full guide

PickTulum

Pick Tulum if you want beaches, plus history and temples — it leads in Jan–May and Oct–Dec and peaks in February (79).

Tulum full guide

Plan your trip

Hotels, flights and more

Switch between the two. Hotel prices are for a week in each destination's best month.

Book Koh Samui

$$ · First-time visitors, dining variety, the busiest beach

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Questions

Good to know

Is Koh Samui or Tulum better to visit?

Tulum is the clearer pick — 65 vs 57 on the Atlas Ranger Score, our 0–100 measure of weather, crowds, value, and timing across the year. It leads most of the year, though the month-by-month chart still shows the other's stronger windows.

Which has better weather, Koh Samui or Tulum?

Tulum averages a higher weather score (60 vs 53). Weather is the biggest input to the score, but both have strong months and weak months; the month-by-month chart shows exactly when.

When is it cheapest to visit Koh Samui or Tulum?

Koh Samui is cheapest in Oct–Nov; Tulum is cheapest in May and Sep–Oct. Those are the low and shoulder months, when hotel rates and crowds ease — usually because the weather is less reliable, so check the month-by-month scores above before you book.

Can I visit both Koh Samui and Tulum in one trip?

Often yes — many travellers pair them. The smart move is to time each leg to its own best months. Check each destination's full guide (linked below) for the month-by-month detail, then sequence your trip so each stop lands in its strong window.