Head to head

Koh Samui or Mexico?

Mexico, clearly — 66 vs 57 across the year.

Mexico is the stronger pick overall — 66 vs 57 on the Atlas Ranger Score — leading 8 of 12 months. But Koh Samui keeps a window, pulling ahead in Aug–Sep (peaking February, 73) — so if those are your dates, it's the better call. Otherwise Mexico, peaking February (80).

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 Mexico

In October, Mexico is the better bet — 52 vs 45.

Score

High / low

31° / 24°

32° / 23°

Rain

295 mm

242 mm

Sunshine

8.9 h

10.1 h

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

Mexico: Wettest month, and hurricane risk lingers

At a glance

Side by side

Koh Samui Mexico

Timing & weather

Year-round score57/10066/100

Best monthFebruary (73)February (80)

Months it leadsAug–SepJan–May and Oct–Dec

Cheapest monthsOct–NovMay and Sep–Oct

Driest monthFebruary (64mm)April (37mm)

Wettest monthNovember (445mm)October (242mm)

Hottest monthMay (33°C)June (34°C)

Best for

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

Culture & festivalsMexico 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)Cancun International Airport (CUN)

CurrencyTHB (Thai Baht)MXN (Mexican Peso), USD widely accepted at resorts

LanguageThaiSpanish (English widely spoken in resort areas)

Time zoneICT (UTC+7)Eastern EST (UTC−5) in Quintana Roo; other Mexican regions run on Central or Pacific time

ClimateTropical monsoon (Köppen Am)Caribbean coast (Cancún, Riviera Maya): tropical, dry Dec–Apr, hot and stormy Jun–Oct

Visa60-day visa exemption for most Western nationalities (extended Jul 2024)Most Western nationalities visa-free for up to 180 days; you receive an FMM tourist card (now often digital) on entry.

SafetyLow risk — standard tropical precautions, scooter accidents are the main injury sourceTourist zones and major resort areas are generally fine, and most visits are trouble-free. Check US State Department advisories state by state before travelling, and take normal precautions against petty crime. From June to November, heed official hurricane alerts.

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 Aug–Sep and peaks in February (73).

Koh Samui full guide

PickMexico

Pick Mexico if you want beaches, plus history and temples — it leads in Jan–May and Oct–Dec and peaks in February (80).

Mexico 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 Mexico better to visit?

Mexico is the clearer pick — 66 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 Mexico?

Mexico averages a higher weather score (61 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 Mexico?

Koh Samui is cheapest in Oct–Nov; Mexico 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 Mexico 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.