Head to head

Iceland or Koh Samui?

Koh Samui, clearly — 57 vs 35 across the year.

Koh Samui is the clearer pick — 57 vs 35 on the Atlas Ranger Score, and it leads 10 of 12 months. Iceland never pulls ahead, with its own best stretch in July (60). On timing alone Koh Samui is the safer bet; Iceland earns the trip on its own character, not its calendar.

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.

Iceland Koh Samui

In October, Koh Samui is the better bet — 45 vs 32.

Score

High / low

8° / 3°

31° / 24°

Rain

80 mm

295 mm

Sunshine

4.2 h

8.9 h

Iceland: Aurora visible most clear nights — winter weather returns

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

At a glance

Side by side

Iceland Koh Samui

Timing & weather

Year-round score35/10057/100

Best monthJuly (60)February (73)

Months it leadsNoneJan–May and Aug–Dec

Cheapest monthsJan–Mar and Oct–NovOct–Nov

Driest monthJune (43mm)February (64mm)

Wettest monthDecember (95mm)November (445mm)

Hottest monthJuly (15°C)May (33°C)

Best for

BeachesKoh Samui is the stronger beach trip—Stronger

Culture & festivalsIceland is the stronger pick for history, temples and festivalsStronger—

Mountains & hikingIceland is the stronger pick for mountains and hikingStronger—

Off-peak monthsBoth have 9 shoulder or low-season monthsEvenEven

Practical

Main airportKeflavík International Airport (KEF)Samui International Airport (USM)

CurrencyISK (Icelandic Króna)THB (Thai Baht)

LanguageIcelandic (English universal)Thai

Time zoneGMT (UTC+0, no DST)ICT (UTC+7)

ClimateSubarctic oceanic (Köppen Cfc) — mild for the latitude due to Gulf Stream. Figures on this page are for Reykjavík and the southwest; the north is drier and the highlands colder and wetterTropical monsoon (Köppen Am)

VisaSchengen — 90 days for EU/UK/US/Canada/Australia and most other nationalities60-day visa exemption for most Western nationalities (extended Jul 2024)

SafetyVery low risk — weather and driving are the real hazards, not crimeLow risk — standard tropical precautions, scooter accidents are the main injury source

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?

PickIceland

Pick Iceland if you want the northern lights, plus hiking — its strongest stretch is around July (60).

Iceland full guide

PickKoh Samui

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

Koh Samui 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 Iceland

$$$ · Base for Golden Circle + day trips, restaurants, bars

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Questions

Good to know

Is Iceland or Koh Samui better to visit?

Koh Samui is the clearer pick — 57 vs 35 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, Iceland or Koh Samui?

Koh Samui averages a higher weather score (53 vs 28). 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 Iceland or Koh Samui?

Iceland is cheapest in Jan–Mar and Oct–Nov; Koh Samui is cheapest in Oct–Nov. 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 Iceland and Koh Samui 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.