Destination comparison
Koh Samui is the clearer pick — 74 vs 57 on the Atlas Ranger Score, and it leads in 10 of 12 months. Tokyo only pulls ahead in Nov. If you're choosing on timing alone, Koh Samui is the safer bet; Tokyo makes sense mainly for its own strengths or its short strong window (best in May, 71).
Pick a month — the Atlas Ranger Score for each recomputes live, with the winner for that month.
In June, Koh Samui wins — 75 vs 67 on the Atlas Ranger Score.
Each line is a destination's Atlas Ranger Score across all twelve months — higher is a better time to visit. Where the lines cross is where the better choice flips.
Koh Samui Tokyo
Koh Samui leads 10 months (Jan, Feb, Mar, Apr, Jun, Jul, Aug, Sep, Oct, Dec) · Tokyo leads 1 month (Nov) · 1 too close to call
🇹🇭 Koh Samui
Pick Koh Samui if you want beaches and warm water with an easy family trip — it scores highest Jan–Apr, Jun–Oct and Dec and peaks in January (88).
Koh Samui full guide →🇯🇵 Tokyo
Pick Tokyo if you want big-city energy and food with temples, history and festivals — it scores highest Nov and peaks in May (71).
Tokyo full guide →Compare live hotel prices for either, or open each guide for current flight fares.
🇹🇭 Koh Samui
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Koh Samui is the clearer pick — 74 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.
Koh Samui averages a higher weather score (70 vs 52). Weather is the biggest input to the score, but both have strong months and weak months; the month-by-month chart shows exactly when.
Koh Samui has more shoulder- and low-season months, which is where the best value and the fewest crowds are. Travelling outside each destination's peak months is the single biggest way to cut costs.
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.
Scores come from the Atlas Ranger Score — our transparent 0–100 measure of how good a destination is to visit each month.
