Destination comparison
Koh Samui carries the year (74 vs 65 on the Atlas Ranger Score, ahead 6 of 12 months), but Bali is no also-ran — it leads Jun and Aug–Sep and offers beaches and warm water with temples, history and festivals against Koh Samui's beaches and warm water with an easy family trip. Match the month to the mood: Koh Samui peaks January, Bali June.
Pick a month — the Atlas Ranger Score for each recomputes live, with the winner for that month.
In July, Bali wins — 74 vs 73 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.
Bali Koh Samui
Bali leads 3 months (Jun, Aug, Sep) · Koh Samui leads 6 months (Jan, Feb, Mar, Apr, Nov, Dec) · 3 too close to call
🇮🇩 Bali
Pick Bali if you want beaches and warm water with temples, history and festivals — it leads in Jun and Aug–Sep and peaks in June (81).
Bali full guide →🇹🇭 Koh Samui
Pick Koh Samui if you want beaches and warm water with an easy family trip — it leads in Jan–Apr and Nov–Dec and peaks in January (88).
Koh Samui full guide →Compare live hotel prices for either, or open each guide for current flight fares.
🇹🇭 Koh Samui
Hotel links are affiliate links — they cost you nothing and help fund the Atlas Ranger Score.
Koh Samui is the clearer pick — 74 vs 65 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 60). 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.
