제주 · 한라산·성산·비양도
Short answer: March, April, May, June, September, November and December are the quietest (77/100 on our crowd score), January, February, July, August and October are the busiest (100/100). Peak season for Jeju: January, February, July, August, October. Below, every month gets its own note, numbers and verdict.
| Month | Crowds | Mid-range / day | Verdict |
|---|---|---|---|
| January | high (100) | ₩90,000–₩180,000 | Worth it for green winter scenery — but book flights and cars early against the escape-season surge. |
| February | high (100) | ₩90,000–₩180,000 | Worth it for early blooms if you book well ahead — peak escape-season prices apply. |
| March | high (77) | ₩90,000–₩180,000 | Worth it — blooming island with calmer crowds and good value before April. |
| April | high (77) | ₩90,000–₩180,000 | Worth it — peak flower scenery with comfortable weather and pre-summer prices. |
| May | high (77) | ₩90,000–₩180,000 | Worth it — arguably Jeju's best all-round month for hiking and the coast. |
| June | high (77) | ₩90,000–₩180,000 | Worth it with a rain-flexible plan; waterfalls peak but skies are unsettled. |
| July | high (100) | ₩90,000–₩180,000 | Worth it for peak beach summer only — expect maximum crowds, cost and typhoon risk. |
| August | high (100) | ₩90,000–₩180,000 | Worth it for warm seas, but peak prices and typhoon-driven flight risk remain. |
| September | high (77) | ₩90,000–₩180,000 | Worth it — late September keeps the warm water but sheds the summer crowds. |
| October | high (100) | ₩90,000–₩180,000 | Worth it for silver-grass scenery and ideal hiking — expect a busy October. |
| November | high (77) | ₩90,000–₩180,000 | Worth it — comfortable, quieter and good value with tangerine season starting. |
| December | high (77) | ₩90,000–₩180,000 | Worth it for a mild citrus-season escape — book ahead as year-end crowds return. |
Crowd score (0–100) is estimated from peak-season timing, trending demand and place density; lower is quieter. Daily cost is a mid-range per-person estimate in Korean won.
Amber bars are peak-season months for Jeju.
Crowds high (100/100) · peak season · about ₩90,000–₩180,000 per person per day
Korea's mildest winter draws domestic escapers — flights and rental cars fill up around the holidays. Camellias bloom; the coast is windy but green.
Verdict: Worth it for green winter scenery — but book flights and cars early against the escape-season surge.
Why it peaks: the single most over-touristed region: winter escape (Jan-Feb), summer peak (Jul-Aug), autumn (Oct).
Crowds high (100/100) · peak season · about ₩90,000–₩180,000 per person per day
Winter-escape peak continues, intensified by Lunar New Year travel. Early plum and camellia blooms are lovely, but logistics get tight and pricey.
Verdict: Worth it for early blooms if you book well ahead — peak escape-season prices apply.
Why it peaks: the single most over-touristed region: winter escape (Jan-Feb), summer peak (Jul-Aug), autumn (Oct).
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Spring blooms spread fast and the escape crowds fade. Rapeseed-flower fields open late in the month while weather turns reliably pleasant.
Verdict: Worth it — blooming island with calmer crowds and good value before April.
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Rapeseed-flower season at its golden best with mild, breezy days. A scenic, moderate-crowd month before the summer flight premium kicks in.
Verdict: Worth it — peak flower scenery with comfortable weather and pre-summer prices.
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Lush and warm before the rains, with long coastal-trail days. One of the island's finest windows — green, mild and not yet summer-packed.
Verdict: Worth it — arguably Jeju's best all-round month for hiking and the coast.
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Humid as the monsoon arrives; Jeju often gets heavy island rain. Waterfalls roar and crowds are moderate, but plan for wet days.
Verdict: Worth it with a rain-flexible plan; waterfalls peak but skies are unsettled.
Crowds high (100/100) · peak season · about ₩90,000–₩180,000 per person per day
Hot, humid summer-peak with the heaviest flight and beach crowds and possible typhoons. Beaches are buzzing but everything is at premium price.
Verdict: Worth it for peak beach summer only — expect maximum crowds, cost and typhoon risk.
Why it peaks: the single most over-touristed region: winter escape (Jan-Feb), summer peak (Jul-Aug), autumn (Oct).
Crowds high (100/100) · peak season · about ₩90,000–₩180,000 per person per day
Still the summer-peak crush with warm seas and busy resorts. Typhoon season is active, so build buffer days around possible flight disruptions.
Verdict: Worth it for warm seas, but peak prices and typhoon-driven flight risk remain.
Why it peaks: the single most over-touristed region: winter escape (Jan-Feb), summer peak (Jul-Aug), autumn (Oct).
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Warm seas linger while peak crowds drop after holidays. Typhoon risk eases late in the month — a strong, better-value alternative to August.
Verdict: Worth it — late September keeps the warm water but sheds the summer crowds.
Crowds high (100/100) · peak season · about ₩90,000–₩180,000 per person per day
Clear, dry autumn with silver-grass plains glowing on the volcanic slopes. Comfortable hiking weather brings a secondary crowd peak.
Verdict: Worth it for silver-grass scenery and ideal hiking — expect a busy October.
Why it peaks: the single most over-touristed region: winter escape (Jan-Feb), summer peak (Jul-Aug), autumn (Oct).
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Late autumn calm: dry, comfortable and noticeably quieter than October. Tangerine harvest begins, and prices ease — an underrated window.
Verdict: Worth it — comfortable, quieter and good value with tangerine season starting.
Crowds high (77/100) · about ₩90,000–₩180,000 per person per day
Mild green winter and citrus everywhere, with escape-season crowds rebuilding toward year-end. Windy coast, but warmer than the mainland.
Verdict: Worth it for a mild citrus-season escape — book ahead as year-end crowds return.
Jeonnam: Yeosu & Suncheon coast deliver islands + sea without Jeju's flight premium and rental-car gridlock.
See the Jeonnam guide →Trip essentials for Jeju
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On our crowd score, March, April, May, June, September, November and December are the quietest (77/100) and January, February, July, August and October the busiest (100/100). Peak season for Jeju is January, February, July, August, October. Worth it — blooming island with calmer crowds and good value before April.
January, February, March, April, May, June, July, August, September, October, November and December carry the lowest mid-range daily budget, about ₩90,000 per person per day at the low end, while January, February, March, April, May, June, July, August, September, October, November and December reach up to ₩180,000. Budgets are mid-range estimates, not quotes.
Worth it for green winter scenery — but book flights and cars early against the escape-season surge. Korea's mildest winter draws domestic escapers — flights and rental cars fill up around the holidays. Camellias bloom; the coast is windy but green.
Crowd risk runs from 77 to 100 out of 100 across the twelve months. It is estimated from peak-season timing, trending demand and place density, so lower means quieter. The table above lists every month.