Jeju · Month comparison

August vs October

October ranks #1 overall vs August at #12. Single best month — autumn foliage on Hallasan, pink muhly fields, tangerine harvest starting, clear 21C skies after typhoon season ends.

August Jeju packed beach with Korean families during summer holidays

August

#12 of 12 months

Worth considering

Korean domestic summer absolute peak — entire country on vacation, hotel rates doubled, every beach packed, typhoon risk highest.

  • ↑Domestic vacation energy at Hyupjae, Jungmun, Geumneung beaches
  • ↑Sea at year-warmest 25C — best swimming and snorkeling at Udo island
October Jeju Hallasan autumn foliage in orange and red colours

October

#1 of 12 months

Best match

Single best month — autumn foliage on Hallasan, pink muhly fields, tangerine harvest starting, clear 21C skies after typhoon season ends.

  • ↑Hallasan autumn foliage (danpung) peaks third week — Yeongsil trail spectacular
  • ↑Pink muhly grass at Saryeoni and Hwasun in full neon-pink
FactorAugustOctober
Weather score
5
10
Value score
1
4
Crowd score
1
4
Events score
7
9
Atmosphere
8
10
Avg high temp30°C21°C
Monthly rain270mm80mm
Daily sunshine6hrs6hrs

August trade-offs

  • ↓Hotel rates at peak — Shilla Jeju and Hyatt Regency from KRW 500,000+
  • ↓Typhoon risk highest — 2-3 named storms possible, ferry/flight disruption
  • ↓Pensions and resort cottages booked 3-4 months ahead

October trade-offs

  • ↓Hotel rates climbing — Shilla and Lotte at autumn-peak 30% above shoulder
  • ↓Hangeul Day and Foundation Day holiday weekends busy
  • ↓Hallasan summit weekends require 04:00 trailhead arrival
See all 12 months for Jeju →August in detail →October in detail →
Scores compare months within Jeju. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →