Jeju · Month comparison

July vs October

October ranks #1 overall vs July at #11. Single best month — autumn foliage on Hallasan, pink muhly fields, tangerine harvest starting, clear 21C skies after typhoon season ends.

July Jeju Hyupjae beach with white sand and turquoise summer sea

July

#11 of 12 months

Worth considering

Late jangma into typhoon season — humid 28C, monsoon tails, but sea swimmable and Korean families starting to arrive for school break.

  • ↑Sea temperature 24C — first reliably swimmable month at Hyupjae and Jungmun beaches
  • ↑Korean indie music festivals (Stepping Stone Festival) and food festivals start
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
FactorJulyOctober
Weather score
5
10
Value score
4
4
Crowd score
3
4
Events score
7
9
Atmosphere
8
10
Avg high temp28°C21°C
Monthly rain240mm80mm
Daily sunshine5hrs6hrs

July trade-offs

  • ↓Late jangma + early typhoon — 240mm rainfall, ferry cancellations possible
  • ↓Pension rates climbing as Korean school break starts
  • ↓Tropical 28C/23C with 84% humidity

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 →July in detail →October in detail →
Scores compare months within Jeju. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →