Jeju · Month comparison

January vs October

October ranks #1 overall vs January at #7. Single best month — autumn foliage on Hallasan, pink muhly fields, tangerine harvest starting, clear 21C skies after typhoon season ends.

January Jeju Hallasan snow-covered peak with winter hikers

January

#7 of 12 months

Strong option

Quietest month — cold, often snowy on Hallasan, mild on the coast, hotel rates at year-low, Seollal (Korean New Year) brings brief disruption.

  • ↑Hallasan winter hiking with snow — Seongpanak and Gwaneumsa trails to 1,950m peak
  • ↑Hotel rates 50% below August peak — Hyatt Regency and Shilla from KRW 200,000
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
FactorJanuaryOctober
Weather score
4
10
Value score
8
4
Crowd score
8
4
Events score
6
9
Atmosphere
7
10
Avg high temp8°C21°C
Monthly rain60mm80mm
Daily sunshine4hrs6hrs

January trade-offs

  • ↓Seollal (Korean Lunar New Year, late Jan/Feb): 3-5 days of family-travel disruption
  • ↓Hallasan summit trails: only Seongpanak open, microspikes required Dec-Feb
  • ↓Ferries from mainland cancelled 1-2 days/month due to winter storms

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