Fog in Jeju City

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. dense fog (visibility under a mile) is rare here in August (10-year average).

Measured at Jeju International Airport (RKPC). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
RKPCJeju International Airport23 h/yrclimatology

Fog is measured where instruments live — airports. Hours/yr = time below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), the aviation definition of seriously dense fog.

When Jeju City fogs in

Fog here concentrates in June and May — about 23 hours in a typical year at RKPC, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the RKPC station page.

Fog season

January: ~1 hJanFebruary: ~0 hFebMarch: ~2 hMarApril: ~4 hAprMay: ~5 hMayJune: ~7 hJunJuly: ~1 hJulAugust: ~0 hAugSeptember: ~1 hSepOctober: ~0 hOctNovember: ~0 hNovDecember: ~0 hDec
Fog season runs March through June, peaking in June; fog is mostly a 10 PM–6 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 1 hour once it forms local time · 10-yr average

Machine access: data.json · llms.txt · forecast verification. Not for operational use.