Fog in Yakushima

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 Yakushima Airport (RJFC). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
RJFCYakushima Airport44 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 Yakushima fogs in

Fog here concentrates in May and April — about 44 hours in a typical year at RJFC. Hour-by-hour patterns, live conditions and the forecast strip live on the RJFC station page.

Fog season

January: ~0 hJanFebruary: ~0 hFebMarch: ~5 hMarApril: ~8 hAprMay: ~13 hMayJune: ~6 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~0 hSepOctober: ~3 hOctNovember: ~0 hNovDecember: ~0 hDec
Fog season runs March through June, peaking in May; fog is mostly a 10 AM–10 AM phenomenon; typically thinning out by 11 AM local time · 10-yr average

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