Fog in Kumamoto

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 4 hours of dense fog here (10-year average).

Measured at Kumamoto Airport (RJFT). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
RJFTKumamoto Airport99 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 Kumamoto fogs in

Fog here concentrates in June and April — about 99 hours in a typical year at RJFT, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the RJFT station page.

Fog season

January: ~3 hJanFebruary: ~16 hFebMarch: ~16 hMarApril: ~25 hAprMay: ~20 hMayJune: ~30 hJunJuly: ~13 hJulAugust: ~4 hAugSeptember: ~2 hSepOctober: ~4 hOctNovember: ~6 hNovDecember: ~13 hDec
Fog season is February, March, April, May, June, July, December, 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.