Fog in Mae Hong Son

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 Mae Hong Son Airport (VTCH). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
VTCHMae Hong Son Airport105 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 Mae Hong Son fogs in

Fog here concentrates in January and December — about 105 hours in a typical year at VTCH, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the VTCH station page.

Fog season

January: ~39 hJanFebruary: ~8 hFebMarch: ~1 hMarApril: ~0 hAprMay: ~0 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~0 hSepOctober: ~0 hOctNovember: ~7 hNovDecember: ~29 hDec
Fog season runs December through January, peaking in January; fog is mostly a 5 AM–8 AM phenomenon; typically thinning out by 9 AM; a typical event lasts about 2 hours once it forms local time · 10-yr average

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