Fog in Mikkeli

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 14 hours of dense fog here (10-year average).

Measured at Mikkeli Airport (EFMI). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EFMIMikkeli Airport148 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 Mikkeli fogs in

Fog here concentrates in September and October — about 148 hours in a typical year at EFMI, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EFMI station page.

Fog season

January: ~13 hJanFebruary: ~8 hFebMarch: ~9 hMarApril: ~5 hAprMay: ~3 hMayJune: ~5 hJunJuly: ~8 hJulAugust: ~14 hAugSeptember: ~36 hSepOctober: ~19 hOctNovember: ~14 hNovDecember: ~16 hDec
Fog season is January, March, August, September, October, November, December, peaking in September; fog is mostly a midnight–8 AM phenomenon; typically thinning out by 11 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.