Fog in Umeå

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 21 hours of dense fog here (10-year average).

Measured at Umeå Airport (ESNU). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
ESNUUmeå Airport219 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 Umeå fogs in

Fog here concentrates in September and October — about 219 hours in a typical year at ESNU, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the ESNU station page.

Fog season

January: ~16 hJanFebruary: ~19 hFebMarch: ~22 hMarApril: ~13 hAprMay: ~11 hMayJune: ~12 hJunJuly: ~15 hJulAugust: ~21 hAugSeptember: ~32 hSepOctober: ~27 hOctNovember: ~18 hNovDecember: ~15 hDec
Fog season is year-round, peaking in September; fog is mostly a 11 PM–5 AM phenomenon; typically thinning out by 8 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.