Fog in Ivalo

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 8 hours of dense fog here (10-year average).

Measured at Ivalo Airport (EFIV). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EFIVIvalo Airport50 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 Ivalo fogs in

Fog here concentrates in August and October — about 50 hours in a typical year at EFIV, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EFIV station page.

Fog season

January: ~4 hJanFebruary: ~3 hFebMarch: ~2 hMarApril: ~2 hAprMay: ~3 hMayJune: ~2 hJunJuly: ~7 hJulAugust: ~8 hAugSeptember: ~5 hSepOctober: ~7 hOctNovember: ~6 hNovDecember: ~1 hDec
Fog season runs January through November, peaking in August; fog is mostly a midnight–7 AM phenomenon; typically thinning out by 10 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.