Fog in Oslo (Gardermoen)

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 3 hours of dense fog here (10-year average).

Measured at Oslo-Gardermoen International Airport (ENGM). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
ENGMOslo-Gardermoen International Airport181 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 Oslo (Gardermoen) fogs in

Fog here concentrates in December and February — about 181 hours in a typical year at ENGM, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the ENGM station page.

Fog season

January: ~31 hJanFebruary: ~32 hFebMarch: ~19 hMarApril: ~6 hAprMay: ~2 hMayJune: ~2 hJunJuly: ~1 hJulAugust: ~3 hAugSeptember: ~8 hSepOctober: ~13 hOctNovember: ~27 hNovDecember: ~40 hDec
Fog season runs October through March, peaking in December; fog is mostly a midnight–noon phenomenon; 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.