Fog in Copenhagen

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 1 hour of dense fog here (10-year average).

Measured at Copenhagen Kastrup Airport (EKCH). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EKCHCopenhagen Kastrup Airport87 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 Copenhagen fogs in

Fog here concentrates in March and January — about 87 hours in a typical year at EKCH, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EKCH station page.

Fog season

January: ~18 hJanFebruary: ~15 hFebMarch: ~20 hMarApril: ~5 hAprMay: ~3 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~4 hSepOctober: ~9 hOctNovember: ~6 hNovDecember: ~5 hDec
Fog season runs October through April, peaking in March; fog is mostly a 9 PM–9 AM 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.