Fog in Roskilde

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 12 hours of dense fog here (10-year average).

Measured at Copenhagen Roskilde Airport (EKRK). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EKRKCopenhagen Roskilde Airport247 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 Roskilde fogs in

Fog here concentrates in January and March — about 247 hours in a typical year at EKRK, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EKRK station page.

Fog season

January: ~44 hJanFebruary: ~30 hFebMarch: ~39 hMarApril: ~12 hAprMay: ~8 hMayJune: ~3 hJunJuly: ~4 hJulAugust: ~12 hAugSeptember: ~19 hSepOctober: ~23 hOctNovember: ~26 hNovDecember: ~26 hDec
Fog season runs August through April, peaking in January; fog is mostly a 11 PM–8 AM phenomenon; typically thinning out by 11 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.