Fog in Stockholm

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 Stockholm-Arlanda Airport (ESSA). This station has climatology and live observations only.

Measuring stations

stationairportfog hours/yrforecast
ESSAStockholm-Arlanda Airport134 h/yrclimatology
ESSBStockholm-Bromma Airport93 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 Stockholm fogs in

Fog here concentrates in January and November — about 134 hours in a typical year at ESSA, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the ESSA station page.

Fog season

January: ~22 hJanFebruary: ~13 hFebMarch: ~13 hMarApril: ~6 hAprMay: ~3 hMayJune: ~2 hJunJuly: ~3 hJulAugust: ~8 hAugSeptember: ~17 hSepOctober: ~12 hOctNovember: ~20 hNovDecember: ~16 hDec
Fog season runs August through April, peaking in January; fog is mostly a 10 PM–7 AM phenomenon; typically thinning out by 10 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.