Fog in Ísafjörður

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 Ísafjörður Airport (BIIS). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
BIISÍsafjörður Airport48 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 Ísafjörður fogs in

Fog here concentrates in February and March — about 48 hours in a typical year at BIIS, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the BIIS station page.

Fog season

January: ~3 hJanFebruary: ~6 hFebMarch: ~5 hMarApril: ~1 hAprMay: ~1 hMayJune: ~0 hJunJuly: ~1 hJulAugust: ~3 hAugSeptember: ~1 hSepOctober: ~0 hOctNovember: ~1 hNovDecember: ~1 hDec
Fog season is January, February, March, August, peaking in February; fog is mostly a 7 AM–11 AM phenomenon; typically thinning out by 7 PM; 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.