Fog in Stornoway, Western Isles

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 Stornoway Airport (EGPO). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EGPOStornoway Airport85 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 Stornoway, Western Isles fogs in

Fog here concentrates in September and July — about 85 hours in a typical year at EGPO, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EGPO station page.

Fog season

January: ~2 hJanFebruary: ~3 hFebMarch: ~6 hMarApril: ~8 hAprMay: ~6 hMayJune: ~8 hJunJuly: ~13 hJulAugust: ~12 hAugSeptember: ~13 hSepOctober: ~6 hOctNovember: ~3 hNovDecember: ~5 hDec
Fog season is March, April, May, June, July, August, September, October, December, peaking in July; fog is mostly a 8 PM–5 AM phenomenon; typically thinning out by 8 AM; 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.