Fog in Derry, Derry and Strabane

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 2 hours of dense fog here (10-year average).

Measured at City of Derry Airport (EGAE). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EGAECity of Derry Airport15 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 Derry, Derry and Strabane fogs in

Fog here concentrates in November and March — about 15 hours in a typical year at EGAE, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EGAE station page.

Fog season

January: ~1 hJanFebruary: ~0 hFebMarch: ~2 hMarApril: ~1 hAprMay: ~1 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~2 hAugSeptember: ~1 hSepOctober: ~1 hOctNovember: ~2 hNovDecember: ~1 hDec
Fog season is March, August, November, peaking in March; fog is mostly a 5 AM–8 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.