Fog in Donegal

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 4 hours of dense fog here (10-year average).

Measured at Donegal Airport (EIDL). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EIDLDonegal Airport10 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 Donegal fogs in

Fog here concentrates in August and November — about 10 hours in a typical year at EIDL, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EIDL station page.

Fog season

January: ~1 hJanFebruary: ~0 hFebMarch: ~1 hMarApril: ~0 hAprMay: ~0 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~4 hAugSeptember: ~0 hSepOctober: ~1 hOctNovember: ~1 hNovDecember: ~0 hDec
Fog season is August, peaking in August; fog is mostly a 9 PM–9 PM phenomenon; typically thinning out by 10 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.