Fog in Brest

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 11 hours of dense fog here (10-year average).

Measured at Brest Bretagne airport (LFRB). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFRBBrest Bretagne airport128 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 Brest fogs in

Fog here concentrates in September and October — about 128 hours in a typical year at LFRB, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFRB station page.

Fog season

January: ~6 hJanFebruary: ~5 hFebMarch: ~11 hMarApril: ~8 hAprMay: ~11 hMayJune: ~11 hJunJuly: ~8 hJulAugust: ~11 hAugSeptember: ~19 hSepOctober: ~17 hOctNovember: ~6 hNovDecember: ~17 hDec
Fog season is year-round, peaking in September; fog is mostly a 2 AM–9 AM phenomenon; typically thinning out by 11 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.