Fog in Landivisiau

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 18 hours of dense fog here (10-year average).

Measured at Landivisiau Air Base (LFRJ). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFRJLandivisiau Air Base153 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 Landivisiau fogs in

Fog here concentrates in September and August — about 153 hours in a typical year at LFRJ, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFRJ station page.

Fog season

January: ~5 hJanFebruary: ~4 hFebMarch: ~14 hMarApril: ~11 hAprMay: ~15 hMayJune: ~15 hJunJuly: ~11 hJulAugust: ~18 hAugSeptember: ~21 hSepOctober: ~16 hOctNovember: ~7 hNovDecember: ~15 hDec
Fog season runs March through December, peaking in September; fog is mostly a 1 AM–9 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.