Fog in Cognac/Châteaubernard

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. dense fog (visibility under a mile) is rare here in August (10-year average).

Measured at Cognac-Châteaubernard (BA 709) Air Base (LFBG). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFBGCognac-Châteaubernard (BA 709) Air Base96 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 Cognac/Châteaubernard fogs in

Fog here concentrates in December and November — about 96 hours in a typical year at LFBG, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFBG station page.

Fog season

January: ~16 hJanFebruary: ~12 hFebMarch: ~2 hMarApril: ~2 hAprMay: ~2 hMayJune: ~2 hJunJuly: ~1 hJulAugust: ~0 hAugSeptember: ~5 hSepOctober: ~11 hOctNovember: ~20 hNovDecember: ~25 hDec
Fog season runs October through February, peaking in December; fog is mostly a midnight–10 AM phenomenon; typically thinning out by noon; 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.