Fog in Nantes

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 Nantes Atlantique Airport (LFRS). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LFRSNantes Atlantique Airport95 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 Nantes fogs in

Fog here concentrates in December and November — about 95 hours in a typical year at LFRS, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LFRS station page.

Fog season

January: ~15 hJanFebruary: ~11 hFebMarch: ~4 hMarApril: ~3 hAprMay: ~2 hMayJune: ~2 hJunJuly: ~0 hJulAugust: ~2 hAugSeptember: ~6 hSepOctober: ~14 hOctNovember: ~17 hNovDecember: ~22 hDec
Fog season runs September through February, peaking in December; fog is mostly a 1 AM–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.