Fog in Sofia

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 Sofia Airport (LBSF). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
LBSFSofia Airport136 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 Sofia fogs in

Fog here concentrates in January and December — about 136 hours in a typical year at LBSF, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the LBSF station page.

Fog season

January: ~41 hJanFebruary: ~7 hFebMarch: ~3 hMarApril: ~2 hAprMay: ~4 hMayJune: ~2 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~4 hSepOctober: ~6 hOctNovember: ~31 hNovDecember: ~39 hDec
Fog season runs November through January, peaking in January; fog is mostly a 3 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.