Fog in Pirassununga

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 3 hours of dense fog here (10-year average).

Measured at Campo Fontenelle (SBYS). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
SBYSCampo Fontenelle72 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 Pirassununga fogs in

Fog here concentrates in June and July — about 72 hours in a typical year at SBYS, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the SBYS station page.

Fog season

January: ~1 hJanFebruary: ~3 hFebMarch: ~2 hMarApril: ~6 hAprMay: ~14 hMayJune: ~18 hJunJuly: ~18 hJulAugust: ~3 hAugSeptember: ~1 hSepOctober: ~1 hOctNovember: ~0 hNovDecember: ~1 hDec
Fog season runs April through July, peaking in June; fog is mostly a 5 AM–8 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.