Fog in Puerto San José

daily fog outlook & 2016–2026 climatology
Forecast feed initializing for this station. dense fog (visibility under a mile) is rare here in August (10-year average).

Measured at San José Airport (MGSJ). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
MGSJSan José Airport4 h/yrverifying

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 Puerto San José fogs in

Fog here concentrates in November and December — about 4 hours in a typical year at MGSJ. Hour-by-hour patterns, live conditions and the forecast strip live on the MGSJ station page.

Fog season

January: ~0 hJanFebruary: ~0 hFebMarch: ~0 hMarApril: ~0 hAprMay: ~0 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~0 hSepOctober: ~0 hOctNovember: ~1 hNovDecember: ~0 hDec
Puerto San José has no real fog season — dense fog is rare in every month (under 2 hours even in the peak month).

Machine access: data.json · llms.txt · forecast verification. Not for operational use.