Fog in Puerto Williams

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 Guardia Marina Zañartu Airport (SCGZ). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
SCGZGuardia Marina Zañartu Airport34 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 Puerto Williams fogs in

Fog here concentrates in June and September — about 34 hours in a typical year at SCGZ. Hour-by-hour patterns, live conditions and the forecast strip live on the SCGZ station page.

Fog season

January: ~0 hJanFebruary: ~0 hFebMarch: ~0 hMarApril: ~0 hAprMay: ~3 hMayJune: ~13 hJunJuly: ~2 hJulAugust: ~0 hAugSeptember: ~9 hSepOctober: ~0 hOctNovember: ~1 hNovDecember: ~0 hDec
Fog season is June, September, peaking in June; fog is mostly a 9 PM–9 PM phenomenon; typically thinning out by 10 PM local time · 10-yr average

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