Fog in Williamtown, NSW

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 7 hours of dense fog here (10-year average).

Measured at Newcastle Airport (YWLM). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
YWLMNewcastle Airport111 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 Williamtown fogs in

Fog here concentrates in March and May — about 111 hours in a typical year at YWLM, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the YWLM station page.

Fog season

January: ~2 hJanFebruary: ~11 hFebMarch: ~22 hMarApril: ~9 hAprMay: ~17 hMayJune: ~14 hJunJuly: ~14 hJulAugust: ~7 hAugSeptember: ~5 hSepOctober: ~4 hOctNovember: ~2 hNovDecember: ~1 hDec
Fog season runs February through August, peaking in March; fog is mostly a 1 AM–8 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 1 hour once it forms local time · 10-yr average

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