Fog in Sydney, NS

daily fog outlook & 2016–2026 climatology
Forecast feed initializing for this station. August typically brings about 7 hours of dense fog here (10-year average).

Measured at Sydney / J.A. Douglas McCurdy Airport (CYQY). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
CYQYSydney / J.A. Douglas McCurdy Airport145 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 Sydney fogs in

Fog here concentrates in June and April — about 145 hours in a typical year at CYQY, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CYQY station page.

Fog season

January: ~8 hJanFebruary: ~10 hFebMarch: ~13 hMarApril: ~20 hAprMay: ~17 hMayJune: ~21 hJunJuly: ~20 hJulAugust: ~7 hAugSeptember: ~7 hSepOctober: ~8 hOctNovember: ~6 hNovDecember: ~6 hDec
Fog season is year-round, peaking in June; fog is mostly a 11 PM–9 AM phenomenon; typically thinning out by 11 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.