Fog in Masset, BC

daily fog outlook & 2016–2026 climatology
Fog possible — NWS guidance shows a fog signal in the next 48 hours. August typically brings about 2 hours of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

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

Measuring station

stationairportfog hours/yrforecast
CZMTMasset Airport26 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 Masset fogs in

Fog here concentrates in July and September — about 26 hours in a typical year at CZMT, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the CZMT station page.

Fog season

January: ~2 hJanFebruary: ~0 hFebMarch: ~0 hMarApril: ~0 hAprMay: ~2 hMayJune: ~1 hJunJuly: ~3 hJulAugust: ~2 hAugSeptember: ~2 hSepOctober: ~1 hOctNovember: ~1 hNovDecember: ~1 hDec
Fog season is January, May, July, August, September, peaking in July; fog is mostly a 6 AM–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.