Fog in Mazatlàn

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in August.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at General Rafael Buelna International Airport (MMMZ). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
MMMZGeneral Rafael Buelna International Airport46 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 Mazatlàn fogs in

Fog here concentrates in April and March — about 46 hours in a typical year at MMMZ, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the MMMZ station page.

Fog season

January: ~3 hJanFebruary: ~5 hFebMarch: ~10 hMarApril: ~13 hAprMay: ~4 hMayJune: ~0 hJunJuly: ~0 hJulAugust: ~0 hAugSeptember: ~1 hSepOctober: ~0 hOctNovember: ~1 hNovDecember: ~8 hDec
Fog season is February, March, April, May, December, peaking in April; fog is mostly a midnight–6 AM phenomenon; typically thinning out by 8 AM; a typical event lasts about 2 hours once it forms local time · 10-yr average

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