Fog in Trollhättan

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 25 hours of dense fog here (10-year average).

Measured at Trollhättan-Vänersborg Airport (ESGT). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
ESGTTrollhättan-Vänersborg Airport260 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 Trollhättan fogs in

Fog here concentrates in September and February — about 260 hours in a typical year at ESGT, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the ESGT station page.

Fog season

January: ~31 hJanFebruary: ~29 hFebMarch: ~23 hMarApril: ~9 hAprMay: ~10 hMayJune: ~9 hJunJuly: ~11 hJulAugust: ~25 hAugSeptember: ~45 hSepOctober: ~25 hOctNovember: ~26 hNovDecember: ~31 hDec
Fog season runs August through March, peaking in September; fog is mostly a 9 PM–7 AM phenomenon; typically thinning out by 9 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.