Fog in Tartu

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 12 hours of dense fog here (10-year average).

Measured at Tartu Airport (EETU). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EETUTartu Airport131 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 Tartu fogs in

Fog here concentrates in September and October — about 131 hours in a typical year at EETU, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EETU station page.

Fog season

January: ~14 hJanFebruary: ~14 hFebMarch: ~11 hMarApril: ~6 hAprMay: ~5 hMayJune: ~4 hJunJuly: ~7 hJulAugust: ~12 hAugSeptember: ~20 hSepOctober: ~16 hOctNovember: ~13 hNovDecember: ~13 hDec
Fog season runs July through May, peaking in September; fog is mostly a 11 PM–8 AM phenomenon; typically thinning out by 10 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.