Fog in Tallinn

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 4 hours of dense fog here (10-year average).

Measured at Lennart Meri Tallinn Airport (EETN). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EETNLennart Meri Tallinn Airport109 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 Tallinn fogs in

Fog here concentrates in December and January — about 109 hours in a typical year at EETN, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EETN station page.

Fog season

January: ~16 hJanFebruary: ~13 hFebMarch: ~14 hMarApril: ~6 hAprMay: ~4 hMayJune: ~3 hJunJuly: ~2 hJulAugust: ~4 hAugSeptember: ~13 hSepOctober: ~10 hOctNovember: ~9 hNovDecember: ~17 hDec
Fog season runs September through April, peaking in December; fog is mostly a 11 PM–8 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.