Fog in Szymany

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 8 hours of dense fog here (10-year average).

Measured at Olsztyn-Mazury Airport (EPSY). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EPSYOlsztyn-Mazury Airport309 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 Szymany fogs in

Fog here concentrates in December and November — about 309 hours in a typical year at EPSY, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EPSY station page.

Fog season

January: ~45 hJanFebruary: ~35 hFebMarch: ~21 hMarApril: ~6 hAprMay: ~5 hMayJune: ~6 hJunJuly: ~8 hJulAugust: ~8 hAugSeptember: ~20 hSepOctober: ~53 hOctNovember: ~59 hNovDecember: ~75 hDec
Fog season runs September through March, peaking in December; fog is mostly a 10 PM–9 AM phenomenon; typically thinning out by 1 PM; 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.