EFKK — Kokkola-Pietarsaari Airport

fog forecast & climatology · Kokkola / Kruunupyy city page · full 10-year analysis →
No fog forecast feed exists for this station. September typically brings about 19 hours of dense fog here (10-year average).

Fog hours per year
152 h below CAT I minima (2016–2026 average)
Fog season
October and September
Typical fog event
~1 h once it forms (middle half 1–2 h, n=830)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Kokkola-Pietarsaari Airport spends 152 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in October and September. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~17 hJanFebruary: ~14 hFebMarch: ~10 hMarApril: ~8 hAprMay: ~7 hMayJune: ~6 hJunJuly: ~9 hJulAugust: ~12 hAugSeptember: ~19 hSepOctober: ~20 hOctNovember: ~17 hNovDecember: ~16 hDec
Fog season is year-round, peaking in October; fog is mostly a 1 AM–9 AM phenomenon; typically thinning out by 1 PM; a typical event lasts about 1 hour once it forms local time · 10-yr average

For flight operations

EFVS crews: the CHASE board ranks airports by live fog status, approach lighting, go-around height and flight time from your base. Forecast probabilities publish here per-airport once the calibrated model beats climatology on live verification — receipts on the scorecard. Methodology.

Sources: NOAA/NWS National Blend of Models guidance · METAR observations 2016–2026 (Iowa Environmental Mesonet) · FAA NASR. Machine access: data.json · llms.txt. Not for operational use.