BIRK — Reykjavík Domestic Airport

fog forecast & climatology · full 10-year analysis →
No fog forecast feed exists for this station. dense fog (visibility under a mile) is rare here in September (10-year average).

Fog hours per year
36 h below CAT I minima (2016–2026 average)
Fog season
February and December
Typical fog event
~1 h once it forms (middle half 1–2 h, n=238)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Reykjavík Domestic Airport spends 36 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in February and December. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~5 hJanFebruary: ~6 hFebMarch: ~4 hMarApril: ~2 hAprMay: ~2 hMayJune: ~3 hJunJuly: ~4 hJulAugust: ~1 hAugSeptember: ~0 hSepOctober: ~2 hOctNovember: ~1 hNovDecember: ~6 hDec
Fog season is January, February, March, April, May, June, July, October, December, peaking in February; fog here can hit at any hour of the day; 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.