FNMO — Welwitschia Mirabilis International Airport

fog forecast & climatology · Moçâmedes city page · full 10-year analysis →
No fog forecast feed exists for this station. September typically brings about 30 hours of dense fog here (10-year average).

Fog hours per year
20 h below CAT I minima (2016–2026 average)
Fog season
June and September
Typical fog event
~1 h once it forms (middle half 1–2 h, n=29)
Data through
2026-08-15 · machine-readable data.json

When this airport fogs in

In a typical year Welwitschia Mirabilis International Airport spends 20 hours below CAT I approach minima (visibility under ~½ mile or ceiling under 200 ft), concentrated in June and September. The strip above shows the hour-by-hour pattern for the current month from ten years of weather observations.

Fog season

January: ~0 hJanFebruary: ~0 hFebMarch: ~0 hMarApril: ~0 hAprMay: ~5 hMayJune: ~40 hJunJuly: ~2 hJulAugust: ~3 hAugSeptember: ~30 hSepOctober: ~0 hOctNovember: ~0 hNovDecember: ~0 hDec
Fog season is June, September, peaking in June; fog is mostly a 6 AM–6 AM phenomenon; typically thinning out by 7 AM; 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.