Fog in Rotterdam

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 2 hours of dense fog here (10-year average).

Measured at Rotterdam The Hague Airport (EHRD). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
EHRDRotterdam The Hague Airport140 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 Rotterdam fogs in

Fog here concentrates in December and January — about 140 hours in a typical year at EHRD, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the EHRD station page.

Fog season

January: ~27 hJanFebruary: ~9 hFebMarch: ~11 hMarApril: ~4 hAprMay: ~8 hMayJune: ~4 hJunJuly: ~3 hJulAugust: ~2 hAugSeptember: ~9 hSepOctober: ~14 hOctNovember: ~16 hNovDecember: ~36 hDec
Fog season runs September through March, peaking in December; fog is mostly a midnight–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.