Fog in El Hierro Island
daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. dense fog (visibility under a mile) is rare here in August (10-year average).
Measured at El Hierro Airport (GCHI). This station has climatology and live observations only.
Measuring station
| station | airport | fog hours/yr | forecast |
|---|---|---|---|
| GCHI | El Hierro Airport | 5 h/yr | climatology |
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 El Hierro Island fogs in
Fog here concentrates in May and October — about 5 hours in a typical year at GCHI. Hour-by-hour patterns, live conditions and the forecast strip live on the GCHI station page.
Fog season
El Hierro Island has no real fog season — dense fog is rare in every month (under 2 hours even in the peak month).
Machine access: data.json · llms.txt · forecast verification. Not for operational use.