Fog in Rio Grande

daily fog outlook & 2016–2026 climatology
No fog forecast feed exists for this station. August typically brings about 23 hours of dense fog here (10-year average).

Measured at Gobernador Ramón Trejo Noel International Airport (SAWE). This station has climatology and live observations only.

Measuring station

stationairportfog hours/yrforecast
SAWEGobernador Ramón Trejo Noel International Airport168 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 Rio Grande fogs in

Fog here concentrates in June and July — about 168 hours in a typical year at SAWE, usually lasting ~2 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the SAWE station page.

Fog season

January: ~3 hJanFebruary: ~9 hFebMarch: ~7 hMarApril: ~13 hAprMay: ~27 hMayJune: ~34 hJunJuly: ~31 hJulAugust: ~23 hAugSeptember: ~10 hSepOctober: ~6 hOctNovember: ~6 hNovDecember: ~2 hDec
Fog season is February, April, May, June, July, August, September, peaking in June; fog here can hit at any hour of the day; a typical event lasts about 2 hours once it forms local time · 10-yr average

Machine access: data.json · llms.txt · forecast verification. Not for operational use.