Fog in St Simons Island, GA

daily fog outlook & 2016–2026 climatology
No fog signal in NWS guidance for the next 48 hours. August typically brings about 1 hour of dense fog here.forecast cycle 2026-08-16T00:00:00Z · page rebuilt daily · live layers below update hourly

Measured at St Simons Island Airport (KSSI). This station is in forecast verification — percentages publish when it clears the accuracy bar.

Measuring station

stationairportfog hours/yrforecast
KSSISt Simons Island Airport54 h/yrverifying

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 St Simons Island fogs in

Fog here concentrates in December and January — about 54 hours in a typical year at KSSI, usually lasting ~1 h once it forms. Hour-by-hour patterns, live conditions and the forecast strip live on the KSSI station page.

Fog season

January: ~10 hJanFebruary: ~9 hFebMarch: ~8 hMarApril: ~2 hAprMay: ~1 hMayJune: ~1 hJunJuly: ~1 hJulAugust: ~1 hAugSeptember: ~0 hSepOctober: ~3 hOctNovember: ~6 hNovDecember: ~13 hDec
Fog season runs November through March, peaking in December; fog is mostly a 1 AM–8 AM phenomenon; typically thinning out by 9 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.