Extreme Heat Risk this Week
Extreme heat and little overnight relief will lead to an extreme risk for heat-related impacts through the rest of the week. Extreme Heat Warning in effect on Tuesday. Read More >
| NWS Forecast for: Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM (AMZ450) Issued by: National Weather Service Jacksonville, FL Last Update: 226 PM EDT Wed Aug 19 2026 | |
| Rest Of Today: Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: east 2 feet at 10 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms. Tonight: Southwest winds 5 to 10 knots. Seas around 2 feet. Wave detail: east 2 feet at 9 seconds. Intracoastal waters light chop. Thursday: Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 3 seconds and east 2 feet at 9 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon. Thursday Night: South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave detail: south 2 feet at 4 seconds. Intracoastal waters a moderate chop. Friday: South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the afternoon. Friday Night: Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the evening. Saturday Through Sunday: Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. winds and waves higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM (AMZ450) | |
Visit your local NWS office at: https://www.weather.gov/jax |