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State Road 312, FL - Matanzas River Marine Weather Forecast

Station SAUF1 - St. Augustine, FL

September 20, 2026 1:00 pm EDT
Location: 29.857N 81.264W
Wind Direction: NNE (20°)
Wind Speed: 14.0 knots
Wind Gust: 15.0 knots
Atmospheric Pressure: 29.97 in (1015.0 mb)
Pressure Tendency: -0.01 in (-0.3 mb)
Air Temperature: 80.8°F (27.1°C)
Dew Point: 77.4°F (25.2°C)


This Afternoon - 86°F
Sep 20, 2026
13 mph NE
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 5pm. Mostly cloudy. High near 86, with temperatures falling to around 85 in the afternoon. Northeast wind around 13 mph, with gusts as high as 17 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Tonight - 77°F
Sep 20, 2026
3 to 13 mph SE
Mostly Cloudy
Mostly cloudy, with a low around 77. Southeast wind 3 to 13 mph, with gusts as high as 17 mph.
Monday - 86°F
Sep 21, 2026
6 to 13 mph N
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms. Partly sunny. High near 86, with temperatures falling to around 85 in the afternoon. North wind 6 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Monday Night - 76°F
Sep 21, 2026
2 to 13 mph SE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southeast wind 2 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 40%.
Tuesday - 84°F
Sep 22, 2026
2 to 10 mph N
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny. High near 84, with temperatures falling to around 83 in the afternoon. North wind 2 to 10 mph. Chance of precipitation is 40%.
Tuesday Night - 76°F
Sep 22, 2026
2 to 9 mph E
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.
Wednesday - 83°F
Sep 23, 2026
3 to 14 mph N
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Wednesday Night - 76°F
Sep 23, 2026
7 to 13 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
Thursday - 83°F
Sep 24, 2026
12 to 30 mph NE
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Thursday Night - 75°F
Sep 24, 2026
18 to 29 mph NE
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Friday - 82°F
Sep 25, 2026
18 to 29 mph NE
Chance Showers And Thunderstorms
A slight chance of rain showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Friday Night - 74°F
Sep 25, 2026
12 to 26 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 40%.
Saturday - 82°F
Sep 26, 2026
13 to 23 mph NE
Chance Rain Showers then Chance Showers And Thunderstorms
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 40%.
Saturday Night - 73°F
Sep 26, 2026
10 to 21 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 73.

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