Marine Weather and Tide Forecast for St. Augustine, FL
 | Sunrise 6:30 AM Sunset 8:31 PM Moonrise 7:00 PM Moonset 4:02 AM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
AMZ454 Expires:202507091530;;117166 Fzus52 Kjax 090112 Aaa Cwfjax
coastal waters forecast for northeast florida/southeast georgia - .updated national weather service jacksonville fl 908 pm edt Tue jul 8 2025
atlantic coastal waters from altamaha sound ga to flagler beach fl out to 60 nm.
seas are provided as a range of the average height of the highest 1/3 of the waves, along with the occasional height of the average highest 1/10 of the waves.
amz450-452-454-091530- coastal waters from altamaha sound to fernandina beach fl out 20 nm- coastal waters from fernandina beach to st. Augustine fl out 20 nm- coastal waters from st. Augustine to flagler beach fl out 20 nm- 908 pm edt Tue jul 8 2025
Rest of tonight - South winds around 15 knots, becoming southwest 5 to 10 knots toward Sunrise. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms.
Wednesday - Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas around 2 feet. Wave detail: southeast 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and Thunderstorms.
Wednesday night - South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms, mainly in the evening.
Thursday - Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms in the morning, then a 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: southeast 3 feet at 7 seconds and south 2 feet at 4 seconds. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms in the evening.
Friday - Southwest 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 8 seconds. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms in the morning, then a chance of showers and Thunderstorms in the afternoon.
Friday night - South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of Thunderstorms in the evening. A slight chance of showers.
Saturday through Sunday - Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. A chance of showers and Thunderstorms.
winds and waves higher in and near Thunderstorms.
coastal waters forecast for northeast florida/southeast georgia - .updated national weather service jacksonville fl 908 pm edt Tue jul 8 2025
atlantic coastal waters from altamaha sound ga to flagler beach fl out to 60 nm.
seas are provided as a range of the average height of the highest 1/3 of the waves, along with the occasional height of the average highest 1/10 of the waves.
amz450-452-454-091530- coastal waters from altamaha sound to fernandina beach fl out 20 nm- coastal waters from fernandina beach to st. Augustine fl out 20 nm- coastal waters from st. Augustine to flagler beach fl out 20 nm- 908 pm edt Tue jul 8 2025
winds and waves higher in and near Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 908 Pm Edt Tue Jul 8 2025
Synopsis -
high pressure extending across central florida and a surface trough across georgia will bring prevailing southwest winds, shifting onshore each afternoon as the atlantic sea breeze moves inland. Scattered showers and storms will move offshore of the coast in the afternoon and early evening. Some storms may produce strong gusty winds and frequent lightning.
Gulf stream -
the approximate location of the west wall of the gulf stream as of jul 08, 2025 at 1200 utc - .
50 nautical miles east of flagler beach. 59 nautical miles east of saint augustine beach. 75 nautical miles east of jacksonville beach. 94 nautical miles east of st simons island.
this data courtesy of the naval oceanographic office.
high pressure extending across central florida and a surface trough across georgia will bring prevailing southwest winds, shifting onshore each afternoon as the atlantic sea breeze moves inland. Scattered showers and storms will move offshore of the coast in the afternoon and early evening. Some storms may produce strong gusty winds and frequent lightning.
the approximate location of the west wall of the gulf stream as of jul 08, 2025 at 1200 utc - .
50 nautical miles east of flagler beach. 59 nautical miles east of saint augustine beach. 75 nautical miles east of jacksonville beach. 94 nautical miles east of st simons island.
this data courtesy of the naval oceanographic office.
7 Day Forecast for Marine Location Near St. Augustine, FL
NEW! Add second zone forecast
| St. Augustine Click for Map Tue -- 01:34 AM EDT 0.63 feet Low Tide Tue -- 04:10 AM EDT Moonset Tue -- 06:31 AM EDT Sunrise Tue -- 07:10 AM EDT 3.36 feet High Tide Tue -- 01:14 PM EDT 0.18 feet Low Tide Tue -- 07:06 PM EDT Moonrise Tue -- 07:40 PM EDT 4.76 feet High Tide Tue -- 08:29 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
St. Augustine, city dock, Florida, Tide feet
| 12 am |
| 1.2 |
| 1 am |
| 0.7 |
| 2 am |
| 0.7 |
| 3 am |
| 1.1 |
| 4 am |
| 1.7 |
| 5 am |
| 2.5 |
| 6 am |
| 3.1 |
| 7 am |
| 3.4 |
| 8 am |
| 3.2 |
| 9 am |
| 2.6 |
| 10 am |
| 1.9 |
| 11 am |
| 1.1 |
| 12 pm |
| 0.5 |
| 1 pm |
| 0.2 |
| 2 pm |
| 0.3 |
| 3 pm |
| 1 |
| 4 pm |
| 1.9 |
| 5 pm |
| 3 |
| 6 pm |
| 4 |
| 7 pm |
| 4.6 |
| 8 pm |
| 4.7 |
| 9 pm |
| 4.3 |
| 10 pm |
| 3.5 |
| 11 pm |
| 2.5 |
| East Tocoi Click for Map Tue -- 01:09 AM EDT 5.89 feet High Tide Tue -- 04:11 AM EDT Moonset Tue -- 06:32 AM EDT Sunrise Tue -- 07:50 AM EDT 5.06 feet Low Tide Tue -- 01:18 PM EDT 5.76 feet High Tide Tue -- 07:07 PM EDT Moonrise Tue -- 07:59 PM EDT 4.94 feet Low Tide Tue -- 08:30 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
East Tocoi, St. Johns River, Florida, Tide feet
| 12 am |
| 5.8 |
| 1 am |
| 5.9 |
| 2 am |
| 5.8 |
| 3 am |
| 5.7 |
| 4 am |
| 5.5 |
| 5 am |
| 5.4 |
| 6 am |
| 5.2 |
| 7 am |
| 5.1 |
| 8 am |
| 5.1 |
| 9 am |
| 5.2 |
| 10 am |
| 5.4 |
| 11 am |
| 5.6 |
| 12 pm |
| 5.7 |
| 1 pm |
| 5.8 |
| 2 pm |
| 5.7 |
| 3 pm |
| 5.6 |
| 4 pm |
| 5.4 |
| 5 pm |
| 5.2 |
| 6 pm |
| 5.1 |
| 7 pm |
| 5 |
| 8 pm |
| 4.9 |
| 9 pm |
| 5 |
| 10 pm |
| 5.3 |
| 11 pm |
| 5.5 |
Area Discussion for Jacksonville, FL
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FXUS62 KJAX 090609 AFDJAX
Area Forecast Discussion National Weather Service Jacksonville FL 209 AM EDT Wed Jul 9 2025
New NEAR TERM, SHORT TERM, LONG TERM, AVIATION, MARINE, HYDROLOGY
NEAR TERM
Issued at 206 AM EDT Wed Jul 9 2025
For the latest NE FL and SE GA Daily Key Messages please visit: https:// www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf
Mostly cloudy and cooler today with multilayered clouds across the area as a broad mid level low migrates from across SE GA early this morning toward the NE Gulf, then begins to slowly shift eastward across the local area this evening. Weak SW steering flow < 10 kts with high moisture (PWATs nearing 2.2 inches) will continue to fuel scattered to numerous showers and storms today, while the presence of the cooler temperatures aloft with the upper level low will bring an increased strong to isolated severe storm risk. The ingredients for precipitation are in place, but convective evolution is a little trickier and not completely diurnally driven today with the upper level low.
With the upper low and high moisture, expect an increase in convection across the Suwannee River Valley and SE GA through the morning hours under SW flow, with more diurnally driven convection across NE FL east of Highway 301 toward the coast in the afternoon and into the evening where the east coast sea breeze and boundaries coverage.
As evident by morning radar, weak steering flow will bring slow and erratic storm motion. With morning convection across much of SE GA and the Suwannee River Valley, instability will be tempered somewhat limiting strong to severe storm risk, but, localized flooding rainfall will be possible. At this time, the Weather Prediction Center has a Marginal Risk of Excessive Rainfall for our area. The better risk for severe storms capable of wet downbursts of 40-60 mph will be this afternoon and into the evening, especially for locations west of Highway 301 toward the Atlantic coast where more diurnal instability can build and the east coast sea breeze moving inland provides added lift/convergence.
Rainfall coverage will gradually dwindle through the night as the upper level slowly edges eastward across the area with stronger lift shifting offshore of the local coast. SW flow continues, so early morning Gulf Coast convection edging inland is expected once again.
High temperatures will trend 'cooler' today in the upper 80s to low 90s given cloud cover and early onset convection for our inland zones. Overnight lows continue to range in the 70s.
SHORT TERM
(Thursday through Friday night)
Issued at 206 AM EDT Wed Jul 9 2025
Weaker southwest flow will continue Thursday and Friday, bringing in plenty of moisture off the Gulf. Numerous showers and storms are expected to develop in the afternoons and evenings as sea breezes push inland and boundaries interact. With increased cloud cover and storms, temperatures will near normal, with highs generally in the lower 90s on Thursday before heating up again Friday.
LONG TERM
(Saturday through Tuesday)
Issued at 206 AM EDT Wed Jul 9 2025
It'll be a hot weekend, with highs rising into the mid to upper 90s with a little less cloud cover in place. Heat indices will generally max out around 100-105 degrees, although depending on timing of convection, some locations may see heat indices above 105 this weekend. By Tuesday, temperatures will start a downward trend back into the upper 80s/low 90s. Rinse-and-repeat forecast Saturday through Tuesday with diurnal storms popping up each afternoon, although with W/NW flow this weekend, PWATs and precipitation chances will be a bit lower than we've seen recently.
AVIATION
(06Z TAFS)
Issued at 206 AM EDT Wed Jul 9 2025
VCSH for SSI early this morning with showers and storms breaking out inland under an mid level low. Farther south across NE FL terminals, multilayered clouds will continue through the morning under SSW winds < 8 kts. Still expect an east coast sea breeze at SSI, CRG and SGJ mid afternoon, with VCTS at all terminals mid afternoon into the early evening with weak storm motion making convection slowly dissipate. TEMPO groups will be added as needed based on radar trends later today for TS and associated heavy rainfall restrictions.
MARINE
Issued at 206 AM EDT Wed Jul 9 2025
High pressure extending across central Florida and a surface trough across Georgia will bring prevailing southwest winds, shifting onshore each afternoon as the Atlantic sea breeze moves inland. Scattered showers and storms will move offshore of the coast in the afternoon and early evening. Some storms may produce strong gusty winds and frequent lightning.
Rip Currents: Moderate risk today and Thu for NE FL beaches and low risk for SE GA beaches as easterly swells have fallen compared to previous days. The rip current risk will be greater in the afternoon as SE winds develop with the sea breeze.
PRELIMINARY POINT TEMPS/POPS
AMG 90 73 92 73 / 60 40 60 20 SSI 88 77 90 77 / 50 30 50 20 JAX 92 74 93 75 / 50 30 60 10 SGJ 90 75 92 75 / 50 30 50 10 GNV 91 73 93 72 / 60 20 60 10 OCF 91 74 92 73 / 50 20 60 10
JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.
Area Forecast Discussion National Weather Service Jacksonville FL 209 AM EDT Wed Jul 9 2025
New NEAR TERM, SHORT TERM, LONG TERM, AVIATION, MARINE, HYDROLOGY
NEAR TERM
Issued at 206 AM EDT Wed Jul 9 2025
For the latest NE FL and SE GA Daily Key Messages please visit: https:// www.weather.gov/media/jax/briefings/nws-jax-briefing.pdf
Mostly cloudy and cooler today with multilayered clouds across the area as a broad mid level low migrates from across SE GA early this morning toward the NE Gulf, then begins to slowly shift eastward across the local area this evening. Weak SW steering flow < 10 kts with high moisture (PWATs nearing 2.2 inches) will continue to fuel scattered to numerous showers and storms today, while the presence of the cooler temperatures aloft with the upper level low will bring an increased strong to isolated severe storm risk. The ingredients for precipitation are in place, but convective evolution is a little trickier and not completely diurnally driven today with the upper level low.
With the upper low and high moisture, expect an increase in convection across the Suwannee River Valley and SE GA through the morning hours under SW flow, with more diurnally driven convection across NE FL east of Highway 301 toward the coast in the afternoon and into the evening where the east coast sea breeze and boundaries coverage.
As evident by morning radar, weak steering flow will bring slow and erratic storm motion. With morning convection across much of SE GA and the Suwannee River Valley, instability will be tempered somewhat limiting strong to severe storm risk, but, localized flooding rainfall will be possible. At this time, the Weather Prediction Center has a Marginal Risk of Excessive Rainfall for our area. The better risk for severe storms capable of wet downbursts of 40-60 mph will be this afternoon and into the evening, especially for locations west of Highway 301 toward the Atlantic coast where more diurnal instability can build and the east coast sea breeze moving inland provides added lift/convergence.
Rainfall coverage will gradually dwindle through the night as the upper level slowly edges eastward across the area with stronger lift shifting offshore of the local coast. SW flow continues, so early morning Gulf Coast convection edging inland is expected once again.
High temperatures will trend 'cooler' today in the upper 80s to low 90s given cloud cover and early onset convection for our inland zones. Overnight lows continue to range in the 70s.
SHORT TERM
(Thursday through Friday night)
Issued at 206 AM EDT Wed Jul 9 2025
Weaker southwest flow will continue Thursday and Friday, bringing in plenty of moisture off the Gulf. Numerous showers and storms are expected to develop in the afternoons and evenings as sea breezes push inland and boundaries interact. With increased cloud cover and storms, temperatures will near normal, with highs generally in the lower 90s on Thursday before heating up again Friday.
LONG TERM
(Saturday through Tuesday)
Issued at 206 AM EDT Wed Jul 9 2025
It'll be a hot weekend, with highs rising into the mid to upper 90s with a little less cloud cover in place. Heat indices will generally max out around 100-105 degrees, although depending on timing of convection, some locations may see heat indices above 105 this weekend. By Tuesday, temperatures will start a downward trend back into the upper 80s/low 90s. Rinse-and-repeat forecast Saturday through Tuesday with diurnal storms popping up each afternoon, although with W/NW flow this weekend, PWATs and precipitation chances will be a bit lower than we've seen recently.
AVIATION
(06Z TAFS)
Issued at 206 AM EDT Wed Jul 9 2025
VCSH for SSI early this morning with showers and storms breaking out inland under an mid level low. Farther south across NE FL terminals, multilayered clouds will continue through the morning under SSW winds < 8 kts. Still expect an east coast sea breeze at SSI, CRG and SGJ mid afternoon, with VCTS at all terminals mid afternoon into the early evening with weak storm motion making convection slowly dissipate. TEMPO groups will be added as needed based on radar trends later today for TS and associated heavy rainfall restrictions.
MARINE
Issued at 206 AM EDT Wed Jul 9 2025
High pressure extending across central Florida and a surface trough across Georgia will bring prevailing southwest winds, shifting onshore each afternoon as the Atlantic sea breeze moves inland. Scattered showers and storms will move offshore of the coast in the afternoon and early evening. Some storms may produce strong gusty winds and frequent lightning.
Rip Currents: Moderate risk today and Thu for NE FL beaches and low risk for SE GA beaches as easterly swells have fallen compared to previous days. The rip current risk will be greater in the afternoon as SE winds develop with the sea breeze.
PRELIMINARY POINT TEMPS/POPS
AMG 90 73 92 73 / 60 40 60 20 SSI 88 77 90 77 / 50 30 50 20 JAX 92 74 93 75 / 50 30 60 10 SGJ 90 75 92 75 / 50 30 50 10 GNV 91 73 93 72 / 60 20 60 10 OCF 91 74 92 73 / 50 20 60 10
JAX WATCHES/WARNINGS/ADVISORIES
FL...None.
GA...None.
AM...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| SAUF1 - St. Augustine, FL | 3 mi | 100 min | SSW 7G | 80°F | 30.14 | 75°F | ||
| 41117 | 15 mi | 74 min | 79°F | 2 ft | ||||
| GTXF1 - Guana Tolomato Matanzas Reserve, FL | 16 mi | 115 min | S 2.9 | 78°F | 30.15 | 76°F | ||
| BKBF1 | 30 mi | 100 min | SW 6G | 82°F | 30.12 | |||
| LTJF1 | 35 mi | 100 min | 80°F | 76°F | ||||
| JXUF1 | 36 mi | 100 min | 85°F | |||||
| MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL | 36 mi | 100 min | SSW 4.1G | 80°F | 80°F | 30.14 | ||
| BLIF1 | 37 mi | 100 min | SSW 7G | 81°F | 30.13 | |||
| DMSF1 | 37 mi | 100 min | 83°F | |||||
| NFDF1 | 40 mi | 100 min | SSW 6G | 82°F | 30.11 | 82°F | ||
| 41069 | 49 mi | 92 min | SW 7.8G | 81°F | 81°F | 30.12 | 79°F | |
| 41070 | 49 mi | 120 min | 81°F | 2 ft |
Wind History for I-295 Bridge, St Johns River, FL
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KSGJ
Terminal Aerodrome Forecast (TAF) for KSGJ
Wind History Graph: SGJ
(wind in knots)
GEOS Local Image of southeast
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Jacksonville, FL,
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