St. Augustine Beach Tides Today
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St. Augustine Beach runs a mean tidal range of about 4.5 ft. This month the highest water, 6.5 ft, comes on the morning of Oct 28, and the lowest, a -0.1 ft minus tide, on the morning of Oct 27.
| High tide | 12:27 AM | 4.7 ft |
| Low tide | 6:28 AM | 0.5 ft |
| High tide | 12:56 PM | 5.9 ft |
| Low tide | 7:31 PM | 0.8 ft |
Today on the water at St. Augustine Beach
Today at St. Augustine Beach: high tide at 12:27 AM (4.7 ft) and 12:56 PM (5.9 ft), low tide at 6:28 AM (0.5 ft) and 7:31 PM (0.8 ft). The National Weather Service forecast for today is mostly cloudy with E winds 15 to 23 mph, 77°F. Wind that strong can hold water in or push it out, so the real tide may run above or below these predictions. In effect now: Small Craft Advisory. Sunrise is at 7:37 AM and sunset at 6:40 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Today | Mostly Cloudy | E 15 to 23 mph | 77°F |
| Tonight | Mostly Cloudy then Slight Chance Rain Showers | E 23 mph | 73°F |
Forecast: National Weather Service point forecast for this location.
Where St. Augustine Beach is
St. Augustine Beach sits at 29.8567° N, 81.2633° W on Florida's Atlantic coast, at St. Augustine Beach, FL. The station here is a historical NOAA reference station: a gauge measured the tide at this spot from 1992 until 2004, and NOAA still publishes harmonic predictions from that record. There is no live reading here today. The closest gauge measuring live water level is I-295 bridge (west end) (NOAA 8720357), 34.4 mi away, and high and low water here run on average about 203 min earlier than there.
The tide at St. Augustine Beach
St. Augustine Beach has a semidiurnal tide: two highs and two lows a day of about the same size, roughly 12 hours 25 minutes apart. This month's predictions average 1.9 high tides a day here. The mean range from lower low to higher high is 5.2 ft, and 4.6 ft between the average high and the average low, a moderate tide. On an average day the higher high tops the lower high by 0.4 ft and the lower low sits 0.2 ft below the other low. For the water around it: Florida's Atlantic tides are semidiurnal, two highs and two lows a day, with ranges of 2 to 5 ft that shrink inside the lagoons.
About this station
- High tide reaches St. Augustine Beach about 0.5 hours after the moon passes overhead. That lag is local, which is why high water does not line up with the moon.
- Highest water on record: 7.7 ft on Sep 24, 1992.
- Lowest on record: -3.2 ft on Mar 13, 1993.
Datum and source
Heights on this page are feet above mean lower low water (MLLW), the zero NOAA's nautical charts use for soundings. A predicted 0.0 ft low is the average of the lower low each day; a minus tide is water below chart datum, and a 2 ft high means 2 ft more water than the chart shows. NOAA fixes MLLW at St. Augustine Beach from the 1983-2001 National Tidal Datum Epoch; mean higher high water is 5.1 ft above it and mean sea level 2.4 ft. The land survey datum NAVD88, the zero on topographic maps and flood maps, is 3.1 ft above MLLW here, so a water level on this page converts to NAVD88 by subtracting that amount. These datums are controlled from NOAA's Mayport (Ferry Depot), FL gauge. Source: NOAA CO-OPS station 8720587, established 1992, gauge removed 2004. The tide times and heights are NOAA's official harmonic predictions for this station; TidalMap republishes them daily and does not alter them.
Tide stations near St. Augustine Beach
- State Road 312, Matanzas River: 2.7 mi, tides about 43 min later
- St. Augustine, city dock: 3.7 mi, tides about 30 min later
- Vilano Beach, Tolomato River: 4.7 mi, tides about 28 min later
- Crescent Beach, Matanzas River: 6.1 mi, tides about 89 min later
- Palmetto Bluff: 19.0 mi, tides about 294 min earlier
TidalMapMonthly tide calendar
🌊 Biggest flood tides at St. Augustine Beach this month: Oct 10, Oct 11, Oct 25, Oct 26, Oct 27, Oct 28, Oct 29, Oct 30. These spring highs push water up into the grass and over the oyster rock; prime for poling into flooded marsh for tailing reds.
🔻 Negative (minus) low tides at St. Augustine Beach this month: Oct 27, Oct 28. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.
Best fishing times (solunar)
Major and minor solunar windows for St. Augustine Beach, peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).
| Day | Major windows | Minor windows | Score |
|---|---|---|---|
| Today 🌖 | 5:04–7:04 AM 5:29–7:29 PM | 10:51–12:51 AM 12:24–2:24 PM | 55 |
| Sun Nov 1 🌗 | 6:05–8:05 AM 6:30–8:30 PM | — 1:11–3:11 PM | 42 |
| Mon Nov 2 🌗 | 7:00–9:00 AM 7:25–9:25 PM | 12:01–2:01 AM 1:50–3:50 PM | 33 |
| Tue Nov 3 🌗 | 7:52–9:52 AM 8:17–10:17 PM | 1:09–3:09 AM 2:25–4:25 PM | 47 |
| Wed Nov 4 🌗 | 8:40–10:40 AM 9:05–11:05 PM | 2:14–4:14 AM 2:57–4:57 PM | 60 |
| Thu Nov 5 🌘 | 9:25–11:25 AM 9:50–11:50 PM | 3:16–5:16 AM 3:27–5:27 PM | 73 |
| Fri Nov 6 🌘 | 10:10–12:10 PM 10:35–12:35 AM | 4:16–6:16 AM 3:57–5:57 PM | 83 |
Predictions & observations: NOAA CO-OPS station 8720587. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.
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