Today's high and low tide times for St Augustine, FL, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In St Augustine, FL, the next high tide is at 11:55 PM (5.6ft) and the next low tide is at 6:16 AM (1.3ft), based on harmonic predictions for St. Augustine, city dock.
All high and low tides for St Augustine today, in local time (America/New York). Heights are metres above chart datum.
High (H) and low (L) tide times and heights for the next seven days at St Augustine.
| Date | Tides (local time · height) |
|---|---|
| Tue, Sep 15 | H 11:55 PM 5.6ftL 6:16 AM 1.3ftH 12:04 PM 4.8ftL 6:22 PM 1.0ft |
| Wed, Sep 16 | H 12:37 AM 5.4ftL 7:04 AM 1.7ftH 12:49 PM 4.5ftL 7:04 PM 1.3ft |
| Thu, Sep 17 | H 1:25 AM 5.2ftL 7:55 AM 1.9ftH 1:34 PM 4.2ftL 7:46 PM 1.6ft |
| Fri, Sep 18 | H 2:16 AM 5.1ftL 8:46 AM 2.2ftH 2:28 PM 3.9ftL 8:37 PM 1.9ft |
| Sat, Sep 19 | H 3:10 AM 4.9ftL 9:43 AM 2.3ftH 3:31 PM 3.8ftL 9:31 PM 2.0ft |
| Sun, Sep 20 | H 4:07 AM 4.9ftL 10:40 AM 2.3ftH 4:31 PM 3.9ftL 10:28 PM 2.1ft |
| Mon, Sep 21 | H 5:01 AM 4.9ftL 11:31 AM 2.1ftH 5:28 PM 4.1ftL 11:25 PM 2.0ft |
| Tue, Sep 22 | H 5:49 AM 5.0ftL 12:19 PM 1.8ftH 6:19 PM 4.3ft |
Predicted for St. Augustine, city dock, 0.5 km away (reliability: high — a close match — expect predictions within a few minutes of the published station table). Heights and times are that station's own published offsets applied to harmonic constituents from Fernandina Beach, Amelia River, its reference station 87.6 km away.
These are astronomical tide predictions — the rise and fall driven by the moon and sun, computed by harmonic analysis. They do not include weather effects: a strong onshore wind, low barometric pressure or a storm surge can push the real water level above the predicted high, and offshore winds or high pressure can hold it below the predicted low. For navigation or any safety-critical decision, always check the official tide tables and a live water-level gauge for St Augustine.
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