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 11:52 AM (1.65 m) and the next low tide is at 5:55 AM (0.26 m), based on harmonic predictions for Fernandina Beach, Amelia River.
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) |
|---|---|
| Sun, Aug 16 | L 5:55 AM 0.26 mH 11:52 AM 1.65 mL 6:13 PM 0.22 m |
| Mon, Aug 17 | H 12:22 AM 1.71 mL 6:43 AM 0.35 mH 12:37 PM 1.54 mL 6:55 PM 0.31 m |
| Tue, Aug 18 | H 1:10 AM 1.66 mL 7:34 AM 0.44 mH 1:25 PM 1.43 mL 7:40 PM 0.40 m |
| Wed, Aug 19 | H 2:01 AM 1.60 mL 8:28 AM 0.53 mH 2:19 PM 1.33 mL 8:28 PM 0.49 m |
| Thu, Aug 20 | H 2:55 AM 1.55 mL 9:22 AM 0.61 mH 3:16 PM 1.25 mL 9:19 PM 0.57 m |
| Fri, Aug 21 | H 3:49 AM 1.52 mL 10:22 AM 0.65 mH 4:16 PM 1.21 mL 10:13 PM 0.61 m |
| Sat, Aug 22 | H 4:46 AM 1.51 mL 11:19 AM 0.65 mH 5:16 PM 1.21 mL 11:07 PM 0.62 m |
Predicted from Fernandina Beach, Amelia River, 0.5 km away (reliability: high — a close match — expect predictions within a few minutes of the published station table).
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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