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 9:52 AM (1.90 m) and the next low tide is at 3:43 AM (0.08 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) |
|---|---|
| Wed, Jul 15 | L 3:43 AM 0.08 mH 9:52 AM 1.90 mL 4:19 PM 0.09 mH 10:16 PM 1.74 m |
| Thu, Jul 16 | L 4:34 AM 0.10 mH 10:40 AM 1.86 mL 5:07 PM 0.11 mH 11:07 PM 1.74 m |
| Fri, Jul 17 | L 5:25 AM 0.14 mH 11:28 AM 1.80 mL 5:55 PM 0.16 m |
| Sat, Jul 18 | H 11:55 PM 1.72 mL 6:16 AM 0.21 mH 12:19 PM 1.71 mL 6:43 PM 0.23 m |
| Sun, Jul 19 | H 12:46 AM 1.68 mL 7:07 AM 0.29 mH 1:10 PM 1.61 mL 7:31 PM 0.31 m |
| Mon, Jul 20 | H 1:40 AM 1.64 mL 8:01 AM 0.38 mH 2:04 PM 1.51 mL 8:19 PM 0.39 m |
| Tue, Jul 21 | H 2:34 AM 1.60 mL 8:58 AM 0.46 mH 2:58 PM 1.42 mL 9:10 PM 0.47 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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