Today's high and low tide times for Marathon, FL, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Marathon, FL, the next high tide is at 2:48 AM (0.31 m) and the next low tide is at 9:06 AM (0.04 m), based on harmonic predictions for VACA KEY, USCG STATION, FLORIDA BAY.
All high and low tides for Marathon 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 Marathon.
| Date | Tides (local time · height) |
|---|---|
| Thu, Jul 16 | H 2:48 AM 0.31 mL 9:06 AM 0.04 mH 4:51 PM 0.24 mL 8:39 PM 0.16 m |
| Fri, Jul 17 | H 3:54 AM 0.30 mL 9:45 AM 0.07 mH 5:21 PM 0.24 mL 9:36 PM 0.13 m |
| Sat, Jul 18 | H 5:00 AM 0.28 mL 10:24 AM 0.09 mH 5:51 PM 0.25 mL 10:33 PM 0.11 m |
| Sun, Jul 19 | H 6:09 AM 0.27 mL 11:00 AM 0.12 mH 6:18 PM 0.26 mL 11:30 PM 0.09 m |
| Mon, Jul 20 | H 7:18 AM 0.25 mL 11:33 AM 0.15 mH 6:39 PM 0.26 m |
| Tue, Jul 21 | L 12:27 AM 0.07 mH 8:33 AM 0.24 mL 12:06 PM 0.18 mH 6:15 PM 0.28 m |
| Wed, Jul 22 | L 1:24 AM 0.05 mH 9:48 AM 0.23 mL 12:39 PM 0.20 mH 5:33 PM 0.30 m |
Predicted from VACA KEY, USCG STATION, FLORIDA BAY, 1.6 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 Marathon.
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