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 2:39 AM (0.34 m) and the next low tide is at 9:39 AM (0.03 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) |
|---|---|
| Wed, Jun 17 | H 2:39 AM 0.34 mL 9:39 AM 0.03 mH 5:27 PM 0.21 mL 8:33 PM 0.17 m |
| Thu, Jun 18 | H 3:39 AM 0.33 mL 10:24 AM 0.04 mH 6:09 PM 0.21 mL 9:27 PM 0.15 m |
| Fri, Jun 19 | H 4:42 AM 0.32 mL 11:06 AM 0.06 mH 6:45 PM 0.21 mL 10:24 PM 0.14 m |
| Sat, Jun 20 | H 5:54 AM 0.30 mL 11:48 AM 0.09 mH 7:24 PM 0.21 mL 11:24 PM 0.13 m |
| Sun, Jun 21 | H 7:09 AM 0.28 mL 12:30 PM 0.12 mH 8:00 PM 0.22 m |
| Mon, Jun 22 | L 12:27 AM 0.11 mH 8:27 AM 0.27 mL 1:09 PM 0.14 mH 8:36 PM 0.23 m |
| Tue, Jun 23 | L 1:30 AM 0.10 mH 9:42 AM 0.25 mL 1:48 PM 0.17 mH 9:09 PM 0.24 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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