Today's high and low tide times for Nantucket, MA, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Nantucket, MA, the next high tide is at 3:30 AM (1.26 m) and the next low tide is at 9:24 AM (0.14 m), based on harmonic predictions for NANTUCKET.
All high and low tides for Nantucket 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 Nantucket.
| Date | Tides (local time · height) |
|---|---|
| Sun, Aug 16 | H 3:30 AM 1.26 mL 9:24 AM 0.14 mH 3:57 PM 1.15 mL 9:36 PM 0.18 m |
| Mon, Aug 17 | H 4:18 AM 1.24 mL 10:15 AM 0.16 mH 4:51 PM 1.07 mL 10:21 PM 0.25 m |
| Tue, Aug 18 | H 5:06 AM 1.22 mL 11:09 AM 0.18 mH 5:48 PM 1.00 mL 11:03 PM 0.32 m |
| Wed, Aug 19 | H 5:54 AM 1.20 mL 12:06 PM 0.21 mH 6:48 PM 0.93 mL 11:51 PM 0.39 m |
| Thu, Aug 20 | H 6:45 AM 1.17 mL 1:00 PM 0.23 mH 7:51 PM 0.89 m |
| Fri, Aug 21 | L 12:36 AM 0.44 mH 7:36 AM 1.14 mL 1:57 PM 0.25 mH 8:51 PM 0.86 m |
| Sat, Aug 22 | L 1:27 AM 0.48 mH 8:27 AM 1.12 mL 2:51 PM 0.25 mH 9:45 PM 0.85 m |
Predicted from NANTUCKET, 0.3 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 Nantucket.
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