Today's high and low tide times for Boston, MA, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Boston, MA, the next high tide is at 2:39 AM (12.0ft) and the next low tide is at 8:57 AM (1.4ft), based on harmonic predictions for BOSTON.
All high and low tides for Boston 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 Boston.
| Date | Tides (local time · height) |
|---|---|
| Tue, Sep 15 | H 2:39 AM 12.0ftL 8:57 AM 1.4ftH 3:06 PM 10.6ftL 9:06 PM 2.2ft |
| Wed, Sep 16 | H 3:21 AM 11.5ftL 9:45 AM 1.8ftH 3:54 PM 9.9ftL 9:48 PM 2.9ft |
| Thu, Sep 17 | H 4:06 AM 11.0ftL 10:36 AM 2.3ftH 4:45 PM 9.2ftL 10:36 PM 3.5ft |
| Fri, Sep 18 | H 4:54 AM 10.5ftL 11:27 AM 2.7ftH 5:42 PM 8.7ftL 11:27 PM 4.1ft |
| Sat, Sep 19 | H 5:45 AM 10.1ftL 12:24 PM 3.0ftH 6:45 PM 8.5ft |
| Sun, Sep 20 | L 12:24 AM 4.4ftH 6:42 AM 9.9ftL 1:21 PM 3.1ftH 7:48 PM 8.5ft |
| Mon, Sep 21 | L 1:21 AM 4.5ftH 7:39 AM 9.8ftL 2:15 PM 3.0ftH 8:42 PM 8.7ft |
| Tue, Sep 22 | L 2:21 AM 4.2ftH 8:36 AM 10.0ftL 3:03 PM 2.8ftH 9:27 PM 9.2ft |
Predicted for BOSTON, 1 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 Boston.
Tides are only half the picture — wind, swell and the bite window matter too.
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