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 12:21 AM (3.65 m) and the next low tide is at 6:21 AM (0.29 m), 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) |
|---|---|
| Wed, Jul 15 | H 12:21 AM 3.65 mL 6:21 AM 0.29 mH 12:36 PM 3.92 mL 6:54 PM 0.00 m |
| Thu, Jul 16 | H 1:09 AM 3.69 mL 7:12 AM 0.26 mH 1:24 PM 3.90 mL 7:42 PM 0.04 m |
| Fri, Jul 17 | H 1:57 AM 3.69 mL 8:03 AM 0.26 mH 2:15 PM 3.81 mL 8:30 PM 0.14 m |
| Sat, Jul 18 | H 2:45 AM 3.65 mL 8:54 AM 0.31 mH 3:06 PM 3.68 mL 9:21 PM 0.29 m |
| Sun, Jul 19 | H 3:36 AM 3.58 mL 9:45 AM 0.39 mH 4:00 PM 3.51 mL 10:09 PM 0.46 m |
| Mon, Jul 20 | H 4:24 AM 3.48 mL 10:39 AM 0.49 mH 4:54 PM 3.33 mL 11:00 PM 0.65 m |
| Tue, Jul 21 | H 5:18 AM 3.37 mL 11:33 AM 0.60 mH 5:51 PM 3.16 mL 11:54 PM 0.83 m |
Predicted from 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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