Today's high and low tide times for Block Island, RI, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Block Island, RI, the next high tide is at 8:21 AM (1.17 m) and the next low tide is at 1:57 AM (0.22 m), based on harmonic predictions for Block Island (Old Harbor).
All high and low tides for Block Island 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 Block Island.
| Date | Tides (local time · height) |
|---|---|
| Sun, May 31 | L 1:57 AM 0.22 mH 8:21 AM 1.17 mL 2:45 PM 0.25 mH 8:39 PM 0.99 m |
| Mon, Jun 1 | L 2:27 AM 0.23 mH 9:00 AM 1.16 mL 3:15 PM 0.27 mH 9:15 PM 0.98 m |
| Tue, Jun 2 | L 3:00 AM 0.24 mH 9:39 AM 1.14 mL 3:45 PM 0.29 mH 9:54 PM 0.97 m |
| Wed, Jun 3 | L 3:33 AM 0.24 mH 10:18 AM 1.11 mL 4:18 PM 0.30 mH 10:36 PM 0.96 m |
| Thu, Jun 4 | L 4:12 AM 0.26 mH 11:00 AM 1.08 mL 4:54 PM 0.31 mH 11:18 PM 0.96 m |
| Fri, Jun 5 | L 4:57 AM 0.27 mH 11:48 AM 1.05 mL 5:36 PM 0.31 m |
| Sat, Jun 6 | H 12:09 AM 0.97 mL 5:48 AM 0.29 mH 12:39 PM 1.02 mL 6:27 PM 0.31 m |
Predicted from Block Island (Old Harbor), 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 Block Island.
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