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 8:54 AM (1.32 m) and the next low tide is at 2:36 AM (0.07 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) |
|---|---|
| Wed, Jul 15 | L 2:36 AM 0.07 mH 8:54 AM 1.32 mL 3:12 PM 0.04 mH 9:21 PM 1.23 m |
| Thu, Jul 16 | L 3:27 AM 0.07 mH 9:42 AM 1.29 mL 3:57 PM 0.06 mH 10:09 PM 1.23 m |
| Fri, Jul 17 | L 4:15 AM 0.10 mH 10:30 AM 1.23 mL 4:39 PM 0.10 mH 10:57 PM 1.21 m |
| Sat, Jul 18 | L 5:06 AM 0.14 mH 11:18 AM 1.16 mL 5:24 PM 0.15 mH 11:45 PM 1.18 m |
| Sun, Jul 19 | L 5:57 AM 0.19 mH 12:09 PM 1.08 mL 6:09 PM 0.21 m |
| Mon, Jul 20 | H 12:36 AM 1.14 mL 6:54 AM 0.25 mH 1:00 PM 1.00 mL 6:57 PM 0.28 m |
| Tue, Jul 21 | H 1:30 AM 1.10 mL 8:00 AM 0.30 mH 1:57 PM 0.93 mL 7:51 PM 0.33 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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