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 11:03 AM (3.2ft) and the next low tide is at 5:03 AM (0.8ft), 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) |
|---|---|
| Tue, Sep 15 | L 5:03 AM 0.8ftH 11:03 AM 3.2ftL 4:48 PM 0.7ftH 11:33 PM 3.8ft |
| Wed, Sep 16 | L 5:51 AM 1.0ftH 11:48 AM 3.0ftL 5:21 PM 0.9ft |
| Thu, Sep 17 | H 12:18 AM 3.6ftL 6:42 AM 1.2ftH 12:39 PM 2.7ftL 6:00 PM 1.1ft |
| Fri, Sep 18 | H 1:09 AM 3.4ftL 7:48 AM 1.4ftH 1:36 PM 2.6ftL 6:45 PM 1.3ft |
| Sat, Sep 19 | H 2:09 AM 3.3ftL 9:09 AM 1.4ftH 2:42 PM 2.5ftL 7:54 PM 1.5ft |
| Sun, Sep 20 | H 3:09 AM 3.2ftL 10:21 AM 1.4ftH 3:48 PM 2.6ftL 9:21 PM 1.5ft |
| Mon, Sep 21 | H 4:06 AM 3.2ftL 11:09 AM 1.2ftH 4:45 PM 2.8ftL 10:39 PM 1.4ft |
| Tue, Sep 22 | H 5:00 AM 3.3ftL 11:45 AM 1.0ftH 5:33 PM 3.0ftL 11:36 PM 1.2ft |
Predicted for 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.
Tides are only half the picture — wind, swell and the bite window matter too.
Fishare reads the tide, weather, light and moon for your spot and pings you when the next 3-hour peak window opens. The forecast, saved spots and catch log stay free, forever.
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