Today's high and low tide times for Portland, ME, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Portland, ME, the next high tide is at 2:09 AM (3.73 m) and the next low tide is at 8:18 AM (0.28 m), based on harmonic predictions for PORTLAND.
All high and low tides for Portland 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 Portland.
| Date | Tides (local time · height) |
|---|---|
| Sun, Aug 16 | H 2:09 AM 3.73 mL 8:18 AM 0.28 mH 2:30 PM 3.56 mL 8:36 PM 0.33 m |
| Mon, Aug 17 | H 2:54 AM 3.63 mL 9:09 AM 0.37 mH 3:18 PM 3.36 mL 9:24 PM 0.54 m |
| Tue, Aug 18 | H 3:39 AM 3.51 mL 9:57 AM 0.49 mH 4:09 PM 3.15 mL 10:09 PM 0.76 m |
| Wed, Aug 19 | H 4:27 AM 3.37 mL 10:51 AM 0.62 mH 5:03 PM 2.96 mL 11:00 PM 0.97 m |
| Thu, Aug 20 | H 5:15 AM 3.23 mL 11:45 AM 0.74 mH 6:03 PM 2.80 mL 11:54 PM 1.14 m |
| Fri, Aug 21 | H 6:09 AM 3.11 mL 12:45 PM 0.81 mH 7:06 PM 2.70 m |
| Sat, Aug 22 | L 12:51 AM 1.25 mH 7:06 AM 3.04 mL 1:42 PM 0.84 mH 8:06 PM 2.68 m |
Predicted from PORTLAND, 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 Portland.
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