Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

67°
H -°
L 63°
SSE
4mph
Low tide
3:25 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, August 24, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 00m at 3:25 am (1.1 ft)
Next high tide : 9:36 am (7.0 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 5:58 am
Moon phase : Waxing Gibbous (88% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Mar 1930

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:528.55:380.56:020.26:195:31New Moon1Sat
2Sun12:158.012:288.46:140.36:340.26:185:32Waxing Crescent2Sun
3Mon12:488.21:058.36:510.27:070.36:165:33Waxing Crescent3Mon
4Tue1:218.31:448.17:300.27:440.46:145:34Waxing Crescent4Tue
5Wed1:588.42:267.88:130.28:250.66:135:36Waxing Crescent5Wed
6Thu2:408.53:157.59:010.39:120.86:115:37First Quarter6Thu
7Fri3:298.44:107.29:560.410:061.06:095:38First Quarter7Fri
8Sat4:268.45:147.010:580.511:081.26:075:39First Quarter8Sat
9Sun5:318.46:257.012:060.56:065:41First Quarter9Sun
10Mon6:428.57:367.312:171.11:170.26:045:42Waxing Gibbous10Mon
11Tue7:528.98:417.81:280.92:22-0.26:025:43Waxing Gibbous11Tue
12Wed8:579.39:388.42:340.43:20-0.76:005:44Waxing Gibbous12Wed
13Thu9:559.710:309.03:34-0.24:13-1.05:595:45Full Moon13Thu
14Fri10:499.911:199.44:29-0.75:02-1.25:575:47Full Moon14Fri
15Sat11:409.95:21-1.15:49-1.25:555:48Full Moon15Sat
16Sun12:069.612:309.76:12-1.26:35-1.05:535:49Waning Gibbous16Sun
17Mon12:519.61:189.37:01-1.17:20-0.55:525:50Waning Gibbous17Mon
18Tue1:369.42:078.77:50-0.88:050.05:505:51Waning Gibbous18Tue
19Wed2:229.12:578.28:40-0.48:530.65:485:53Waning Gibbous19Wed
20Thu3:098.73:497.69:330.19:431.15:465:54Third Quarter20Thu
21Fri4:008.34:457.110:290.610:371.55:455:55Third Quarter21Fri
22Sat4:557.95:436.811:271.011:351.85:435:56Third Quarter22Sat
23Sun5:547.66:446.712:281.25:415:57Third Quarter23Sun
24Mon6:557.67:436.812:361.91:281.25:395:59Waning Crescent24Mon
25Tue7:527.78:347.01:351.82:211.15:376:00Waning Crescent25Tue
26Wed8:437.99:187.32:281.63:060.95:366:01Waning Crescent26Wed
27Thu9:288.19:577.73:141.23:450.75:346:02Waning Crescent27Thu
28Fri10:098.310:338.03:550.84:200.55:326:03New Moon28Fri
29Sat10:488.411:068.34:340.54:530.45:306:04New Moon29Sat
30Sun11:268.411:408.55:110.25:260.45:296:06New Moon30Sun
31Mon12:038.35:490.06:010.45:276:07New Moon31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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Common Questions About Seavey Island, NH Tides

Collapse All
Is this week a spring tide or neap tide in Seavey Island, NH?

Seavey Island, NH is currently in a spring phase. Tonight's moon is 88% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Seavey Island, NH tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Seavey Island, NH?

Tide predictions for Seavey Island, NH come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Seavey Island, NH?

Tide data for Seavey Island, NH is sourced from NOAA Station #8419870. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8419870.

What is the moon phase in Seavey Island, NH tonight?

Tonight the moon over Seavey Island, NH is Waxing Gibbous (88% illuminated). This places Seavey Island, NH in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

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