Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

73°
H 76°
L 62°
S
9mph
High tide
3:45 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 10:08 pm (0.7 ft)
Next high tide : in 35m at 3:45 pm (8.5 ft)
Sunset today : 6:51 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Aug 1876

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:487.08:538.42:350.92:311.84:377:08Waxing Gibbous1Tue
2Wed9:367.19:398.53:240.83:191.64:387:06Waxing Gibbous2Wed
3Thu10:207.310:218.64:080.64:021.54:397:05Full Moon3Thu
4Fri11:007.511:008.74:470.54:431.34:407:04Full Moon4Fri
5Sat11:377.711:378.85:220.45:211.14:427:03Full Moon5Sat
6Sun12:117.85:560.35:581.04:437:01Full Moon6Sun
7Mon12:148.812:458.06:290.36:360.94:447:00Waning Gibbous7Mon
8Tue12:508.71:198.27:020.37:150.84:456:59Waning Gibbous8Tue
9Wed1:288.51:548.47:370.37:560.74:466:57Waning Gibbous9Wed
10Thu2:098.32:328.58:140.48:410.64:476:56Waning Gibbous10Thu
11Fri2:538.13:158.78:560.69:310.64:486:54Third Quarter11Fri
12Sat3:437.84:038.89:430.710:270.64:496:53Third Quarter12Sat
13Sun4:387.64:578.810:360.911:270.54:506:52Third Quarter13Sun
14Mon5:407.45:588.911:351.04:516:50Waning Crescent14Mon
15Tue6:477.47:049.112:320.412:391.04:526:49Waning Crescent15Tue
16Wed7:557.58:109.41:390.21:450.84:546:47Waning Crescent16Wed
17Thu8:587.99:129.72:42-0.22:480.54:556:46Waning Crescent17Thu
18Fri9:568.310:1010.03:40-0.53:480.14:566:44New Moon18Fri
19Sat10:508.711:0510.14:33-0.84:44-0.24:576:42New Moon19Sat
20Sun11:419.111:5710.05:23-1.05:38-0.54:586:41New Moon20Sun
21Mon12:299.36:11-0.96:30-0.54:596:39Waxing Crescent21Mon
22Tue12:489.71:169.36:57-0.67:21-0.45:006:38Waxing Crescent22Tue
23Wed1:389.22:039.27:44-0.28:13-0.15:016:36Waxing Crescent23Wed
24Thu2:298.72:518.98:310.39:060.25:026:34Waxing Crescent24Thu
25Fri3:228.13:408.69:200.810:020.65:036:33First Quarter25Fri
26Sat4:187.64:338.310:111.311:001.05:056:31First Quarter26Sat
27Sun5:167.15:298.011:061.75:066:29First Quarter27Sun
28Mon6:176.96:287.912:011.212:041.95:076:28First Quarter28Mon
29Tue7:186.87:288.01:031.31:042.05:086:26Waxing Gibbous29Tue
30Wed8:156.98:228.12:011.22:011.95:096:24Waxing Gibbous30Wed
31Thu9:047.29:108.32:511.02:511.65:106:23Waxing Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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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 transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

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 Crescent (30% illuminated). This places Seavey Island, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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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