Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 7:03 pm (1.4 ft)
Next high tide : in 3h 24m at 1:22 pm (7.5 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:07 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Mar 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:1010.05:52-1.36:20-1.46:185:31Waxing Crescent1Wed
2Thu12:379.71:029.86:44-1.47:07-1.26:165:33Waxing Crescent2Thu
3Fri1:269.81:549.37:37-1.27:56-0.76:155:34Waxing Crescent3Fri
4Sat2:169.62:498.78:31-0.98:48-0.16:135:35Waxing Crescent4Sat
5Sun3:089.23:468.19:29-0.49:420.56:115:36First Quarter5Sun
6Mon4:058.84:487.510:300.010:411.06:105:38First Quarter6Mon
7Tue5:058.45:537.111:350.511:441.46:085:39First Quarter7Tue
8Wed6:108.17:006.912:420.76:065:40First Quarter8Wed
9Thu7:167.98:037.012:501.61:460.86:055:41Waxing Gibbous9Thu
10Fri8:168.08:567.11:531.52:420.76:035:42Waxing Gibbous10Fri
11Sat9:078.19:417.42:481.33:290.66:015:44Waxing Gibbous11Sat
12Sun9:518.210:207.63:341.14:090.55:595:45Waxing Gibbous12Sun
13Mon10:308.310:557.94:150.84:440.45:585:46Full Moon13Mon
14Tue11:068.311:278.04:530.65:150.45:565:47Full Moon14Tue
15Wed11:418.311:588.25:280.45:460.45:545:48Full Moon15Wed
16Thu12:168.26:020.36:160.55:525:50Full Moon16Thu
17Fri12:288.312:518.16:360.26:470.65:515:51Waning Gibbous17Fri
18Sat1:008.41:277.87:120.27:210.85:495:52Waning Gibbous18Sat
19Sun1:348.42:077.67:510.37:591.05:475:53Waning Gibbous19Sun
20Mon2:138.42:507.38:350.48:421.25:455:54Waning Gibbous20Mon
21Tue2:588.33:417.19:250.59:321.35:445:56Third Quarter21Tue
22Wed3:508.24:396.910:220.710:301.45:425:57Third Quarter22Wed
23Thu4:518.25:446.911:250.711:361.45:405:58Third Quarter23Thu
24Fri5:588.36:527.212:310.55:385:59Waning Crescent24Fri
25Sat7:078.67:577.712:451.11:370.25:366:00Waning Crescent25Sat
26Sun8:139.08:548.41:530.62:36-0.35:356:01Waning Crescent26Sun
27Mon9:139.49:479.02:54-0.13:29-0.75:336:03Waning Crescent27Mon
28Tue10:089.710:369.63:51-0.74:19-1.05:316:04New Moon28Tue
29Wed11:019.811:249.94:44-1.25:08-1.15:296:05New Moon29Wed
30Thu11:539.75:36-1.55:55-1.05:286:06New Moon30Thu
31Fri12:1210.112:449.46:26-1.56:42-0.75:266:07Waxing Crescent31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

Common Questions About Seavey Island, NH Tides

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What time does the tide turn (slack tide) in Seavey Island, NH today?

Slack tide in Seavey Island, NH is approximately 4:12 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 97% 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 Full Moon (97% 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