Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, June 26, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 3:45 pm (1.4 ft)
Next high tide : in 4h 37m at 9:56 am (7.4 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:05 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Oct 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:399.12:5510.08:35-0.39:17-0.96:406:25Waxing Crescent1Sat
2Sun3:378.73:539.79:310.110:18-0.56:416:23First Quarter2Sun
3Mon4:398.34:569.310:320.511:22-0.16:426:21First Quarter3Mon
4Tue5:448.06:018.911:370.86:436:19First Quarter4Tue
5Wed6:497.97:088.712:270.212:441.06:446:18First Quarter5Wed
6Thu7:537.98:128.51:310.41:501.06:456:16Waxing Gibbous6Thu
7Fri8:518.09:108.52:310.52:510.96:466:14Waxing Gibbous7Fri
8Sat9:428.210:008.53:240.53:440.76:486:12Waxing Gibbous8Sat
9Sun10:268.410:458.54:100.54:310.56:496:11Waxing Gibbous9Sun
10Mon11:058.611:258.44:500.55:130.36:506:09Full Moon10Mon
11Tue11:408.65:270.65:500.36:516:07Full Moon11Tue
12Wed12:038.312:138.76:010.76:260.26:526:06Full Moon12Wed
13Thu12:398.212:468.76:330.87:010.26:536:04Full Moon13Thu
14Fri1:148.11:198.77:061.07:360.36:556:02Waning Gibbous14Fri
15Sat1:517.91:548.67:401.18:130.46:566:01Waning Gibbous15Sat
16Sun2:297.72:328.58:171.28:530.56:575:59Waning Gibbous16Sun
17Mon3:107.53:138.48:571.49:360.76:585:57Waning Gibbous17Mon
18Tue3:557.44:008.39:431.510:250.86:595:56Third Quarter18Tue
19Wed4:447.34:528.310:341.511:170.87:015:54Third Quarter19Wed
20Thu5:387.45:508.211:321.47:025:53Third Quarter20Thu
21Fri6:347.66:508.312:130.712:331.27:035:51Third Quarter21Fri
22Sat7:318.07:528.51:100.61:360.87:045:49Waning Crescent22Sat
23Sun8:288.68:538.82:080.32:370.37:065:48Waning Crescent23Sun
24Mon9:229.29:519.13:040.03:36-0.47:075:46Waning Crescent24Mon
25Tue10:149.810:469.33:57-0.44:31-0.97:085:45New Moon25Tue
26Wed11:0410.211:409.44:48-0.65:24-1.47:095:43New Moon26Wed
27Thu11:5510.55:39-0.76:17-1.67:115:42New Moon27Thu
28Fri12:349.412:4710.56:30-0.77:10-1.67:125:41Waxing Crescent28Fri
29Sat1:289.21:4010.47:22-0.58:04-1.47:135:39Waxing Crescent29Sat
30Sun2:239.02:3510.08:15-0.28:59-1.07:145:38Waxing Crescent30Sun
31Mon3:218.63:339.69:120.29:58-0.57:165:36Waxing Crescent31Mon
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 12:50 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 90% 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 (90% 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