Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 18m at 8:16 am (0.3 ft)
Next high tide : 2:35 pm (7.7 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:08 am
Moon phase : Waning Gibbous (88% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Dec 2045

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:278.24:448.510:270.711:010.06:554:09Third Quarter1Fri
2Sat5:288.55:508.411:340.66:564:08Third Quarter2Sat
3Sun6:288.86:578.312:010.112:410.36:574:08Waning Crescent3Sun
4Mon7:279.18:018.31:010.21:44-0.16:584:08Waning Crescent4Mon
5Tue8:229.48:598.31:590.22:43-0.46:594:08Waning Crescent5Tue
6Wed9:149.69:538.32:530.23:37-0.77:004:08New Moon6Wed
7Thu10:039.710:448.33:430.34:27-0.87:014:07New Moon7Thu
8Fri10:499.611:318.24:310.35:14-0.87:024:07New Moon8Fri
9Sat11:349.55:160.55:59-0.67:024:07New Moon9Sat
10Sun12:158.012:169.36:000.66:42-0.47:034:07Waxing Crescent10Sun
11Mon12:587.812:589.06:430.97:23-0.17:044:08Waxing Crescent11Mon
12Tue1:397.71:398.77:251.18:040.27:054:08Waxing Crescent12Tue
13Wed2:217.52:228.38:091.38:450.57:064:08Waxing Crescent13Wed
14Thu3:037.43:078.08:551.49:270.87:074:08First Quarter14Thu
15Fri3:477.43:547.79:441.610:111.07:074:08First Quarter15Fri
16Sat4:327.44:457.410:351.610:561.27:084:09First Quarter16Sat
17Sun5:187.55:387.211:291.511:431.47:094:09First Quarter17Sun
18Mon6:067.76:357.012:241.47:094:09Waxing Gibbous18Mon
19Tue6:567.97:317.012:321.51:201.17:104:10Waxing Gibbous19Tue
20Wed7:458.28:267.11:231.52:140.87:104:10Waxing Gibbous20Wed
21Thu8:348.59:177.22:131.33:040.47:114:11Waxing Gibbous21Thu
22Fri9:218.910:057.53:021.13:520.07:114:11Full Moon22Fri
23Sat10:099.210:537.73:500.84:39-0.47:124:12Full Moon23Sat
24Sun10:579.511:427.94:380.65:26-0.67:124:12Full Moon24Sun
25Mon11:479.65:280.36:13-0.87:124:13Full Moon25Mon
26Tue12:318.112:389.66:190.27:02-0.97:134:14Waning Gibbous26Tue
27Wed1:218.31:319.57:120.17:52-0.87:134:14Waning Gibbous27Wed
28Thu2:148.52:279.28:090.18:45-0.77:134:15Waning Gibbous28Thu
29Fri3:088.73:268.99:090.19:40-0.47:134:16Third Quarter29Fri
30Sat4:058.84:288.510:120.210:37-0.17:144:17Third Quarter30Sat
31Sun5:048.85:338.111:170.211:320.27:144:17Third Quarter31Sun
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 11:25 am — 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 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 Waning 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