Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, July 26, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 11m at 3:57 pm (1.7 ft)
Next high tide : 10:14 pm (8.5 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:27 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Apr 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:008.33:327.79:160.49:261.16:237:09Waxing Crescent1Sun
2Mon3:398.24:167.59:590.610:081.36:217:10Waxing Crescent2Mon
3Tue4:238.05:047.210:450.810:561.56:207:11First Quarter3Tue
4Wed5:127.95:577.111:370.911:491.66:187:13First Quarter4Wed
5Thu6:077.96:537.112:330.96:167:14First Quarter5Thu
6Fri7:058.07:527.312:471.61:310.86:147:15First Quarter6Fri
7Sat8:068.28:487.71:471.32:290.66:137:16Waxing Gibbous7Sat
8Sun9:058.59:408.32:470.83:230.26:117:17Waxing Gibbous8Sun
9Mon10:008.910:298.93:430.34:13-0.26:097:18Waxing Gibbous9Mon
10Tue10:529.311:169.44:36-0.45:01-0.66:087:20Full Moon10Tue
11Wed11:439.55:27-0.95:49-0.96:067:21Full Moon11Wed
12Thu12:049.912:349.66:17-1.36:37-1.06:047:22Full Moon12Thu
13Fri12:5310.11:269.67:08-1.57:26-0.96:037:23Waning Gibbous13Fri
14Sat1:4310.22:209.48:00-1.58:17-0.66:017:24Waning Gibbous14Sat
15Sun2:3510.13:169.08:55-1.39:12-0.25:597:25Waning Gibbous15Sun
16Mon3:319.84:168.69:53-0.910:110.25:587:27Third Quarter16Mon
17Tue4:319.45:208.310:56-0.511:140.65:567:28Third Quarter17Tue
18Wed5:369.06:268.112:01-0.15:547:29Third Quarter18Wed
19Thu6:438.77:328.012:210.81:060.15:537:30Third Quarter19Thu
20Fri7:508.58:358.11:290.92:100.25:517:31Waning Crescent20Fri
21Sat8:548.59:308.32:340.83:090.35:507:32Waning Crescent21Sat
22Sun9:498.510:198.53:320.64:000.35:487:34Waning Crescent22Sun
23Mon10:388.511:018.74:230.44:440.35:477:35Waning Crescent23Mon
24Tue11:218.511:388.85:070.25:230.45:457:36New Moon24Tue
25Wed12:018.45:470.15:590.55:447:37New Moon25Wed
26Thu12:138.812:388.36:250.06:330.65:427:38New Moon26Thu
27Fri12:468.81:138.27:000.07:060.85:417:39New Moon27Fri
28Sat1:188.71:498.17:350.17:400.95:397:40Waxing Crescent28Sat
29Sun1:528.72:267.98:100.28:151.15:387:42Waxing Crescent29Sun
30Mon2:278.63:067.78:480.38:531.35:367:43Waxing Crescent30Mon
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 7:05 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 92% 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 (92% 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