Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide (tomorrow) : in 2h 58m at 12:57 am (0.7 ft)
Next high tide (tomorrow) : 7:10 am (7.9 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:03 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Aug 2035

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:438.410:0110.03:28-0.53:390.05:338:04Waning Crescent1Wed
2Thu10:438.710:5910.24:27-0.94:38-0.35:348:03New Moon2Thu
3Fri11:409.011:5510.45:23-1.25:35-0.55:358:02New Moon3Fri
4Sat12:359.36:16-1.46:30-0.65:368:01New Moon4Sat
5Sun12:5010.31:279.47:07-1.47:24-0.65:377:59Waxing Crescent5Sun
6Mon1:4310.12:189.47:58-1.28:17-0.55:397:58Waxing Crescent6Mon
7Tue2:359.83:099.38:47-0.89:10-0.25:407:57Waxing Crescent7Tue
8Wed3:289.33:599.19:37-0.410:050.15:417:55Waxing Crescent8Wed
9Thu4:218.84:508.810:280.111:010.45:427:54First Quarter9Thu
10Fri5:158.35:418.611:190.611:570.75:437:53First Quarter10Fri
11Sat6:107.86:338.412:111.05:447:51First Quarter11Sat
12Sun7:067.57:268.312:540.91:041.35:457:50First Quarter12Sun
13Mon8:027.38:198.21:511.01:581.45:467:48Waxing Gibbous13Mon
14Tue8:577.39:108.32:461.02:511.45:477:47Waxing Gibbous14Tue
15Wed9:477.49:568.53:360.83:391.45:487:46Waxing Gibbous15Wed
16Thu10:327.610:398.64:210.64:231.25:497:44Waxing Gibbous16Thu
17Fri11:147.811:208.85:010.45:041.05:507:43Full Moon17Fri
18Sat11:538.011:598.95:390.35:440.85:527:41Full Moon18Sat
19Sun12:308.26:140.16:220.65:537:39Full Moon19Sun
20Mon12:378.91:068.36:500.07:010.55:547:38Full Moon20Mon
21Tue1:168.91:438.57:260.07:420.35:557:36Waning Gibbous21Tue
22Wed1:568.92:218.78:040.08:250.25:567:35Waning Gibbous22Wed
23Thu2:388.73:038.88:450.09:110.25:577:33Waning Gibbous23Thu
24Fri3:248.53:498.99:300.110:020.25:587:31Third Quarter24Fri
25Sat4:158.34:409.010:190.310:580.25:597:30Third Quarter25Sat
26Sun5:128.15:369.011:150.411:590.26:007:28Third Quarter26Sun
27Mon6:148.06:389.112:150.56:017:26Third Quarter27Mon
28Tue7:208.07:439.21:040.11:190.56:037:25Waning Crescent28Tue
29Wed8:288.18:499.42:11-0.12:260.46:047:23Waning Crescent29Wed
30Thu9:338.59:519.73:15-0.43:290.16:057:21Waning Crescent30Thu
31Fri10:318.810:4910.04:13-0.74:28-0.36:067:20New Moon31Fri
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 4:03 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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Seavey Island, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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