Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Saturday, June 27, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 4:28 pm (1.5 ft)
Next high tide : in 2h 34m at 10:43 am (7.4 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:05 am
Moon phase : Waxing Gibbous (95% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Aug 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:107.77:328.612:570.61:081.05:348:03Third Quarter1Wed
2Thu8:117.48:278.51:580.72:041.35:358:02Waning Crescent2Thu
3Fri9:087.39:198.52:550.72:581.55:368:01Waning Crescent3Fri
4Sat9:597.310:068.63:480.63:471.55:378:00Waning Crescent4Sat
5Sun10:467.410:508.64:350.54:321.45:387:58Waning Crescent5Sun
6Mon11:287.511:308.75:160.45:141.35:397:57New Moon6Mon
7Tue12:077.65:540.45:521.25:407:56New Moon7Tue
8Wed12:078.812:437.76:300.36:301.15:427:54New Moon8Wed
9Thu12:448.81:187.87:040.37:061.05:437:53New Moon9Thu
10Fri1:218.71:538.07:370.37:440.95:447:52Waxing Crescent10Fri
11Sat1:588.62:278.18:110.38:230.85:457:50Waxing Crescent11Sat
12Sun2:378.53:038.28:460.49:050.85:467:49Waxing Crescent12Sun
13Mon3:188.33:438.49:250.59:510.75:477:47Waxing Crescent13Mon
14Tue4:038.04:268.510:080.610:420.75:487:46First Quarter14Tue
15Wed4:547.85:158.610:550.811:380.65:497:44First Quarter15Wed
16Thu5:507.66:108.711:490.95:507:43First Quarter16Thu
17Fri6:527.47:118.912:390.612:481.05:517:41Waxing Gibbous17Fri
18Sat7:597.58:169.11:440.41:530.95:527:40Waxing Gibbous18Sat
19Sun9:067.79:219.52:500.12:580.75:547:38Waxing Gibbous19Sun
20Mon10:098.110:229.83:52-0.44:010.35:557:37Waxing Gibbous20Mon
21Tue11:078.511:2010.14:50-0.85:00-0.15:567:35Full Moon21Tue
22Wed12:028.95:44-1.15:56-0.45:577:33Full Moon22Wed
23Thu12:1610.212:549.26:35-1.26:50-0.65:587:32Full Moon23Thu
24Fri1:1010.11:449.47:25-1.17:44-0.65:597:30Waning Gibbous24Fri
25Sat2:039.92:339.48:13-0.98:37-0.56:007:28Waning Gibbous25Sat
26Sun2:559.43:239.39:02-0.49:31-0.26:017:27Waning Gibbous26Sun
27Mon3:488.94:139.09:520.110:270.16:027:25Third Quarter27Mon
28Tue4:438.35:048.810:430.611:240.46:037:23Third Quarter28Tue
29Wed5:397.85:578.511:361.16:047:22Third Quarter29Wed
30Thu6:367.46:528.212:220.712:301.56:067:20Third Quarter30Thu
31Fri7:357.27:498.11:220.91:271.76:077:18Waning 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 1:35 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 95% 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 (95% 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