Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, August 7, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 1:20 am (0.4 ft)
Next high tide : in 3h 22m at 6:46 pm (9.0 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 5:40 am
Moon phase : Third Quarter (32% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Aug 2093

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:157.86:408.812:040.712:180.75:348:03First Quarter1Sat
2Sun7:167.87:399.11:040.51:170.75:358:02Waxing Gibbous2Sun
3Mon8:217.88:419.42:080.22:190.65:378:01Waxing Gibbous3Mon
4Tue9:258.19:429.83:11-0.23:210.35:388:00Waxing Gibbous4Tue
5Wed10:268.410:4010.14:10-0.74:200.05:397:58Full Moon5Wed
6Thu11:248.811:3710.35:07-1.15:18-0.35:407:57Full Moon6Thu
7Fri12:209.16:01-1.36:14-0.55:417:56Full Moon7Fri
8Sat12:3410.41:149.36:54-1.47:09-0.65:427:54Waning Gibbous8Sat
9Sun1:2810.32:069.47:45-1.38:04-0.65:437:53Waning Gibbous9Sun
10Mon2:2310.02:589.48:36-1.08:59-0.45:447:51Waning Gibbous10Mon
11Tue3:179.63:509.29:28-0.69:55-0.15:457:50Waning Gibbous11Tue
12Wed4:129.04:439.010:20-0.110:530.25:467:49Third Quarter12Wed
13Thu5:098.55:378.811:130.411:520.45:477:47Third Quarter13Thu
14Fri6:068.06:318.612:070.85:487:46Third Quarter14Fri
15Sat7:057.67:268.412:520.71:031.25:497:44Third Quarter15Sat
16Sun8:037.48:208.31:510.81:581.45:517:43Waning Crescent16Sun
17Mon8:597.49:128.42:470.82:521.45:527:41Waning Crescent17Mon
18Tue9:507.49:598.53:390.73:411.45:537:40Waning Crescent18Tue
19Wed10:357.510:428.64:240.64:261.35:547:38Waning Crescent19Wed
20Thu11:177.711:228.75:050.45:071.15:557:36New Moon20Thu
21Fri11:557.95:420.35:450.95:567:35New Moon21Fri
22Sat12:008.812:318.06:170.26:230.85:577:33New Moon22Sat
23Sun12:378.81:068.26:510.27:000.75:587:32New Moon23Sun
24Mon1:148.81:418.37:250.27:380.65:597:30Waxing Crescent24Mon
25Tue1:528.72:178.48:010.28:180.56:007:28Waxing Crescent25Tue
26Wed2:328.62:558.58:380.39:010.46:017:27Waxing Crescent26Wed
27Thu3:158.43:378.79:200.49:490.46:037:25Waxing Crescent27Thu
28Fri4:038.24:248.710:060.510:420.46:047:23First Quarter28Fri
29Sat4:567.95:178.810:570.711:400.46:057:22First Quarter29Sat
30Sun5:547.86:168.911:550.86:067:20First Quarter30Sun
31Mon6:597.77:199.012:430.312:570.86:077:18Waxing Gibbous31Mon
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 10:03 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 transitional phase. Tonight's moon is 32% 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 shifting between spring and neap.

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 Third Quarter (32% illuminated). This places Seavey Island, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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