Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

46°
H 63°
L 46°
NNE
6mph
High tide
9:41 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 3:35 pm (1.3 ft)
Next high tide : in 4h 32m at 9:41 am (7.5 ft)
Sunset today : 6:38 pm
Sunrise tomorrow : 6:31 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Aug 1867

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:589.45:39-1.45:53-0.74:367:09New Moon1Thu
2Fri12:1310.312:509.46:29-1.36:47-0.64:377:07Waxing Crescent2Fri
3Sat1:0610.01:419.47:20-1.17:41-0.44:387:06Waxing Crescent3Sat
4Sun1:599.62:329.28:10-0.78:35-0.14:407:05Waxing Crescent4Sun
5Mon2:539.13:249.09:01-0.29:320.24:417:04First Quarter5Mon
6Tue3:488.54:178.79:540.310:300.64:427:02First Quarter6Tue
7Wed4:458.05:128.510:470.811:290.84:437:01First Quarter7Wed
8Thu5:447.76:078.311:421.14:447:00First Quarter8Thu
9Fri6:437.47:038.312:291.012:381.44:456:58Waxing Gibbous9Fri
10Sat7:417.37:578.31:281.01:341.44:466:57Waxing Gibbous10Sat
11Sun8:357.48:468.42:220.92:251.44:476:56Waxing Gibbous11Sun
12Mon9:227.59:318.63:100.73:121.34:486:54Waxing Gibbous12Mon
13Tue10:067.710:128.73:530.53:551.14:496:53Full Moon13Tue
14Wed10:457.910:518.84:310.44:350.94:506:51Full Moon14Wed
15Thu11:238.111:298.95:070.25:130.74:526:50Full Moon15Thu
16Fri11:598.25:420.15:510.64:536:48Full Moon16Fri
17Sat12:068.912:348.46:170.06:290.54:546:47Waning Gibbous17Sat
18Sun12:448.91:108.56:530.07:090.44:556:45Waning Gibbous18Sun
19Mon1:248.81:488.77:310.07:520.34:566:44Waning Gibbous19Mon
20Tue2:068.62:308.88:120.18:400.34:576:42Waning Gibbous20Tue
21Wed2:538.53:178.98:580.29:320.34:586:41Third Quarter21Wed
22Thu3:468.24:099.09:490.310:290.24:596:39Third Quarter22Thu
23Fri4:438.15:069.010:450.511:300.25:006:37Third Quarter23Fri
24Sat5:458.06:089.211:450.55:016:36Waning Crescent24Sat
25Sun6:528.07:139.312:350.112:490.45:036:34Waning Crescent25Sun
26Mon7:578.38:169.61:39-0.21:540.25:046:33Waning Crescent26Mon
27Tue8:588.69:169.92:40-0.52:54-0.15:056:31Waning Crescent27Tue
28Wed9:549.010:1210.13:37-0.83:52-0.45:066:29New Moon28Wed
29Thu10:479.311:0510.14:29-1.04:46-0.75:076:28New Moon29Thu
30Fri11:379.511:5710.05:19-1.15:38-0.85:086:26New Moon30Fri
31Sat12:269.56:07-1.06:28-0.75:096:24Waxing Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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Common Questions About Seavey Island, NH Tides

Collapse All
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 90% 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 (90% 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

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