Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 4h 07m at 9:00 am (0.3 ft)
Next high tide : 3:19 pm (8.5 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 5:35 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Oct 2084

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:338.512:449.16:300.47:00-0.26:416:22New Moon1Sun
2Mon1:158.41:249.27:100.47:43-0.26:426:21Waxing Crescent2Mon
3Tue1:598.22:089.37:520.58:30-0.26:436:19Waxing Crescent3Tue
4Wed2:468.02:569.28:390.69:220.06:456:17Waxing Crescent4Wed
5Thu3:397.83:519.09:320.810:200.16:466:15First Quarter5Thu
6Fri4:397.74:538.910:321.011:230.36:476:14First Quarter6Fri
7Sat5:447.76:008.811:381.16:486:12First Quarter7Sat
8Sun6:527.87:108.812:290.312:481.06:496:10Waxing Gibbous8Sun
9Mon7:598.18:198.91:350.21:570.76:506:08Waxing Gibbous9Mon
10Tue9:008.69:229.12:370.03:020.26:516:07Waxing Gibbous10Tue
11Wed9:559.110:199.23:34-0.24:01-0.36:536:05Waxing Gibbous11Wed
12Thu10:459.511:119.34:25-0.44:54-0.66:546:03Full Moon12Thu
13Fri11:319.75:13-0.45:43-0.96:556:02Full Moon13Fri
14Sat12:009.212:159.75:58-0.36:30-0.96:566:00Full Moon14Sat
15Sun12:479.012:589.66:420.07:15-0.76:575:58Full Moon15Sun
16Mon1:328.71:409.47:240.38:00-0.46:595:57Waning Gibbous16Mon
17Tue2:158.32:219.18:060.78:440.07:005:55Waning Gibbous17Tue
18Wed3:007.93:048.78:491.19:300.47:015:54Waning Gibbous18Wed
19Thu3:457.63:508.49:341.410:180.87:025:52Third Quarter19Thu
20Fri4:347.34:398.110:231.711:081.17:035:51Third Quarter20Fri
21Sat5:257.15:327.911:161.97:055:49Third Quarter21Sat
22Sun6:177.16:267.712:001.212:111.97:065:47Third Quarter22Sun
23Mon7:107.27:227.712:511.31:081.87:075:46Third Quarter23Mon
24Tue8:017.48:177.71:421.32:031.67:085:44Waning Crescent24Tue
25Wed8:487.89:097.92:311.22:551.27:105:43Waning Crescent25Wed
26Thu9:328.29:568.03:151.03:430.87:115:42Waning Crescent26Thu
27Fri10:128.610:418.23:570.84:270.37:125:40New Moon27Fri
28Sat10:529.011:248.34:370.75:10-0.17:135:39New Moon28Sat
29Sun11:329.35:180.55:54-0.47:155:37New Moon29Sun
30Mon12:088.312:159.56:000.46:39-0.67:165:36New Moon30Mon
31Tue12:548.31:009.66:450.37:25-0.67:175:35Waxing Crescent31Tue
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 12:09 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 75% 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 Waning Gibbous (75% 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