Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, August 2, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 35m at 8:40 pm (0.6 ft)
Next high tide (tomorrow) : 2:52 am (8.5 ft)
Sunset today : 8:03 pm
Sunrise tomorrow : 5:34 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jan 2084

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:308.24:577.510:470.711:020.77:144:18Third Quarter1Sat
2Sun5:258.46:007.411:480.57:144:19Third Quarter2Sun
3Mon6:248.77:067.412:000.712:530.37:144:20Waning Crescent3Mon
4Tue7:269.08:127.61:020.71:58-0.17:144:21Waning Crescent4Tue
5Wed8:289.59:158.02:050.42:59-0.67:144:22Waning Crescent5Wed
6Thu9:279.810:138.33:060.13:57-1.17:144:23New Moon6Thu
7Fri10:2410.111:098.64:03-0.24:51-1.47:134:24New Moon7Fri
8Sat11:2010.34:59-0.55:44-1.67:134:25New Moon8Sat
9Sun12:038.912:1410.25:54-0.66:35-1.57:134:26Waxing Crescent9Sun
10Mon12:559.01:0710.06:48-0.67:25-1.37:134:27Waxing Crescent10Mon
11Tue1:469.02:009.57:42-0.58:15-0.97:124:28Waxing Crescent11Tue
12Wed2:378.92:549.08:38-0.29:05-0.47:124:29Waxing Crescent12Wed
13Thu3:288.83:508.49:350.19:570.17:124:30First Quarter13Thu
14Fri4:208.64:467.810:330.410:490.67:114:32First Quarter14Fri
15Sat5:138.35:447.411:330.611:431.07:114:33First Quarter15Sat
16Sun6:078.26:447.012:330.87:104:34First Quarter16Sun
17Mon7:038.17:426.912:381.31:320.87:104:35Waxing Gibbous17Mon
18Tue7:568.18:366.91:331.42:260.77:094:36Waxing Gibbous18Tue
19Wed8:458.29:247.02:251.43:140.67:084:38Waxing Gibbous19Wed
20Thu9:298.310:077.23:111.33:570.47:084:39Waxing Gibbous20Thu
21Fri10:108.510:467.43:531.14:350.27:074:40Full Moon21Fri
22Sat10:488.611:237.64:321.05:100.17:064:41Full Moon22Sat
23Sun11:258.711:587.75:090.85:440.07:064:43Full Moon23Sun
24Mon12:028.75:470.66:17-0.17:054:44Full Moon24Mon
25Tue12:327.912:398.66:240.56:51-0.17:044:45Waning Gibbous25Tue
26Wed1:078.11:178.57:040.47:270.07:034:47Waning Gibbous26Wed
27Thu1:448.21:598.37:460.38:060.17:024:48Waning Gibbous27Thu
28Fri2:238.42:448.08:320.38:500.27:014:49Waning Gibbous28Fri
29Sat3:088.53:357.79:240.39:390.47:004:51Third Quarter29Sat
30Sun3:598.54:337.410:210.410:340.66:594:52Third Quarter30Sun
31Mon4:568.65:387.211:250.411:360.86:584:53Third Quarter31Mon
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 11:46 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 84% 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 Waning Gibbous (84% 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