Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, July 26, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 20m at 4:01 am (0.8 ft)
Next high tide : 10:11 am (7.1 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:27 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Feb 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:288.97:087.912:010.212:490.06:564:56Waning Crescent1Wed
2Thu7:328.98:137.91:050.41:55-0.16:554:57Waning Crescent2Thu
3Fri8:329.09:117.92:070.42:54-0.36:544:58Waning Crescent3Fri
4Sat9:259.110:028.03:030.43:46-0.46:535:00Waning Crescent4Sat
5Sun10:139.110:488.13:530.34:32-0.56:525:01New Moon5Sun
6Mon10:579.111:298.14:380.25:14-0.56:515:02New Moon6Mon
7Tue11:369.05:200.25:52-0.46:495:04New Moon7Tue
8Wed12:068.112:138.85:590.36:27-0.26:485:05New Moon8Wed
9Thu12:428.112:498.76:360.37:010.06:475:06Waxing Crescent9Thu
10Fri1:168.11:258.47:130.47:360.26:455:08Waxing Crescent10Fri
11Sat1:508.02:038.27:510.68:110.46:445:09Waxing Crescent11Sat
12Sun2:278.02:447.98:310.78:490.66:435:10Waxing Crescent12Sun
13Mon3:067.93:287.69:150.89:310.96:415:12First Quarter13Mon
14Tue3:507.84:177.310:030.910:171.16:405:13First Quarter14Tue
15Wed4:377.85:107.110:561.011:081.26:395:14First Quarter15Wed
16Thu5:307.96:097.011:540.96:375:16First Quarter16Thu
17Fri6:278.07:107.112:041.212:540.76:365:17Waxing Gibbous17Fri
18Sat7:268.38:097.41:041.11:540.46:345:18Waxing Gibbous18Sat
19Sun8:248.89:047.82:030.72:49-0.16:335:19Waxing Gibbous19Sun
20Mon9:189.29:568.42:590.23:41-0.66:315:21Full Moon20Mon
21Tue10:119.710:468.93:52-0.34:30-1.16:305:22Full Moon21Tue
22Wed11:0210.011:359.34:44-0.85:18-1.46:285:23Full Moon22Wed
23Thu11:5410.15:35-1.16:07-1.66:265:25Full Moon23Thu
24Fri12:249.612:4510.06:27-1.36:56-1.56:255:26Waning Gibbous24Fri
25Sat1:149.71:399.77:20-1.37:46-1.26:235:27Waning Gibbous25Sat
26Sun2:069.72:349.38:16-1.18:40-0.86:225:28Waning Gibbous26Sun
27Mon3:019.53:348.89:15-0.89:36-0.36:205:30Third Quarter27Mon
28Tue3:599.24:378.310:17-0.410:370.16:185:31Third Quarter28Tue
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 7:06 am — 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 92% 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 (92% 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