Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 4h 30m at 7:27 am (-1.1 ft)
Next high tide : 1:48 pm (8.9 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:18 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Feb 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:318.63:597.99:470.210:040.36:584:54Third Quarter1Sat
2Sun4:268.75:027.610:480.211:030.56:564:56Third Quarter2Sun
3Mon5:268.76:107.411:550.26:554:57Third Quarter3Mon
4Tue6:328.77:237.312:070.71:050.16:544:59Waning Crescent4Tue
5Wed7:418.98:327.51:150.82:13-0.26:535:00Waning Crescent5Wed
6Thu8:469.29:347.82:210.63:15-0.56:525:01Waning Crescent6Thu
7Fri9:459.510:298.13:220.34:11-0.86:515:03New Moon7Fri
8Sat10:399.611:208.44:180.05:02-1.06:495:04New Moon8Sat
9Sun11:309.75:09-0.25:49-1.06:485:05New Moon9Sun
10Mon12:078.512:179.55:58-0.26:33-0.86:475:07New Moon10Mon
11Tue12:508.61:029.26:45-0.27:15-0.56:455:08Waxing Crescent11Tue
12Wed1:328.51:468.87:310.07:55-0.16:445:09Waxing Crescent12Wed
13Thu2:128.42:298.38:160.28:360.36:435:11Waxing Crescent13Thu
14Fri2:528.23:147.89:020.59:170.86:415:12Waxing Crescent14Fri
15Sat3:348.04:017.39:510.810:011.26:405:13First Quarter15Sat
16Sun4:197.84:526.910:421.010:481.66:395:14First Quarter16Sun
17Mon5:077.65:486.611:361.211:401.86:375:16First Quarter17Mon
18Tue6:017.56:486.512:351.36:365:17First Quarter18Tue
19Wed6:587.67:476.612:361.91:341.26:345:18Waxing Gibbous19Wed
20Thu7:557.88:416.81:331.82:280.96:335:20Waxing Gibbous20Thu
21Fri8:468.19:287.12:261.53:150.66:315:21Waxing Gibbous21Fri
22Sat9:338.510:107.43:141.23:570.26:305:22Waxing Gibbous22Sat
23Sun10:178.810:507.83:580.84:37-0.16:285:24Full Moon23Sun
24Mon10:599.011:298.24:410.45:15-0.36:265:25Full Moon24Mon
25Tue11:419.15:240.05:53-0.56:255:26Full Moon25Tue
26Wed12:088.612:249.16:08-0.36:33-0.66:235:27Waning Gibbous26Wed
27Thu12:488.91:089.06:53-0.57:14-0.56:225:29Waning Gibbous27Thu
28Fri1:309.11:568.77:41-0.57:59-0.36:205:30Waning Gibbous28Fri
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 10:37 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 7% 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 Crescent (7% 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