Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

73°
H 76°
L 61°
SSW
9mph
High tide
3:45 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 10:08 pm (0.7 ft)
Next high tide : in 2h 42m at 3:45 pm (8.5 ft)
Sunset today : 6:51 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Nov 1876

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:169.310:498.54:010.44:35-0.46:224:38Full Moon1Wed
2Thu10:569.611:348.54:420.35:18-0.76:234:37Full Moon2Thu
3Fri11:399.85:240.36:04-0.86:254:36Waning Gibbous3Fri
4Sat12:208.412:259.86:100.36:52-0.86:264:34Waning Gibbous4Sat
5Sun1:108.21:159.76:580.47:44-0.66:274:33Waning Gibbous5Sun
6Mon2:038.02:109.57:510.68:41-0.36:284:32Waning Gibbous6Mon
7Tue3:027.93:119.28:500.99:42-0.16:304:31Third Quarter7Tue
8Wed4:067.84:178.99:561.010:450.16:314:30Third Quarter8Wed
9Thu5:117.95:268.611:051.011:490.36:324:29Third Quarter9Thu
10Fri6:158.16:358.512:150.96:344:27Waning Crescent10Fri
11Sat7:168.47:418.412:510.31:220.66:354:26Waning Crescent11Sat
12Sun8:128.88:408.51:480.32:220.26:364:25Waning Crescent12Sun
13Mon9:029.19:338.42:410.33:16-0.16:374:24Waning Crescent13Mon
14Tue9:479.310:228.43:280.44:05-0.36:394:23New Moon14Tue
15Wed10:309.311:078.24:130.54:51-0.46:404:23New Moon15Wed
16Thu11:119.211:508.04:550.75:34-0.36:414:22New Moon16Thu
17Fri11:509.15:350.96:15-0.26:424:21New Moon17Fri
18Sat12:327.812:298.96:151.16:550.16:444:20Waxing Crescent18Sat
19Sun1:137.61:098.66:551.37:370.46:454:19Waxing Crescent19Sun
20Mon1:547.41:518.47:371.58:200.66:464:18Waxing Crescent20Mon
21Tue2:397.22:378.18:221.79:050.96:474:18Waxing Crescent21Tue
22Wed3:267.13:267.99:111.99:521.06:494:17First Quarter22Wed
23Thu4:147.14:177.710:041.910:401.16:504:16First Quarter23Thu
24Fri5:047.25:117.510:591.911:281.26:514:16First Quarter24Fri
25Sat5:537.46:067.511:541.76:524:15First Quarter25Sat
26Sun6:417.87:017.512:171.112:501.36:534:15Waxing Gibbous26Sun
27Mon7:288.27:557.71:061.01:430.96:554:14Waxing Gibbous27Mon
28Tue8:138.68:457.81:530.92:330.46:564:14Waxing Gibbous28Tue
29Wed8:579.19:348.02:400.73:21-0.26:574:13Waxing Gibbous29Wed
30Thu9:429.510:238.23:260.54:09-0.66:584:13Full Moon30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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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 transitional phase. Tonight's moon is 30% 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 Waxing Crescent (30% 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

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