Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

55°
H -°
L 44°
NE
12mph
High tide
8:28 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 2:43 am (1.0 ft)
Next high tide : in 3h 59m at 8:28 pm (7.9 ft)
Sunset today : 5:50 pm
Sunrise tomorrow : 7:04 am
Moon phase : Waxing Gibbous (78% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Nov 1815

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:5010.011:229.34:32-0.55:04-1.16:204:40New Moon1Wed
2Thu11:3610.05:19-0.45:53-1.16:224:39New Moon2Thu
3Fri12:119.112:219.86:05-0.16:41-0.96:234:37Waxing Crescent3Fri
4Sat12:598.71:069.56:500.37:28-0.56:244:36Waxing Crescent4Sat
5Sun1:488.31:539.17:370.78:18-0.16:264:35Waxing Crescent5Sun
6Mon2:387.92:428.78:261.29:100.46:274:33Waxing Crescent6Mon
7Tue3:317.63:358.29:191.510:040.76:284:32First Quarter7Tue
8Wed4:267.34:317.910:161.810:591.06:304:31First Quarter8Wed
9Thu5:227.35:297.711:141.911:541.16:314:30First Quarter9Thu
10Fri6:177.36:277.612:141.86:324:29First Quarter10Fri
11Sat7:107.57:237.712:481.21:111.66:334:28Waxing Gibbous11Sat
12Sun7:587.88:147.81:371.12:021.36:354:27Waxing Gibbous12Sun
13Mon8:408.19:008.02:221.02:490.96:364:26Waxing Gibbous13Mon
14Tue9:208.59:438.13:020.83:310.56:374:25Waxing Gibbous14Tue
15Wed9:568.810:248.23:400.74:110.26:394:24Full Moon15Wed
16Thu10:339.011:058.24:180.64:50-0.16:404:23Full Moon16Thu
17Fri11:109.211:468.24:550.55:30-0.46:414:22Full Moon17Fri
18Sat11:499.45:350.56:12-0.56:424:21Full Moon18Sat
19Sun12:298.212:329.56:170.56:56-0.56:444:20Waning Gibbous19Sun
20Mon1:148.11:189.47:030.67:44-0.56:454:19Waning Gibbous20Mon
21Tue2:048.02:099.37:530.78:37-0.36:464:19Waning Gibbous21Tue
22Wed2:588.03:069.18:490.89:34-0.26:474:18Third Quarter22Wed
23Thu3:578.04:088.99:500.910:340.06:494:17Third Quarter23Thu
24Fri4:598.15:148.710:560.811:360.06:504:17Third Quarter24Fri
25Sat6:028.36:228.612:040.76:514:16Waning Crescent25Sat
26Sun7:048.77:298.612:370.01:110.36:524:15Waning Crescent26Sun
27Mon8:029.18:308.71:370.02:13-0.16:534:15Waning Crescent27Mon
28Tue8:559.49:268.72:32-0.13:10-0.56:544:14Waning Crescent28Tue
29Wed9:449.710:188.73:23-0.14:02-0.86:564:14New Moon29Wed
30Thu10:319.811:088.64:120.04:51-0.96:574:14New 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 78% 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 Gibbous (78% 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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