Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

64°
H 72°
L 47°
NW
11mph
High tide
2:21 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, September 14, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 8:35 pm (-0.1 ft)
Next high tide : in 4h 39m at 2:21 pm (9.1 ft)
Sunset today : 6:55 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Feb 1882

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:098.710:437.73:490.84:290.07:024:59Full Moon1Wed
2Thu10:508.711:227.94:320.65:070.07:005:00Full Moon2Thu
3Fri11:288.711:578.05:120.55:420.06:595:02Full Moon3Fri
4Sat12:048.65:490.56:150.06:585:03Full Moon4Sat
5Sun12:308.012:398.56:250.56:480.16:575:04Waning Gibbous5Sun
6Mon1:038.11:148.37:020.57:210.26:565:06Waning Gibbous6Mon
7Tue1:378.11:528.07:390.57:560.46:555:07Waning Gibbous7Tue
8Wed2:138.12:317.88:190.68:330.66:535:08Waning Gibbous8Wed
9Thu2:528.13:157.59:030.79:150.76:525:10Third Quarter9Thu
10Fri3:358.14:047.39:520.810:030.96:515:11Third Quarter10Fri
11Sat4:238.14:587.110:450.810:551.06:495:12Third Quarter11Sat
12Sun5:188.25:597.011:440.711:541.06:485:14Third Quarter12Sun
13Mon6:188.47:037.212:470.56:475:15Waning Crescent13Mon
14Tue7:208.78:057.612:570.81:490.16:455:16Waning Crescent14Tue
15Wed8:219.29:038.11:590.42:47-0.56:445:18Waning Crescent15Wed
16Thu9:199.69:578.72:58-0.13:41-1.06:425:19New Moon16Thu
17Fri10:1310.010:489.23:54-0.74:31-1.46:415:20New Moon17Fri
18Sat11:0710.211:389.64:48-1.15:21-1.66:395:22New Moon18Sat
19Sun11:5910.25:41-1.46:10-1.76:385:23Waxing Crescent19Sun
20Mon12:289.912:5110.06:33-1.56:58-1.56:365:24Waxing Crescent20Mon
21Tue1:179.91:449.67:26-1.47:48-1.16:355:25Waxing Crescent21Tue
22Wed2:089.72:399.08:21-1.08:40-0.66:335:27Waxing Crescent22Wed
23Thu3:029.43:378.49:19-0.69:360.06:325:28First Quarter23Thu
24Fri3:599.04:387.910:20-0.110:340.66:305:29First Quarter24Fri
25Sat4:598.65:437.511:240.311:371.06:295:31First Quarter25Sat
26Sun6:038.36:497.212:300.56:275:32First Quarter26Sun
27Mon7:088.17:527.212:411.21:340.66:255:33Waxing Gibbous27Mon
28Tue8:088.28:477.41:441.22:310.66:245:34Waxing Gibbous28Tue
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.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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 spring phase. Tonight's moon is 14% 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 (14% 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

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