Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

61°
H -°
L 47°
NW
8mph
Low tide
8:35 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, September 14, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 49m at 8:35 pm (-0.1 ft)
Next high tide (tomorrow) : 2:50 am (8.4 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 1881

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:369.412:549.96:35-1.17:05-1.47:014:59Waxing Crescent1Tue
2Wed1:259.51:469.57:28-0.97:54-1.07:005:01Waxing Crescent2Wed
3Thu2:149.32:388.98:21-0.68:43-0.46:595:02Waxing Crescent3Thu
4Fri3:059.03:338.39:17-0.29:350.16:585:03First Quarter4Fri
5Sat3:588.74:317.710:160.210:300.76:575:05First Quarter5Sat
6Sun4:548.45:327.311:170.611:261.16:565:06First Quarter6Sun
7Mon5:528.16:357.012:200.86:545:07First Quarter7Mon
8Tue6:538.07:376.912:261.41:220.96:535:09Waxing Gibbous8Tue
9Wed7:518.08:337.01:261.52:200.86:525:10Waxing Gibbous9Wed
10Thu8:438.19:217.22:211.43:090.66:505:11Waxing Gibbous10Thu
11Fri9:308.310:047.43:101.23:520.46:495:13Waxing Gibbous11Fri
12Sat10:118.410:437.63:540.94:300.26:485:14Full Moon12Sat
13Sun10:508.511:197.94:330.75:050.16:465:15Full Moon13Sun
14Mon11:268.611:528.15:110.55:370.06:455:17Full Moon14Mon
15Tue12:028.65:470.36:090.06:445:18Full Moon15Tue
16Wed12:258.212:388.56:230.26:430.06:425:19Waning Gibbous16Wed
17Thu12:588.41:158.47:010.17:180.06:415:21Waning Gibbous17Thu
18Fri1:348.51:558.27:410.17:560.16:395:22Waning Gibbous18Fri
19Sat2:138.62:397.98:260.18:390.36:385:23Waning Gibbous19Sat
20Sun2:578.63:297.79:160.29:280.56:365:24Third Quarter20Sun
21Mon3:478.64:257.410:120.210:230.76:355:26Third Quarter21Mon
22Tue4:458.65:287.311:130.311:250.76:335:27Third Quarter22Tue
23Wed5:488.76:377.412:200.26:315:28Waning Crescent23Wed
24Thu6:578.97:457.712:320.71:27-0.16:305:30Waning Crescent24Thu
25Fri8:049.28:478.21:390.42:29-0.56:285:31Waning Crescent25Fri
26Sat9:059.59:438.72:43-0.13:26-0.96:275:32Waning Crescent26Sat
27Sun10:029.810:359.23:41-0.64:18-1.26:255:33New Moon27Sun
28Mon10:559.911:259.54:36-1.05:07-1.36:235:35New Moon28Mon
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 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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