Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

62°
H -°
L 53°
SSE
8mph
Low tide
9:20 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 4h 41m at 9:20 pm (0.3 ft)
Next high tide (tomorrow) : 3:35 am (7.9 ft)
Sunset today : 6:53 pm
Sunrise tomorrow : 6:22 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Jan 1879

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:257.75:536.911:431.311:511.57:184:22First Quarter1Wed
2Thu6:167.76:516.812:411.37:184:23Waxing Gibbous2Thu
3Fri7:087.87:486.812:431.61:371.17:184:24Waxing Gibbous3Fri
4Sat7:598.08:416.91:351.62:290.97:184:25Waxing Gibbous4Sat
5Sun8:468.39:297.12:251.53:160.67:184:26Waxing Gibbous5Sun
6Mon9:318.610:137.33:111.33:590.27:184:27Full Moon6Mon
7Tue10:138.910:557.53:541.14:40-0.17:184:28Full Moon7Tue
8Wed10:559.111:367.84:370.85:20-0.47:184:29Full Moon8Wed
9Thu11:379.35:200.55:59-0.67:184:30Full Moon9Thu
10Fri12:168.112:209.46:030.36:40-0.77:174:31Waning Gibbous10Fri
11Sat12:578.31:059.46:490.17:22-0.87:174:32Waning Gibbous11Sat
12Sun1:408.61:529.27:37-0.18:07-0.77:174:33Waning Gibbous12Sun
13Mon2:268.72:438.98:29-0.18:55-0.57:164:34Waning Gibbous13Mon
14Tue3:168.93:398.59:25-0.19:46-0.27:164:36Third Quarter14Tue
15Wed4:098.94:398.010:260.010:420.17:154:37Third Quarter15Wed
16Thu5:068.95:447.711:290.111:420.47:154:38Third Quarter16Thu
17Fri6:088.96:537.512:370.17:144:39Waning Crescent17Fri
18Sat7:139.08:027.512:460.61:44-0.17:144:40Waning Crescent18Sat
19Sun8:179.19:047.61:500.62:47-0.37:134:42Waning Crescent19Sun
20Mon9:169.310:017.92:510.53:43-0.57:124:43New Moon20Mon
21Tue10:109.410:528.03:470.44:35-0.67:124:44New Moon21Tue
22Wed11:009.411:398.24:390.25:22-0.77:114:45New Moon22Wed
23Thu11:479.35:270.26:05-0.67:104:47New Moon23Thu
24Fri12:228.212:309.16:130.26:45-0.47:094:48Waxing Crescent24Fri
25Sat1:038.21:128.86:570.37:24-0.17:094:49Waxing Crescent25Sat
26Sun1:428.21:538.47:400.48:030.27:084:51Waxing Crescent26Sun
27Mon2:218.12:367.98:240.68:420.67:074:52Waxing Crescent27Mon
28Tue3:018.03:217.59:100.99:240.97:064:53First Quarter28Tue
29Wed3:447.94:107.110:001.110:081.37:054:55First Quarter29Wed
30Thu4:307.75:036.810:521.210:571.57:044:56First Quarter30Thu
31Fri5:217.66:016.511:481.311:501.77:034:57First Quarter31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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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 21% 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 (21% 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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