Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

50°
H 64°
L 46°
N
5mph
High tide
6:07 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 11:57 am (2.0 ft)
Next high tide : in 5m at 6:07 am (6.9 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Oct 1873

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:167.36:308.612:081.35:445:28Waxing Gibbous1Wed
2Thu7:207.77:369.01:000.41:140.95:455:26Waxing Gibbous2Thu
3Fri8:208.28:379.42:010.02:170.45:465:24Waxing Gibbous3Fri
4Sat9:138.99:349.72:56-0.43:15-0.35:475:23Full Moon4Sat
5Sun10:049.510:289.93:47-0.74:10-0.85:495:21Full Moon5Sun
6Mon10:539.911:209.94:36-0.95:03-1.25:505:19Full Moon6Mon
7Tue11:4110.15:24-0.95:54-1.35:515:17Full Moon7Tue
8Wed12:129.712:2910.16:12-0.76:45-1.25:525:16Waning Gibbous8Wed
9Thu1:049.31:189.97:00-0.37:38-0.95:535:14Waning Gibbous9Thu
10Fri1:578.82:099.57:500.28:32-0.55:545:12Waning Gibbous10Fri
11Sat2:538.33:039.18:440.89:310.05:565:11Third Quarter11Sat
12Sun3:527.84:028.69:421.210:320.55:575:09Third Quarter12Sun
13Mon4:547.55:048.210:431.611:350.85:585:07Third Quarter13Mon
14Tue5:577.36:088.011:471.85:595:06Third Quarter14Tue
15Wed6:587.37:108.012:371.012:511.76:005:04Waning Crescent15Wed
16Thu7:537.58:068.01:351.01:491.56:025:02Waning Crescent16Thu
17Fri8:407.78:548.12:240.92:401.36:035:01Waning Crescent17Fri
18Sat9:228.09:378.23:070.83:240.96:044:59Waning Crescent18Sat
19Sun9:588.310:178.33:440.84:040.76:054:57New Moon19Sun
20Mon10:338.510:548.24:190.74:410.46:064:56New Moon20Mon
21Tue11:058.711:318.24:510.75:170.36:084:54New Moon21Tue
22Wed11:378.85:240.85:520.26:094:53New Moon22Wed
23Thu12:078.112:118.85:570.96:290.26:104:51Waxing Crescent23Thu
24Fri12:457.912:468.86:331.07:080.26:114:50Waxing Crescent24Fri
25Sat1:247.71:268.87:121.17:500.36:134:48Waxing Crescent25Sat
26Sun2:087.52:108.77:551.38:390.46:144:47Waxing Crescent26Sun
27Mon2:587.43:028.68:451.49:330.56:154:45First Quarter27Mon
28Tue3:547.34:018.59:431.510:330.56:174:44First Quarter28Tue
29Wed4:557.45:058.510:461.411:350.46:184:43First Quarter29Wed
30Thu5:587.76:128.611:531.26:194:41First Quarter30Thu
31Fri7:008.17:198.812:370.31:000.76:204:40Waxing Gibbous31Fri
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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Seavey Island, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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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