Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

56°
H -°
L 53°
SW
3mph
Low tide
9:29 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 5h 45m at 9:29 am (1.1 ft)
Next high tide : 3:45 pm (8.5 ft)
Sunset today : 6:51 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Nov 1877

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:188.57:418.712:540.21:230.46:224:39Waning Crescent1Thu
2Fri8:149.08:418.91:520.02:24-0.16:234:37Waning Crescent2Fri
3Sat9:059.59:369.02:45-0.13:20-0.66:244:36New Moon3Sat
4Sun9:549.910:299.03:35-0.24:12-1.06:254:35New Moon4Sun
5Mon10:4110.011:198.94:24-0.25:02-1.16:274:33New Moon5Mon
6Tue11:2710.05:110.05:51-1.06:284:32New Moon6Tue
7Wed12:088.612:149.75:570.36:38-0.76:294:31Waxing Crescent7Wed
8Thu12:578.31:009.46:430.67:26-0.46:314:30Waxing Crescent8Thu
9Fri1:458.01:489.07:311.08:160.16:324:29Waxing Crescent9Fri
10Sat2:367.62:388.68:211.39:070.56:334:28Waxing Crescent10Sat
11Sun3:287.43:328.29:151.610:000.96:354:27First Quarter11Sun
12Mon4:227.24:277.810:121.810:541.16:364:26First Quarter12Mon
13Tue5:157.25:247.611:101.911:461.36:374:25First Quarter13Tue
14Wed6:087.36:217.512:091.86:384:24First Quarter14Wed
15Thu6:587.57:177.412:371.31:051.66:404:23Waxing Gibbous15Thu
16Fri7:457.88:087.51:241.31:571.36:414:22Waxing Gibbous16Fri
17Sat8:288.18:557.62:091.22:440.96:424:21Waxing Gibbous17Sat
18Sun9:078.59:397.72:501.23:260.56:434:20Waxing Gibbous18Sun
19Mon9:458.710:217.83:291.14:070.26:454:19Full Moon19Mon
20Tue10:239.011:027.84:071.04:470.06:464:19Full Moon20Tue
21Wed11:029.211:447.84:470.95:28-0.26:474:18Full Moon21Wed
22Thu11:449.35:280.86:11-0.36:484:17Full Moon22Thu
23Fri12:287.812:289.46:120.86:56-0.46:504:17Waning Gibbous23Fri
24Sat1:157.81:179.37:000.87:45-0.36:514:16Waning Gibbous24Sat
25Sun2:057.82:099.27:510.88:37-0.26:524:15Waning Gibbous25Sun
26Mon2:597.83:078.98:490.99:33-0.16:534:15Third Quarter26Mon
27Tue3:578.04:098.79:520.910:310.16:544:14Third Quarter27Tue
28Wed4:568.25:148.510:570.811:300.26:554:14Third Quarter28Wed
29Thu5:568.56:218.312:040.56:574:14Waning Crescent29Thu
30Fri6:558.87:268.312:290.21:100.26:584:13Waning Crescent30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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Common Questions About Seavey Island, NH Tides

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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 30% 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 (30% 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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