Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

63°
H -°
L 53°
SE
7mph
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 5h 33m 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 - Feb 1879

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:167.67:026.512:481.37:024:59Waxing Gibbous1Sat
2Sun7:137.88:016.612:471.71:461.07:015:00Waxing Gibbous2Sun
3Mon8:088.18:536.91:431.62:390.77:005:01Waxing Gibbous3Mon
4Tue8:588.59:407.32:361.33:260.36:595:03Waxing Gibbous4Tue
5Wed9:458.910:247.73:250.94:09-0.26:575:04Full Moon5Wed
6Thu10:309.211:068.24:120.44:51-0.66:565:05Full Moon6Thu
7Fri11:159.511:488.64:57-0.15:32-0.96:555:07Full Moon7Fri
8Sat12:019.65:44-0.46:14-1.06:545:08Full Moon8Sat
9Sun12:309.012:479.56:31-0.76:57-1.06:525:09Waning Gibbous9Sun
10Mon1:149.31:369.37:20-0.87:43-0.96:515:11Waning Gibbous10Mon
11Tue2:019.42:278.98:12-0.88:31-0.56:505:12Waning Gibbous11Tue
12Wed2:519.33:238.49:08-0.69:24-0.16:485:13Third Quarter12Wed
13Thu3:469.24:247.910:08-0.310:220.36:475:15Third Quarter13Thu
14Fri4:468.95:317.511:140.011:250.76:465:16Third Quarter14Fri
15Sat5:528.76:437.312:230.26:445:17Waning Crescent15Sat
16Sun7:028.67:537.312:330.91:330.26:435:19Waning Crescent16Sun
17Mon8:098.78:557.51:410.92:360.06:415:20Waning Crescent17Mon
18Tue9:098.89:497.82:440.73:32-0.16:405:21Waning Crescent18Tue
19Wed10:019.010:368.13:390.54:20-0.36:385:22New Moon19Wed
20Thu10:489.011:198.24:280.35:03-0.36:375:24New Moon20Thu
21Fri11:318.911:578.45:130.15:41-0.26:355:25New Moon21Fri
22Sat12:108.75:540.16:17-0.16:345:26New Moon22Sat
23Sun12:328.412:488.56:330.16:520.16:325:28Waxing Crescent23Sun
24Mon1:068.41:258.27:120.27:260.46:315:29Waxing Crescent24Mon
25Tue1:418.32:037.87:510.48:020.76:295:30Waxing Crescent25Tue
26Wed2:188.22:457.48:320.68:401.06:285:31Waxing Crescent26Wed
27Thu2:588.03:307.19:170.99:231.36:265:33First Quarter27Thu
28Fri3:427.84:206.810:061.110:111.66:245:34First Quarter28Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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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 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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