Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

61°
H -°
L 58°
SSW
5mph
Low tide
7:24 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, September 13, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 4h 05m at 7:24 am (-0.2 ft)
Next high tide : 1:40 pm (9.3 ft)
Sunset today : 6:56 pm
Sunrise tomorrow : 6:20 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Oct 1884

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:147.98:298.41:550.82:121.05:405:23Waxing Gibbous1Wed
2Thu8:598.39:168.82:410.53:000.55:425:22Waxing Gibbous2Thu
3Fri9:418.810:029.03:250.13:460.05:435:20Full Moon3Fri
4Sat10:239.310:479.34:07-0.24:31-0.55:445:18Full Moon4Sat
5Sun11:059.611:339.44:50-0.45:17-0.95:455:16Full Moon5Sun
6Mon11:499.95:34-0.56:04-1.15:465:15Waning Gibbous6Mon
7Tue12:219.312:3610.06:20-0.56:53-1.15:475:13Waning Gibbous7Tue
8Wed1:119.21:2510.07:08-0.47:45-1.05:485:11Waning Gibbous8Wed
9Thu2:048.92:199.88:00-0.18:41-0.75:505:09Waning Gibbous9Thu
10Fri3:028.73:189.58:580.29:42-0.45:515:08Third Quarter10Fri
11Sat4:048.44:229.210:000.510:46-0.15:525:06Third Quarter11Sat
12Sun5:108.35:309.011:060.611:510.15:535:04Third Quarter12Sun
13Mon6:178.36:388.812:150.75:545:03Waning Crescent13Mon
14Tue7:218.57:438.812:560.11:210.55:565:01Waning Crescent14Tue
15Wed8:198.78:428.91:560.12:220.35:574:59Waning Crescent15Wed
16Thu9:108.99:348.92:500.03:160.05:584:58Waning Crescent16Thu
17Fri9:579.110:218.93:380.04:04-0.25:594:56New Moon17Fri
18Sat10:399.211:058.74:210.14:49-0.36:004:55New Moon18Sat
19Sun11:189.211:468.65:020.25:30-0.26:024:53New Moon19Sun
20Mon11:559.15:400.46:10-0.16:034:51New Moon20Mon
21Tue12:258.312:318.96:170.76:480.16:044:50Waxing Crescent21Tue
22Wed1:048.11:098.76:550.97:270.36:054:48Waxing Crescent22Wed
23Thu1:447.91:488.57:341.18:080.56:074:47Waxing Crescent23Thu
24Fri2:267.62:318.38:161.48:520.86:084:45Waxing Crescent24Fri
25Sat3:127.53:178.19:021.69:401.06:094:44First Quarter25Sat
26Sun4:017.34:087.99:531.710:301.16:104:42First Quarter26Sun
27Mon4:537.35:027.810:471.711:221.16:124:41First Quarter27Mon
28Tue5:457.55:587.911:431.66:134:40First Quarter28Tue
29Wed6:387.76:558.012:151.012:401.36:144:38Waxing Gibbous29Wed
30Thu7:298.27:508.31:070.81:350.86:154:37Waxing Gibbous30Thu
31Fri8:178.78:428.61:580.42:270.36:174:35Waxing 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 spring phase. Tonight's moon is 7% 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 (7% 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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