Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

56°
H -°
L 51°
SW
5mph
High tide
3:35 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 9:29 am (1.1 ft)
Next high tide : in 1h 24m at 3:35 am (7.9 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 - Jan 1878

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:199.110:037.72:560.73:47-0.37:184:22New Moon1Tue
2Wed10:099.210:527.73:470.74:36-0.37:184:23New Moon2Wed
3Thu10:559.111:377.74:350.75:21-0.37:184:24New Moon3Thu
4Fri11:399.05:200.76:02-0.27:184:25New Moon4Fri
5Sat12:187.712:208.86:030.86:41-0.17:184:26Waxing Crescent5Sat
6Sun12:577.712:598.66:440.97:190.17:184:27Waxing Crescent6Sun
7Mon1:357.71:398.37:251.07:560.37:184:28Waxing Crescent7Mon
8Tue2:137.72:208.08:071.18:330.67:184:29Waxing Crescent8Tue
9Wed2:537.73:037.78:521.29:130.87:184:30First Quarter9Wed
10Thu3:347.73:497.39:401.39:551.17:174:31First Quarter10Thu
11Fri4:187.74:407.010:301.410:401.37:174:32First Quarter11Fri
12Sat5:047.75:346.811:241.311:301.57:174:34First Quarter12Sat
13Sun5:557.86:336.712:211.27:164:35First Quarter13Sun
14Mon6:498.07:346.712:231.51:201.07:164:36Waxing Gibbous14Mon
15Tue7:448.38:316.91:191.42:160.67:154:37Waxing Gibbous15Tue
16Wed8:378.79:237.32:151.23:090.17:154:38Waxing Gibbous16Wed
17Thu9:289.210:137.73:080.83:58-0.47:144:40Full Moon17Thu
18Fri10:199.611:028.13:590.44:46-0.87:144:41Full Moon18Fri
19Sat11:099.911:508.54:500.05:33-1.27:134:42Full Moon19Sat
20Sun11:5910.05:40-0.46:20-1.37:124:43Waning Gibbous20Sun
21Mon12:378.912:5010.06:32-0.67:07-1.37:124:45Waning Gibbous21Mon
22Tue1:259.11:429.77:24-0.77:55-1.17:114:46Waning Gibbous22Tue
23Wed2:159.22:369.28:19-0.68:46-0.87:104:47Waning Gibbous23Wed
24Thu3:089.23:348.79:18-0.49:39-0.37:094:48Third Quarter24Thu
25Fri4:039.14:358.110:19-0.210:360.27:084:50Third Quarter25Fri
26Sat5:018.95:417.611:240.111:360.67:084:51Third Quarter26Sat
27Sun6:048.76:507.312:320.27:074:52Waning Crescent27Sun
28Mon7:088.67:577.212:401.01:390.37:064:54Waning Crescent28Mon
29Tue8:118.68:587.31:441.12:410.27:054:55Waning Crescent29Tue
30Wed9:088.79:517.42:431.13:350.17:044:56Waning Crescent30Wed
31Thu9:588.710:377.53:350.94:220.07:034:58New Moon31Thu
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 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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