Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

54°
H -°
L 48°
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 3h 26m 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 - Jan 1874

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:539.410:387.93:320.54:21-0.67:184:22Full Moon1Thu
2Fri10:429.411:267.94:220.55:09-0.67:184:23Full Moon2Fri
3Sat11:299.35:100.65:55-0.57:184:24Full Moon3Sat
4Sun12:127.812:139.15:550.76:38-0.37:184:25Waning Gibbous4Sun
5Mon12:557.712:568.86:390.87:19-0.17:184:26Waning Gibbous5Mon
6Tue1:377.61:398.57:231.08:000.27:184:27Waning Gibbous6Tue
7Wed2:187.62:228.28:081.18:410.57:184:28Waning Gibbous7Wed
8Thu3:007.53:077.88:551.39:230.87:184:29Waning Gibbous8Thu
9Fri3:447.53:557.49:451.410:061.07:184:30Third Quarter9Fri
10Sat4:287.54:467.110:371.510:521.37:174:31Third Quarter10Sat
11Sun5:157.55:416.911:311.511:401.57:174:32Third Quarter11Sun
12Mon6:057.66:396.712:271.47:174:34Third Quarter12Mon
13Tue6:567.87:376.712:311.61:241.17:164:35Waning Crescent13Tue
14Wed7:488.18:326.91:241.62:180.87:164:36Waning Crescent14Wed
15Thu8:378.49:237.12:161.43:080.47:154:37Waning Crescent15Thu
16Fri9:258.810:117.43:051.13:55-0.17:154:38New Moon16Fri
17Sat10:129.210:577.73:530.84:41-0.57:144:40New Moon17Sat
18Sun11:009.511:438.04:410.45:26-0.87:144:41New Moon18Sun
19Mon11:489.85:290.16:12-1.17:134:42New Moon19Mon
20Tue12:298.312:379.86:18-0.26:58-1.17:124:43Waxing Crescent20Tue
21Wed1:168.61:279.77:09-0.37:45-1.17:124:45Waxing Crescent21Wed
22Thu2:048.82:209.48:03-0.38:34-0.87:114:46Waxing Crescent22Thu
23Fri2:558.93:168.98:59-0.39:26-0.57:104:47First Quarter23Fri
24Sat3:498.94:158.410:00-0.110:21-0.17:094:48First Quarter24Sat
25Sun4:468.95:197.911:030.011:190.37:084:50First Quarter25Sun
26Mon5:458.86:277.612:090.17:084:51First Quarter26Mon
27Tue6:488.77:357.412:210.71:170.17:074:52Waxing Gibbous27Tue
28Wed7:518.88:397.41:240.92:210.07:064:54Waxing Gibbous28Wed
29Thu8:508.89:367.52:250.93:19-0.17:054:55Waxing Gibbous29Thu
30Fri9:448.910:277.63:210.84:10-0.27:044:56Full Moon30Fri
31Sat10:338.911:137.74:110.74:57-0.37:034:58Full Moon31Sat
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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