Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, July 26, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 4:46 am (0.7 ft)
Next high tide : in 2h 49m at 10:14 pm (8.5 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:27 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jun 1973

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:048.75:48-1.15:550.05:058:15New Moon1Fri
2Sat12:1310.41:008.86:42-1.36:50-0.15:058:16New Moon2Sat
3Sun1:0910.41:568.87:36-1.37:460.05:058:16Waxing Crescent3Sun
4Mon2:0610.22:538.98:30-1.28:440.15:048:17Waxing Crescent4Mon
5Tue3:049.93:518.99:26-0.99:450.35:048:18Waxing Crescent5Tue
6Wed4:049.54:508.810:24-0.610:480.45:038:19First Quarter6Wed
7Thu5:069.15:488.811:22-0.211:520.55:038:19First Quarter7Thu
8Fri6:088.66:458.812:190.25:038:20First Quarter8Fri
9Sat7:108.27:418.812:550.61:150.55:038:20First Quarter9Sat
10Sun8:118.08:358.81:570.52:110.85:038:21Waxing Gibbous10Sun
11Mon9:087.89:258.92:550.53:031.05:028:22Waxing Gibbous11Mon
12Tue10:007.710:108.93:480.43:511.15:028:22Waxing Gibbous12Tue
13Wed10:477.710:528.94:350.34:351.25:028:23Waxing Gibbous13Wed
14Thu11:307.711:318.95:180.25:151.25:028:23Full Moon14Thu
15Fri12:107.75:570.25:541.35:028:23Full Moon15Fri
16Sat12:088.912:487.76:340.26:311.35:028:24Full Moon16Sat
17Sun12:448.81:257.77:090.27:081.35:028:24Full Moon17Sun
18Mon1:218.82:027.77:450.37:461.35:028:25Waning Gibbous18Mon
19Tue1:598.72:397.78:200.38:251.35:028:25Waning Gibbous19Tue
20Wed2:388.63:177.88:570.49:071.35:038:25Waning Gibbous20Wed
21Thu3:208.53:578.09:360.49:531.25:038:25Waning Gibbous21Thu
22Fri4:058.34:408.110:180.510:431.15:038:26Third Quarter22Fri
23Sat4:548.15:268.411:030.611:371.05:038:26Third Quarter23Sat
24Sun5:467.96:168.611:530.75:048:26Third Quarter24Sun
25Mon6:447.87:108.912:340.812:460.75:048:26Waning Crescent25Mon
26Tue7:467.78:079.21:350.51:440.75:048:26Waning Crescent26Tue
27Wed8:497.89:079.62:380.12:440.65:058:26Waning Crescent27Wed
28Thu9:518.010:059.93:38-0.33:440.45:058:26Waning Crescent28Thu
29Fri10:518.311:0310.24:37-0.74:420.15:068:26New Moon29Fri
30Sat11:498.65:33-1.15:39-0.15:068:26New Moon30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

Common Questions About Seavey Island, NH Tides

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What time does the tide turn (slack tide) in Seavey Island, NH today?

Slack tide in Seavey Island, NH is approximately 1:30 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 92% 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 Gibbous (92% 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