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 5h 25m 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 - May 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:068.53:487.69:280.49:361.45:357:44Waxing Crescent1Tue
2Wed3:508.34:357.510:130.610:231.55:347:45First Quarter2Wed
3Thu4:388.25:257.411:030.611:171.55:327:46First Quarter3Thu
4Fri5:328.26:187.611:560.75:317:47First Quarter4Fri
5Sat6:298.27:147.812:141.412:510.65:307:48First Quarter5Sat
6Sun7:308.38:108.31:151.11:490.45:287:50Waxing Gibbous6Sun
7Mon8:328.59:058.82:170.72:450.15:277:51Waxing Gibbous7Mon
8Tue9:318.89:579.43:170.13:39-0.25:267:52Waxing Gibbous8Tue
9Wed10:279.110:489.94:12-0.64:31-0.55:257:53Full Moon9Wed
10Thu11:219.411:3910.35:06-1.15:22-0.75:247:54Full Moon10Thu
11Fri12:169.45:59-1.56:14-0.75:237:55Full Moon11Fri
12Sat12:3010.51:119.46:52-1.77:06-0.65:217:56Full Moon12Sat
13Sun1:2310.52:069.27:45-1.67:59-0.45:207:57Waning Gibbous13Sun
14Mon2:1710.33:039.08:40-1.38:550.05:197:58Waning Gibbous14Mon
15Tue3:149.94:028.79:38-1.09:540.45:187:59Waning Gibbous15Tue
16Wed4:139.55:038.510:38-0.510:570.75:178:01Third Quarter16Wed
17Thu5:169.06:058.311:39-0.15:168:02Third Quarter17Thu
18Fri6:198.67:058.212:010.912:400.25:158:03Third Quarter18Fri
19Sat7:228.38:038.31:061.01:390.55:148:04Third Quarter19Sat
20Sun8:238.28:578.42:081.02:340.65:138:05Waning Crescent20Sun
21Mon9:198.19:448.53:050.83:240.75:138:06Waning Crescent21Mon
22Tue10:088.110:268.73:560.64:090.85:128:07Waning Crescent22Tue
23Wed10:528.011:048.84:410.44:490.95:118:08Waning Crescent23Wed
24Thu11:328.011:408.85:210.35:250.95:108:09New Moon24Thu
25Fri12:118.05:580.26:011.05:108:09New Moon25Fri
26Sat12:148.812:498.06:340.16:361.15:098:10New Moon26Sat
27Sun12:488.81:267.97:100.17:111.25:088:11New Moon27Sun
28Mon1:248.82:037.87:460.17:481.25:088:12Waxing Crescent28Mon
29Tue2:018.82:437.78:230.28:271.35:078:13Waxing Crescent29Tue
30Wed2:408.73:247.79:030.29:101.35:068:14Waxing Crescent30Wed
31Thu3:248.64:097.79:470.39:581.35:068:15Waxing Crescent31Thu
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