Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide (tomorrow) : in 6h 24m at 1:20 am (0.9 ft)
Next high tide (tomorrow) : 7:30 am (7.2 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:23 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jul 1980

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:489.52:318.58:10-0.68:220.45:078:26Waning Gibbous1Tue
2Wed2:379.43:208.68:57-0.69:150.45:078:25Waning Gibbous2Wed
3Thu3:309.34:128.89:48-0.510:120.35:088:25Third Quarter3Thu
4Fri4:269.15:078.910:42-0.411:130.35:098:25Third Quarter4Fri
5Sat5:268.86:059.111:38-0.25:098:25Third Quarter5Sat
6Sun6:298.67:049.212:160.212:37-0.15:108:24Third Quarter6Sun
7Mon7:358.48:059.41:200.11:380.15:118:24Waning Crescent7Mon
8Tue8:408.49:049.62:25-0.12:390.25:118:24Waning Crescent8Tue
9Wed9:438.510:019.83:27-0.43:370.25:128:23Waning Crescent9Wed
10Thu10:418.510:549.94:24-0.64:320.15:138:23New Moon10Thu
11Fri11:348.611:449.95:17-0.85:240.25:148:22New Moon11Fri
12Sat12:248.66:06-0.86:130.25:148:22New Moon12Sat
13Sun12:329.71:118.56:53-0.77:000.45:158:21New Moon13Sun
14Mon1:179.51:558.47:37-0.57:450.65:168:20Waxing Crescent14Mon
15Tue2:009.22:378.38:19-0.28:290.85:178:20Waxing Crescent15Tue
16Wed2:438.93:198.29:000.19:131.05:188:19Waxing Crescent16Wed
17Thu3:258.54:018.19:420.49:591.25:198:18Waxing Crescent17Thu
18Fri4:108.24:438.010:230.710:471.35:208:18First Quarter18Fri
19Sat4:567.95:278.011:070.911:361.45:208:17First Quarter19Sat
20Sun5:457.66:138.011:511.25:218:16First Quarter20Sun
21Mon6:377.47:018.012:281.412:391.45:228:15First Quarter21Mon
22Tue7:327.27:528.21:221.31:291.55:238:14Waxing Gibbous22Tue
23Wed8:287.28:438.42:171.12:211.45:248:13Waxing Gibbous23Wed
24Thu9:227.39:328.73:100.83:121.35:258:12Waxing Gibbous24Thu
25Fri10:137.610:209.03:590.54:011.05:268:12Waxing Gibbous25Fri
26Sat11:007.811:079.34:460.14:490.75:278:11Full Moon26Sat
27Sun11:478.111:549.65:31-0.35:360.45:288:09Full Moon27Sun
28Mon12:338.46:16-0.66:250.15:298:08Full Moon28Mon
29Tue12:429.71:208.77:02-0.87:14-0.15:308:07Waning Gibbous29Tue
30Wed1:319.82:099.07:49-0.98:06-0.25:318:06Waning Gibbous30Wed
31Thu2:229.72:599.28:37-0.99:00-0.25:328:05Waning Gibbous31Thu
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 4:25 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 transitional phase. Tonight's moon is 62% 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 First Quarter (62% 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