Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 2:42 am (0.1 ft)
Next high tide : in 4h 24m at 8:09 pm (9.3 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - May 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:128.011:198.94:580.25:040.85:357:44New Moon1Fri
2Sat11:548.111:599.25:39-0.15:440.75:347:45New Moon2Sat
3Sun12:378.16:21-0.36:250.65:327:46New Moon3Sun
4Mon12:409.41:228.27:04-0.57:090.55:317:47Waxing Crescent4Mon
5Tue1:259.52:088.27:50-0.57:560.55:307:48Waxing Crescent5Tue
6Wed2:139.42:588.18:39-0.58:480.65:297:49Waxing Crescent6Wed
7Thu3:059.33:538.29:31-0.49:440.75:277:50Waxing Crescent7Thu
8Fri4:029.14:518.210:28-0.310:470.75:267:52First Quarter8Fri
9Sat5:048.95:538.411:27-0.111:520.75:257:53First Quarter9Sat
10Sun6:098.76:548.612:280.05:247:54First Quarter10Sun
11Mon7:168.67:568.912:590.51:300.05:237:55Waxing Gibbous11Mon
12Tue8:238.68:549.22:060.22:300.05:217:56Waxing Gibbous12Tue
13Wed9:258.79:489.53:08-0.23:260.05:207:57Waxing Gibbous13Wed
14Thu10:228.710:389.74:05-0.54:180.05:197:58Waxing Gibbous14Thu
15Fri11:148.711:269.84:58-0.85:070.15:187:59Full Moon15Fri
16Sat12:048.65:47-0.85:540.25:178:00Full Moon16Sat
17Sun12:119.712:508.56:33-0.86:380.45:168:01Full Moon17Sun
18Mon12:549.51:358.37:17-0.67:210.75:158:02Waning Gibbous18Mon
19Tue1:369.32:188.08:00-0.38:041.05:148:03Waning Gibbous19Tue
20Wed2:189.03:007.88:420.18:471.25:138:04Waning Gibbous20Wed
21Thu3:008.73:437.79:250.49:331.55:138:05Waning Gibbous21Thu
22Fri3:458.34:287.610:090.710:201.65:128:06Third Quarter22Fri
23Sat4:328.05:147.510:530.911:111.75:118:07Third Quarter23Sat
24Sun5:217.86:017.611:391.15:108:08Third Quarter24Sun
25Mon6:137.66:497.712:041.712:261.35:098:09Third Quarter25Mon
26Tue7:087.47:387.912:581.61:151.45:098:10Third Quarter26Tue
27Wed8:047.48:268.21:531.42:041.45:088:11Waning Crescent27Wed
28Thu8:587.49:138.52:471.02:531.35:078:12Waning Crescent28Thu
29Fri9:497.69:598.93:370.63:401.25:078:13Waning Crescent29Fri
30Sat10:387.810:449.24:250.24:260.95:068:14New Moon30Sat
31Sun11:267.911:309.55:11-0.25:130.75:068:14New Moon31Sun
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 11:25 pm — 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 20% 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 Waning Crescent (20% 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