Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 7:03 pm (1.4 ft)
Next high tide : in 3h 12m at 1:22 pm (7.5 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:07 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Nov 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:288.82:389.98:190.19:05-0.87:175:34Waning Gibbous1Sat
2Sun2:268.42:369.58:150.69:04-0.46:194:33Waning Gibbous2Sun
3Mon3:278.03:379.09:151.010:070.16:204:32Third Quarter3Mon
4Tue4:297.74:418.510:191.311:090.56:214:31Third Quarter4Tue
5Wed5:327.65:458.211:251.56:234:29Third Quarter5Wed
6Thu6:327.66:488.012:100.712:301.46:244:28Waning Crescent6Thu
7Fri7:287.87:457.91:070.81:311.36:254:27Waning Crescent7Fri
8Sat8:178.08:367.91:580.92:241.06:264:26Waning Crescent8Sat
9Sun8:598.29:217.92:430.93:100.86:284:25Waning Crescent9Sun
10Mon9:378.410:027.93:231.03:510.66:294:24Waning Crescent10Mon
11Tue10:118.510:407.93:581.04:290.46:304:23New Moon11Tue
12Wed10:458.611:187.84:331.15:050.36:324:22New Moon12Wed
13Thu11:188.711:557.75:061.25:400.26:334:21New Moon13Thu
14Fri11:528.75:401.26:160.36:344:20New Moon14Fri
15Sat12:327.512:288.66:151.36:530.36:354:19Waxing Crescent15Sat
16Sun1:117.41:078.66:531.47:340.46:374:18Waxing Crescent16Sun
17Mon1:537.31:508.57:351.58:180.56:384:17Waxing Crescent17Mon
18Tue2:387.22:388.48:221.69:070.56:394:16Waxing Crescent18Tue
19Wed3:297.23:328.39:161.510:000.66:404:15First Quarter19Wed
20Thu4:237.44:318.210:161.410:550.56:424:15First Quarter20Thu
21Fri5:197.75:338.211:191.211:520.46:434:14First Quarter21Fri
22Sat6:168.26:378.312:230.86:444:13Waxing Gibbous22Sat
23Sun7:138.77:408.512:500.21:260.26:454:12Waxing Gibbous23Sun
24Mon8:089.38:408.71:470.02:26-0.46:464:12Waxing Gibbous24Mon
25Tue9:009.89:368.92:41-0.23:22-1.06:484:11Full Moon25Tue
26Wed9:5210.210:318.93:34-0.34:16-1.36:494:11Full Moon26Wed
27Thu10:4310.411:268.94:25-0.45:09-1.56:504:10Full Moon27Thu
28Fri11:3410.45:16-0.36:01-1.56:514:10Full Moon28Fri
29Sat12:198.712:2710.16:08-0.16:54-1.26:524:09Waning Gibbous29Sat
30Sun1:138.51:209.87:000.27:47-0.86:534:09Waning Gibbous30Sun
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 4:12 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 97% 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 Full Moon (97% 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