Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 12:35 am (0.6 ft)
Next high tide : in 3h 45m at 6:13 pm (8.8 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:11 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Oct 2052

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:527.36:047.911:461.76:416:23First Quarter1Tue
2Wed6:477.27:007.912:281.212:411.76:426:21First Quarter2Wed
3Thu7:417.47:568.11:221.11:381.56:436:19Waxing Gibbous3Thu
4Fri8:357.78:518.32:160.92:341.26:446:17Waxing Gibbous4Fri
5Sat9:238.19:428.63:060.73:260.76:456:16Waxing Gibbous5Sat
6Sun10:098.610:308.93:530.34:150.26:476:14Waxing Gibbous6Sun
7Mon10:539.111:179.14:370.05:02-0.36:486:12Full Moon7Mon
8Tue11:379.55:21-0.35:49-0.76:496:11Full Moon8Tue
9Wed12:049.312:229.86:06-0.56:37-1.06:506:09Full Moon9Wed
10Thu12:539.31:1010.06:53-0.67:27-1.16:516:07Waning Gibbous10Thu
11Fri1:439.22:0010.07:42-0.58:19-1.16:526:05Waning Gibbous11Fri
12Sat2:379.02:539.98:34-0.39:14-0.86:546:04Waning Gibbous12Sat
13Sun3:348.83:519.69:310.010:14-0.66:556:02Third Quarter13Sun
14Mon4:368.54:559.310:320.311:18-0.36:566:00Third Quarter14Mon
15Tue5:428.46:019.111:380.56:575:59Third Quarter15Tue
16Wed6:488.37:108.912:23-0.112:460.66:585:57Third Quarter16Wed
17Thu7:548.58:168.91:290.01:540.57:005:56Waning Crescent17Thu
18Fri8:548.79:178.92:310.02:570.37:015:54Waning Crescent18Fri
19Sat9:488.910:118.93:270.03:530.07:025:52Waning Crescent19Sat
20Sun10:369.110:598.94:17-0.14:43-0.27:035:51New Moon20Sun
21Mon11:199.211:438.85:020.05:28-0.37:045:49New Moon21Mon
22Tue11:589.25:430.16:09-0.37:065:48New Moon22Tue
23Wed12:248.712:359.16:210.36:48-0.27:075:46New Moon23Wed
24Thu1:028.51:109.06:570.57:260.07:085:45Waxing Crescent24Thu
25Fri1:408.21:458.87:330.88:030.27:095:43Waxing Crescent25Fri
26Sat2:178.02:218.68:091.08:410.47:115:42Waxing Crescent26Sat
27Sun2:577.83:008.58:471.29:210.67:125:40Waxing Crescent27Sun
28Mon3:397.63:438.39:291.410:050.77:135:39Waxing Crescent28Mon
29Tue4:257.54:318.110:161.510:520.97:145:38First Quarter29Tue
30Wed5:137.45:228.011:061.611:421.07:165:36First Quarter30Wed
31Thu6:057.56:168.012:011.57:175:35First Quarter31Thu
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 9:24 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 neap phase. Tonight's moon is 41% 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 minimum.

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 Third Quarter (41% illuminated). This places Seavey Island, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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