Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, June 26, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 25m at 3:45 am (0.6 ft)
Next high tide : 9:56 am (7.4 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:05 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Feb 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:367.76:136.712:021.26:584:54First Quarter1Wed
2Thu6:307.77:126.712:061.61:001.16:574:55Waxing Gibbous2Thu
3Fri7:267.98:086.91:021.51:560.96:564:57Waxing Gibbous3Fri
4Sat8:198.28:587.21:561.42:460.66:554:58Waxing Gibbous4Sat
5Sun9:078.59:447.52:471.03:310.26:534:59Waxing Gibbous5Sun
6Mon9:528.810:277.93:340.74:13-0.16:525:01Full Moon6Mon
7Tue10:369.111:088.34:180.24:53-0.56:515:02Full Moon7Tue
8Wed11:209.311:498.75:03-0.15:34-0.76:505:03Full Moon8Wed
9Thu12:049.35:48-0.46:16-0.96:485:05Waning Gibbous9Thu
10Fri12:329.012:509.36:35-0.66:59-0.96:475:06Waning Gibbous10Fri
11Sat1:169.21:389.17:23-0.77:45-0.76:465:07Waning Gibbous11Sat
12Sun2:049.32:308.78:15-0.68:35-0.56:455:09Waning Gibbous12Sun
13Mon2:569.23:288.39:12-0.49:30-0.16:435:10Third Quarter13Mon
14Tue3:539.14:308.010:14-0.210:300.26:425:11Third Quarter14Tue
15Wed4:558.95:397.711:200.011:360.56:405:13Third Quarter15Wed
16Thu6:028.86:507.612:300.06:395:14Waning Crescent16Thu
17Fri7:128.87:597.712:440.61:39-0.16:375:15Waning Crescent17Fri
18Sat8:189.09:008.01:520.52:41-0.36:365:17Waning Crescent18Sat
19Sun9:179.29:548.32:530.23:36-0.56:355:18Waning Crescent19Sun
20Mon10:099.310:428.63:48-0.14:24-0.76:335:19New Moon20Mon
21Tue10:569.311:258.74:37-0.35:08-0.76:325:21New Moon21Tue
22Wed11:399.25:22-0.35:48-0.66:305:22New Moon22Wed
23Thu12:048.712:199.06:04-0.36:26-0.36:285:23New Moon23Thu
24Fri12:418.712:578.76:44-0.27:02-0.16:275:24Waxing Crescent24Fri
25Sat1:168.61:358.37:230.07:380.36:255:26Waxing Crescent25Sat
26Sun1:528.42:148.08:030.28:150.66:245:27Waxing Crescent26Sun
27Mon2:308.22:567.68:440.58:540.96:225:28Waxing Crescent27Mon
28Tue3:108.13:417.39:290.89:371.26:205:30First Quarter28Tue
29Wed3:567.94:317.010:181.010:251.46:195:31First Quarter29Wed
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 6:50 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 90% 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 (90% 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