Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Thursday, August 6, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 51m at 11:23 am (0.7 ft)
Next high tide : 5:46 pm (8.9 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 5:39 am
Moon phase : Third Quarter (44% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Aug 2091

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:079.61:428.67:24-0.57:350.35:348:04Waning Gibbous1Wed
2Thu1:519.32:248.58:06-0.38:190.55:358:03Waning Gibbous2Thu
3Fri2:338.93:048.48:460.09:030.75:368:01Waning Gibbous3Fri
4Sat3:158.63:458.39:260.49:480.95:378:00Waning Gibbous4Sat
5Sun3:588.24:268.210:070.710:351.15:387:59Third Quarter5Sun
6Mon4:447.85:108.110:501.011:231.25:397:58Third Quarter6Mon
7Tue5:337.55:568.011:351.35:407:56Third Quarter7Tue
8Wed6:247.36:458.012:151.312:231.55:417:55Third Quarter8Wed
9Thu7:197.27:388.11:091.31:151.65:427:54Waning Crescent9Thu
10Fri8:167.28:318.32:041.22:081.55:437:52Waning Crescent10Fri
11Sat9:117.39:228.62:580.93:011.35:457:51Waning Crescent11Sat
12Sun10:017.610:118.93:480.63:511.05:467:49Waning Crescent12Sun
13Mon10:487.910:579.24:340.24:390.75:477:48New Moon13Mon
14Tue11:338.311:449.55:18-0.25:260.35:487:46New Moon14Tue
15Wed12:188.66:02-0.56:130.05:497:45New Moon15Wed
16Thu12:319.61:049.06:46-0.77:02-0.35:507:43New Moon16Thu
17Fri1:189.71:509.27:32-0.87:52-0.45:517:42Waxing Crescent17Fri
18Sat2:089.62:389.48:19-0.88:44-0.55:527:40Waxing Crescent18Sat
19Sun3:009.43:309.59:09-0.79:40-0.45:537:39Waxing Crescent19Sun
20Mon3:569.14:259.510:02-0.410:39-0.35:547:37First Quarter20Mon
21Tue4:568.75:249.410:59-0.111:42-0.15:557:36First Quarter21Tue
22Wed6:008.46:269.312:000.25:577:34First Quarter22Wed
23Thu7:078.27:319.212:480.01:040.45:587:32Waxing Gibbous23Thu
24Fri8:148.18:359.31:550.02:090.55:597:31Waxing Gibbous24Fri
25Sat9:188.29:369.32:59-0.13:110.56:007:29Waxing Gibbous25Sat
26Sun10:158.410:309.43:57-0.34:080.36:017:27Waxing Gibbous26Sun
27Mon11:068.511:209.44:49-0.45:000.26:027:26Full Moon27Mon
28Tue11:538.65:36-0.45:470.16:037:24Full Moon28Tue
29Wed12:059.412:358.76:18-0.36:300.26:047:22Full Moon29Wed
30Thu12:469.21:138.66:58-0.27:110.26:057:21Full Moon30Thu
31Fri1:268.91:508.67:350.17:510.46:067:19Waning Gibbous31Fri
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 2:34 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 44% 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 (44% 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