Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

63°
H 64°
L 47°
NE
6mph
Low tide
11:57 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Saturday, September 19, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 26m at 11:57 am (2.0 ft)
Next high tide : 6:16 pm (7.8 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Mar 1873

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:379.612:599.96:40-1.27:07-1.26:225:36Waxing Crescent1Sat
2Sun1:259.61:509.47:32-1.17:55-0.86:205:37Waxing Crescent2Sun
3Mon2:149.42:448.88:26-0.88:45-0.26:195:38Waxing Crescent3Mon
4Tue3:059.13:418.29:23-0.49:380.46:175:40First Quarter4Tue
5Wed3:598.74:417.610:220.110:350.96:155:41First Quarter5Wed
6Thu4:578.35:447.211:250.511:351.46:135:42First Quarter6Thu
7Fri5:598.06:506.912:310.86:125:43First Quarter7Fri
8Sat7:047.97:536.912:391.61:350.86:105:44Waxing Gibbous8Sat
9Sun8:047.98:487.11:421.62:330.86:085:46Waxing Gibbous9Sun
10Mon8:578.19:357.32:371.43:220.66:075:47Waxing Gibbous10Mon
11Tue9:438.210:167.53:261.24:030.56:055:48Waxing Gibbous11Tue
12Wed10:248.410:537.84:080.94:400.36:035:49Full Moon12Wed
13Thu11:028.411:278.04:470.75:130.36:015:50Full Moon13Thu
14Fri11:388.511:588.25:230.55:440.36:005:52Full Moon14Fri
15Sat12:128.45:580.46:150.35:585:53Full Moon15Sat
16Sun12:298.312:478.36:330.36:470.45:565:54Waning Gibbous16Sun
17Mon1:018.41:248.17:090.27:210.55:545:55Waning Gibbous17Mon
18Tue1:358.52:037.87:490.27:590.75:535:56Waning Gibbous18Tue
19Wed2:138.52:477.68:320.38:420.95:515:58Waning Gibbous19Wed
20Thu2:578.53:377.39:220.49:311.15:495:59Third Quarter20Thu
21Fri3:488.44:347.110:180.510:271.25:476:00Third Quarter21Fri
22Sat4:478.45:387.111:200.511:311.25:456:01Third Quarter22Sat
23Sun5:528.56:477.212:270.45:446:02Waning Crescent23Sun
24Mon7:028.77:537.712:391.01:330.15:426:03Waning Crescent24Mon
25Tue8:099.08:528.21:470.62:33-0.35:406:05Waning Crescent25Tue
26Wed9:109.49:468.82:490.13:28-0.75:386:06Waning Crescent26Wed
27Thu10:069.710:369.43:47-0.54:19-1.05:366:07New Moon27Thu
28Fri10:599.811:249.74:40-1.05:07-1.15:356:08New Moon28Fri
29Sat11:509.85:32-1.35:54-1.05:336:09New Moon29Sat
30Sun12:119.912:409.56:22-1.36:40-0.75:316:10Waxing Crescent30Sun
31Mon12:579.81:309.07:12-1.17:27-0.35:296:12Waxing Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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Common Questions About Seavey Island, NH Tides

Collapse All
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 58% 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 First Quarter (58% 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

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