Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

63°
H 65°
L 46°
ENE
6mph
High tide
6:16 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 12:50 am (1.4 ft)
Next high tide : in 5h 54m at 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 - Feb 1873

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:529.22:109.67:51-0.78:22-1.07:014:59Waxing Crescent1Sat
2Sun2:449.13:069.08:48-0.59:15-0.57:005:01First Quarter2Sun
3Mon3:389.04:058.49:48-0.210:100.06:595:02First Quarter3Mon
4Tue4:348.85:087.910:510.111:070.56:585:03First Quarter4Tue
5Wed5:328.56:137.411:550.36:575:05First Quarter5Wed
6Thu6:348.37:197.212:071.01:010.56:565:06Waxing Gibbous6Thu
7Fri7:358.38:217.11:091.22:040.56:545:07Waxing Gibbous7Fri
8Sat8:328.39:167.22:081.33:000.46:535:09Waxing Gibbous8Sat
9Sun9:238.410:037.33:011.23:490.36:525:10Waxing Gibbous9Sun
10Mon10:088.510:457.43:481.14:320.26:515:11Full Moon10Mon
11Tue10:498.611:237.54:311.05:100.16:495:13Full Moon11Tue
12Wed11:268.611:587.75:100.85:450.16:485:14Full Moon12Wed
13Thu12:028.65:470.76:170.16:465:15Full Moon13Thu
14Fri12:317.812:378.56:220.76:490.26:455:17Waning Gibbous14Fri
15Sat1:047.91:128.36:580.67:210.36:445:18Waning Gibbous15Sat
16Sun1:368.01:498.17:360.67:540.46:425:19Waning Gibbous16Sun
17Mon2:118.02:287.88:150.68:310.66:415:20Waning Gibbous17Mon
18Tue2:488.13:127.58:590.79:130.86:395:22Third Quarter18Tue
19Wed3:308.14:017.39:480.79:591.06:385:23Third Quarter19Wed
20Thu4:198.14:567.010:430.710:531.16:365:24Third Quarter20Thu
21Fri5:138.25:596.911:440.711:521.26:355:26Third Quarter21Fri
22Sat6:158.47:067.012:490.56:335:27Waning Crescent22Sat
23Sun7:218.78:127.412:571.01:550.16:325:28Waning Crescent23Sun
24Mon8:259.19:117.82:020.72:55-0.46:305:30Waning Crescent24Mon
25Tue9:249.610:068.43:030.23:50-0.96:285:31New Moon25Tue
26Wed10:2010.010:588.94:00-0.44:42-1.36:275:32New Moon26Wed
27Thu11:1410.211:489.34:55-0.85:31-1.56:255:33New Moon27Thu
28Fri12:0710.15:48-1.16:19-1.56:245:35New Moon28Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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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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