Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

63°
H -°
L 47°
NW
12mph
Low tide
8:35 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, September 14, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 44m at 8:35 pm (-0.1 ft)
Next high tide (tomorrow) : 2:50 am (8.4 ft)
Sunset today : 6:55 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Mar 1881

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:469.85:28-1.25:54-1.26:225:36New Moon1Tue
2Wed12:129.612:369.66:18-1.26:40-1.06:205:37Waxing Crescent2Wed
3Thu12:589.61:249.27:07-1.07:25-0.66:185:38Waxing Crescent3Thu
4Fri1:449.42:138.67:56-0.78:12-0.16:175:40Waxing Crescent4Fri
5Sat2:319.03:048.18:48-0.29:000.56:155:41Waxing Crescent5Sat
6Sun3:208.63:587.59:410.39:521.06:135:42First Quarter6Sun
7Mon4:138.24:557.110:380.710:481.46:125:43First Quarter7Mon
8Tue5:107.95:556.911:381.011:471.66:105:45First Quarter8Tue
9Wed6:107.76:566.812:401.16:085:46First Quarter9Wed
10Thu7:117.77:546.912:481.71:381.16:065:47Waxing Gibbous10Thu
11Fri8:077.88:447.21:461.52:300.96:055:48Waxing Gibbous11Fri
12Sat8:568.09:277.52:381.33:140.76:035:49Waxing Gibbous12Sat
13Sun9:408.210:067.93:230.93:520.56:015:51Waxing Gibbous13Sun
14Mon10:208.410:428.24:040.64:280.35:595:52Full Moon14Mon
15Tue10:588.511:178.54:430.35:020.25:585:53Full Moon15Tue
16Wed11:368.511:518.75:200.05:360.15:565:54Full Moon16Wed
17Thu12:148.55:58-0.26:120.05:545:55Full Moon17Thu
18Fri12:268.912:538.46:38-0.36:500.15:525:56Waning Gibbous18Fri
19Sat1:049.01:358.37:20-0.47:310.25:515:58Waning Gibbous19Sat
20Sun1:469.12:218.18:06-0.38:170.35:495:59Waning Gibbous20Sun
21Mon2:349.03:137.88:57-0.29:090.55:476:00Third Quarter21Mon
22Tue3:278.94:127.69:550.010:080.75:456:01Third Quarter22Tue
23Wed4:288.85:167.610:570.111:120.85:436:02Third Quarter23Wed
24Thu5:348.76:247.712:030.15:426:04Third Quarter24Thu
25Fri6:448.87:318.012:210.71:090.05:406:05Waning Crescent25Fri
26Sat7:528.98:318.51:290.42:10-0.25:386:06Waning Crescent26Sat
27Sun8:539.29:259.02:33-0.13:06-0.55:366:07Waning Crescent27Sun
28Mon9:499.310:159.43:30-0.53:57-0.75:356:08New Moon28Mon
29Tue10:419.411:029.64:23-0.94:44-0.75:336:09New Moon29Tue
30Wed11:309.311:479.75:12-1.15:30-0.65:316:11New Moon30Wed
31Thu12:179.16:00-1.16:14-0.35:296:12New Moon31Thu
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 spring phase. Tonight's moon is 14% 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 Crescent (14% 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

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