Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

46°
H 63°
L 46°
NNE
6mph
High tide
9:41 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 3:35 pm (1.3 ft)
Next high tide : in 5h 18m at 9:41 am (7.5 ft)
Sunset today : 6:38 pm
Sunrise tomorrow : 6:31 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Sep 1867

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:469.71:129.46:54-0.77:18-0.55:106:22Waxing Crescent1Sun
2Mon1:359.31:599.27:40-0.38:08-0.15:116:21Waxing Crescent2Mon
3Tue2:258.82:478.98:270.29:000.25:126:19Waxing Crescent3Tue
4Wed3:168.33:378.69:160.79:540.65:136:17First Quarter4Wed
5Thu4:107.84:288.310:081.110:500.95:156:15First Quarter5Thu
6Fri5:067.55:238.111:021.411:481.15:166:14First Quarter6Fri
7Sat6:047.26:208.011:581.65:176:12First Quarter7Sat
8Sun7:027.27:178.012:461.212:551.75:186:10Waxing Gibbous8Sun
9Mon7:577.38:098.21:421.11:501.55:196:08Waxing Gibbous9Mon
10Tue8:467.68:578.42:310.92:391.35:206:07Waxing Gibbous10Tue
11Wed9:307.89:408.63:150.73:241.05:216:05Waxing Gibbous11Wed
12Thu10:098.110:218.83:550.44:050.75:226:03Full Moon12Thu
13Fri10:478.411:008.94:320.24:440.45:236:01Full Moon13Fri
14Sat11:238.711:399.05:080.15:230.15:245:59Full Moon14Sat
15Sun12:008.95:440.06:03-0.15:265:58Full Moon15Sun
16Mon12:199.012:379.16:22-0.16:45-0.25:275:56Waning Gibbous16Mon
17Tue1:018.91:189.27:02-0.17:30-0.35:285:54Waning Gibbous17Tue
18Wed1:468.72:039.37:460.08:19-0.25:295:52Waning Gibbous18Wed
19Thu2:358.52:529.28:350.29:13-0.15:305:50Third Quarter19Thu
20Fri3:308.33:489.19:290.410:120.05:315:49Third Quarter20Fri
21Sat4:308.14:499.110:280.611:150.15:325:47Third Quarter21Sat
22Sun5:358.05:559.011:320.65:335:45Third Quarter22Sun
23Mon6:428.17:029.112:200.112:390.55:345:43Waning Crescent23Mon
24Tue7:478.48:079.31:25-0.11:450.35:355:41Waning Crescent24Tue
25Wed8:468.89:069.52:25-0.32:46-0.15:375:40Waning Crescent25Wed
26Thu9:399.110:019.63:20-0.53:41-0.45:385:38New Moon26Thu
27Fri10:299.410:529.64:11-0.74:33-0.65:395:36New Moon27Fri
28Sat11:169.511:409.54:58-0.65:22-0.75:405:34New Moon28Sat
29Sun12:009.55:43-0.56:08-0.65:415:32New Moon29Sun
30Mon12:269.212:439.46:26-0.26:54-0.45:425:31Waxing Crescent30Mon
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 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

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