Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide (tomorrow) : in 3h 16m at 1:20 am (0.9 ft)
Next high tide (tomorrow) : 7:30 am (7.2 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:23 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jan 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:368.48:167.31:121.22:030.57:144:18Waning Crescent1Sun
2Mon8:288.89:097.62:061.02:550.17:144:19Waning Crescent2Mon
3Tue9:189.29:597.92:580.63:45-0.47:144:20New Moon3Tue
4Wed10:089.610:488.33:490.24:33-0.87:144:21New Moon4Wed
5Thu10:579.911:378.64:39-0.15:20-1.27:144:22New Moon5Thu
6Fri11:4810.05:30-0.46:08-1.47:144:23New Moon6Fri
7Sat12:278.912:3910.06:22-0.66:57-1.47:134:24Waxing Crescent7Sat
8Sun1:179.11:329.87:15-0.77:48-1.37:134:25Waxing Crescent8Sun
9Mon2:099.22:279.48:11-0.68:40-1.07:134:26Waxing Crescent9Mon
10Tue3:049.23:269.09:10-0.49:36-0.67:134:27First Quarter10Tue
11Wed4:029.14:298.510:13-0.210:34-0.27:124:28First Quarter11Wed
12Thu5:019.05:348.111:18-0.111:350.27:124:29First Quarter12Thu
13Fri6:038.96:417.812:240.07:124:30Waxing Gibbous13Fri
14Sat7:078.97:477.712:380.41:300.07:114:31Waxing Gibbous14Sat
15Sun8:078.98:477.71:400.62:31-0.17:114:33Waxing Gibbous15Sun
16Mon9:029.09:407.82:380.63:25-0.27:104:34Waxing Gibbous16Mon
17Tue9:519.010:277.93:300.54:13-0.37:104:35Full Moon17Tue
18Wed10:369.011:107.94:160.54:55-0.37:094:36Full Moon18Wed
19Thu11:169.011:488.04:590.55:34-0.37:094:38Full Moon19Thu
20Fri11:538.85:380.56:10-0.27:084:39Full Moon20Fri
21Sat12:238.012:298.76:150.56:440.07:074:40Waning Gibbous21Sat
22Sun12:588.01:048.56:520.67:170.17:064:41Waning Gibbous22Sun
23Mon1:328.01:418.37:290.67:510.37:064:43Waning Gibbous23Mon
24Tue2:078.02:218.08:090.78:280.57:054:44Waning Gibbous24Tue
25Wed2:457.93:037.78:510.89:070.77:044:45Third Quarter25Wed
26Thu3:267.93:507.49:370.99:510.97:034:47Third Quarter26Thu
27Fri4:127.94:417.110:281.010:391.17:024:48Third Quarter27Fri
28Sat5:028.05:377.011:240.911:331.27:014:49Third Quarter28Sat
29Sun5:578.16:397.012:250.87:004:50Waning Crescent29Sun
30Mon6:568.47:417.212:321.11:260.56:594:52Waning Crescent30Mon
31Tue7:568.78:397.61:330.92:240.06:584:53Waning Crescent31Tue
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 4:25 am — 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 transitional phase. Tonight's moon is 62% 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 shifting between spring and neap.

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 (62% illuminated). This places Seavey Island, NH in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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