Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Thursday, July 2, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 02m at 7:41 am (0.3 ft)
Next high tide : 1:59 pm (7.6 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:08 am
Moon phase : Waning Gibbous (94% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Dec 2004

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:007.31:568.37:431.58:230.66:554:09Waning Gibbous1Wed
2Thu2:427.22:408.28:261.79:060.76:564:08Waning Gibbous2Thu
3Fri3:267.23:288.09:131.79:510.86:574:08Third Quarter3Fri
4Sat4:137.24:187.810:041.710:380.96:584:08Third Quarter4Sat
5Sun5:017.45:127.710:591.611:271.06:594:08Third Quarter5Sun
6Mon5:507.76:087.611:561.37:004:08Third Quarter6Mon
7Tue6:408.07:067.712:180.912:540.97:014:08Waning Crescent7Tue
8Wed7:308.58:027.81:090.81:500.47:024:07Waning Crescent8Wed
9Thu8:209.08:568.02:010.62:44-0.17:034:07Waning Crescent9Thu
10Fri9:099.59:498.22:510.43:36-0.67:034:08New Moon10Fri
11Sat9:599.910:428.33:420.24:28-1.07:044:08New Moon11Sat
12Sun10:5010.111:368.44:330.05:19-1.27:054:08New Moon12Sun
13Mon11:4310.25:25-0.16:12-1.37:064:08Waxing Crescent13Mon
14Tue12:308.412:3810.16:19-0.17:06-1.27:074:08Waxing Crescent14Tue
15Wed1:268.41:359.87:150.18:02-1.07:074:08Waxing Crescent15Wed
16Thu2:258.42:359.58:150.39:00-0.77:084:09Waxing Crescent16Thu
17Fri3:258.33:389.09:180.410:00-0.37:094:09First Quarter17Fri
18Sat4:268.34:438.610:250.611:000.07:094:09First Quarter18Sat
19Sun5:278.45:488.211:320.611:590.37:104:10First Quarter19Sun
20Mon6:268.56:538.012:370.57:104:10Waxing Gibbous20Mon
21Tue7:238.67:547.812:570.61:400.47:114:11Waxing Gibbous21Tue
22Wed8:168.78:507.71:520.72:360.27:114:11Waxing Gibbous22Wed
23Thu9:038.89:397.72:430.83:260.07:124:12Waxing Gibbous23Thu
24Fri9:478.810:247.63:280.94:110.07:124:12Full Moon24Fri
25Sat10:278.811:057.64:101.04:51-0.17:134:13Full Moon25Sat
26Sun11:048.811:437.64:491.05:290.07:134:14Full Moon26Sun
27Mon11:408.75:261.16:050.07:134:14Full Moon27Mon
28Tue12:197.512:168.76:021.16:410.17:134:15Waning Gibbous28Tue
29Wed12:567.512:528.66:381.27:160.27:144:16Waning Gibbous29Wed
30Thu1:327.41:308.57:161.27:520.37:144:17Waning Gibbous30Thu
31Fri2:107.52:108.37:561.28:260.57:144:17Waning Gibbous31Fri
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 10:50 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 spring phase. Tonight's moon is 94% 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 Waning Gibbous (94% 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