Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 10:29 am (-0.4 ft)
Next high tide (tomorrow) : in 4h 18m at 4:10 am (9.3 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:03 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Dec 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:059.18:378.41:450.32:24-0.26:554:09Waning Crescent1Wed
2Thu8:569.69:328.72:380.03:19-0.76:564:08Waning Crescent2Thu
3Fri9:4610.110:268.83:29-0.24:11-1.26:574:08New Moon3Fri
4Sat10:3710.411:208.94:21-0.45:04-1.56:584:08New Moon4Sat
5Sun11:3010.55:12-0.45:57-1.66:594:08New Moon5Sun
6Mon12:158.812:2410.46:06-0.36:51-1.57:004:08Waxing Crescent6Mon
7Tue1:118.71:2010.17:01-0.17:47-1.27:014:08Waxing Crescent7Tue
8Wed2:098.52:199.77:580.28:45-0.87:014:07Waxing Crescent8Wed
9Thu3:098.33:209.29:000.59:45-0.47:024:07First Quarter9Thu
10Fri4:108.24:248.710:040.710:450.07:034:07First Quarter10Fri
11Sat5:118.25:288.311:100.911:440.37:044:08First Quarter11Sat
12Sun6:108.26:318.012:160.97:054:08First Quarter12Sun
13Mon7:078.37:317.812:420.61:180.87:064:08Waxing Gibbous13Mon
14Tue7:598.48:277.71:360.82:140.67:064:08Waxing Gibbous14Tue
15Wed8:458.59:167.72:250.93:040.47:074:08Waxing Gibbous15Wed
16Thu9:278.610:007.63:101.03:480.27:084:09Waxing Gibbous16Thu
17Fri10:068.710:407.63:501.04:290.17:094:09Full Moon17Fri
18Sat10:428.711:197.64:281.15:060.17:094:09Full Moon18Sat
19Sun11:178.711:567.65:041.15:420.17:104:10Full Moon19Sun
20Mon11:538.75:391.16:170.17:104:10Full Moon20Mon
21Tue12:337.512:298.76:151.26:530.17:114:11Waning Gibbous21Tue
22Wed1:107.51:078.66:521.27:300.27:114:11Waning Gibbous22Wed
23Thu1:497.41:478.57:321.28:090.27:124:12Waning Gibbous23Thu
24Fri2:297.52:318.48:161.28:510.37:124:12Waning Gibbous24Fri
25Sat3:127.63:188.29:051.29:370.47:124:13Third Quarter25Sat
26Sun3:597.84:108.09:581.110:260.47:134:14Third Quarter26Sun
27Mon4:488.05:077.910:550.911:180.47:134:14Third Quarter27Mon
28Tue5:418.36:087.811:560.67:134:15Third Quarter28Tue
29Wed6:378.77:117.912:140.412:590.27:144:16Waning Crescent29Wed
30Thu7:349.18:148.01:120.32:01-0.37:144:17Waning Crescent30Thu
31Fri8:319.69:158.12:110.13:00-0.87:144:17Waning Crescent31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

Common Questions About Seavey Island, NH Tides

Show All
What time does the tide turn (slack tide) in Seavey Island, NH today?

Slack tide in Seavey Island, NH is approximately 7:19 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 27% 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 Waxing Crescent (27% 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