Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 19m at 1:24 pm (1.5 ft)
Next high tide : 7:47 pm (8.3 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:24 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Dec 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:348.23:488.69:340.710:050.06:554:08First Quarter1Sat
2Sun4:298.44:498.410:350.611:030.16:564:08First Quarter2Sun
3Mon5:288.75:538.311:400.46:574:08First Quarter3Mon
4Tue6:289.07:008.312:020.112:450.06:584:08Waxing Gibbous4Tue
5Wed7:289.38:048.51:030.01:49-0.46:594:08Waxing Gibbous5Wed
6Thu8:269.79:048.62:03-0.12:49-0.87:004:07Waxing Gibbous6Thu
7Fri9:2110.010:018.83:00-0.23:45-1.17:014:07Full Moon7Fri
8Sat10:1410.210:558.83:54-0.34:38-1.37:024:07Full Moon8Sat
9Sun11:0510.211:468.84:46-0.35:28-1.37:034:07Full Moon9Sun
10Mon11:5510.05:36-0.26:17-1.27:044:07Full Moon10Mon
11Tue12:358.712:439.76:250.07:04-0.97:044:08Waning Gibbous11Tue
12Wed1:238.51:319.37:140.37:51-0.57:054:08Waning Gibbous12Wed
13Thu2:108.32:188.98:030.68:38-0.17:064:08Waning Gibbous13Thu
14Fri2:578.13:078.48:530.99:250.47:074:08Third Quarter14Fri
15Sat3:457.93:577.99:461.110:120.77:074:08Third Quarter15Sat
16Sun4:337.84:497.510:391.311:001.17:084:09Third Quarter16Sun
17Mon5:217.75:437.311:341.411:491.37:094:09Third Quarter17Mon
18Tue6:117.86:387.112:301.37:094:09Waning Crescent18Tue
19Wed7:017.97:347.112:401.41:251.27:104:10Waning Crescent19Wed
20Thu7:518.18:277.11:301.42:160.97:104:10Waning Crescent20Thu
21Fri8:378.39:157.32:181.33:030.67:114:11Waning Crescent21Fri
22Sat9:218.69:597.53:031.23:460.37:114:11New Moon22Sat
23Sun10:038.810:427.73:461.04:280.07:124:12New Moon23Sun
24Mon10:459.111:247.84:270.75:08-0.37:124:13New Moon24Mon
25Tue11:279.25:100.55:48-0.57:134:13New Moon25Tue
26Wed12:068.012:109.35:540.36:30-0.67:134:14Waxing Crescent26Wed
27Thu12:488.212:559.36:400.27:14-0.77:134:15Waxing Crescent27Thu
28Fri1:338.41:439.27:280.18:00-0.67:134:15Waxing Crescent28Fri
29Sat2:218.62:358.98:210.18:50-0.57:134:16Waxing Crescent29Sat
30Sun3:128.73:328.69:180.19:43-0.37:144:17First Quarter30Sun
31Mon4:088.84:328.310:190.17:144:18First Quarter31Mon
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 4:35 pm — 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 71% 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 Gibbous (71% 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