Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 26m at 10:14 am (0.5 ft)
Next high tide : 4:36 pm (8.3 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:10 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Oct 2049

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:328.12:429.08:260.69:030.06:406:23Waxing Crescent1Fri
2Sat3:197.93:319.09:140.79:560.26:426:21First Quarter2Sat
3Sun4:137.84:278.910:080.910:540.36:436:20First Quarter3Sun
4Mon5:137.75:298.811:090.911:560.36:446:18First Quarter4Mon
5Tue6:177.86:368.812:150.96:456:16First Quarter5Tue
6Wed7:238.17:448.91:010.21:230.76:466:14Waxing Gibbous6Wed
7Thu8:288.58:509.12:050.02:300.36:476:13Waxing Gibbous7Thu
8Fri9:279.09:519.43:05-0.33:32-0.26:496:11Waxing Gibbous8Fri
9Sat10:209.510:469.54:01-0.54:29-0.76:506:09Full Moon9Sat
10Sun11:109.811:399.64:52-0.75:21-1.16:516:08Full Moon10Sun
11Mon11:5810.05:40-0.76:12-1.26:526:06Full Moon11Mon
12Tue12:299.412:4510.06:27-0.57:00-1.16:536:04Full Moon12Tue
13Wed1:189.21:309.87:13-0.27:48-0.86:546:03Waning Gibbous13Wed
14Thu2:058.82:169.57:590.28:35-0.56:566:01Waning Gibbous14Thu
15Fri2:528.43:029.18:450.69:240.06:575:59Waning Gibbous15Fri
16Sat3:418.03:498.79:321.010:140.46:585:58Waning Gibbous16Sat
17Sun4:317.64:408.310:231.411:060.86:595:56Third Quarter17Sun
18Mon5:237.45:338.011:171.611:591.17:005:54Third Quarter18Mon
19Tue6:167.36:277.812:121.87:025:53Third Quarter19Tue
20Wed7:097.37:237.712:521.21:091.77:035:51Third Quarter20Wed
21Thu8:017.58:187.81:441.32:041.57:045:50Waning Crescent21Thu
22Fri8:497.89:097.92:331.22:561.37:055:48Waning Crescent22Fri
23Sat9:338.19:568.03:181.13:430.97:075:47Waning Crescent23Sat
24Sun10:148.410:398.13:590.94:260.57:085:45Waning Crescent24Sun
25Mon10:528.711:218.24:380.75:070.27:095:44New Moon25Mon
26Tue11:309.05:160.65:48-0.17:105:42New Moon26Tue
27Wed12:028.312:099.25:550.56:29-0.37:125:41New Moon27Wed
28Thu12:448.312:509.46:350.47:12-0.47:135:39Waxing Crescent28Thu
29Fri1:288.31:359.47:190.47:58-0.47:145:38Waxing Crescent29Fri
30Sat2:158.22:239.48:060.58:47-0.37:155:37Waxing Crescent30Sat
31Sun3:068.13:159.28:580.69:41-0.27:175:35Waxing Crescent31Sun
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 1:25 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 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 Third 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