Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, June 26, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 52m at 3:45 pm (1.4 ft)
Next high tide : 10:03 pm (8.6 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:05 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jul 2039

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:168.17:459.11:060.51:220.45:078:26Waxing Gibbous1Fri
2Sat8:208.18:439.52:080.22:210.35:078:26Waxing Gibbous2Sat
3Sun9:238.39:409.93:10-0.33:200.25:088:25Waxing Gibbous3Sun
4Mon10:248.410:3710.24:09-0.74:170.15:098:25Full Moon4Mon
5Tue11:238.611:3310.35:06-1.15:140.05:098:25Full Moon5Tue
6Wed12:208.76:02-1.36:10-0.15:108:25Full Moon6Wed
7Thu12:2910.41:168.86:56-1.37:05-0.15:118:24Full Moon7Thu
8Fri1:2510.22:118.87:49-1.28:000.15:118:24Waning Gibbous8Fri
9Sat2:2010.03:058.78:42-0.98:560.35:128:23Waning Gibbous9Sat
10Sun3:159.63:588.79:34-0.69:530.55:138:23Waning Gibbous10Sun
11Mon4:109.14:518.510:27-0.110:510.75:148:22Third Quarter11Mon
12Tue5:068.65:438.411:190.311:500.95:148:22Third Quarter12Tue
13Wed6:018.16:348.312:110.75:158:21Third Quarter13Wed
14Thu6:587.77:258.312:481.01:021.15:168:21Third Quarter14Thu
15Fri7:547.48:158.31:451.01:531.35:178:20Waning Crescent15Fri
16Sat8:497.39:048.32:401.02:431.55:188:19Waning Crescent16Sat
17Sun9:417.39:498.43:310.93:311.55:198:19Waning Crescent17Sun
18Mon10:287.310:328.64:180.74:151.55:198:18Waning Crescent18Mon
19Tue11:117.411:128.75:000.54:561.45:208:17New Moon19Tue
20Wed11:537.511:528.85:390.45:361.35:218:16New Moon20Wed
21Thu12:327.66:170.26:141.25:228:16New Moon21Thu
22Fri12:308.91:107.76:540.16:531.15:238:15New Moon22Fri
23Sat1:098.91:487.97:300.17:341.05:248:14Waxing Crescent23Sat
24Sun1:498.92:268.08:080.08:160.95:258:13Waxing Crescent24Sun
25Mon2:318.93:068.28:470.09:010.75:268:12Waxing Crescent25Mon
26Tue3:158.73:498.49:290.19:510.65:278:11Waxing Crescent26Tue
27Wed4:038.54:368.610:150.110:450.65:288:10First Quarter27Wed
28Thu4:568.35:278.811:050.311:430.55:298:09First Quarter28Thu
29Fri5:548.16:229.011:590.45:308:08First Quarter29Fri
30Sat6:567.97:219.212:450.312:580.55:318:07Waxing Gibbous30Sat
31Sun8:037.98:249.41:500.12:000.55:328:05Waxing Gibbous31Sun
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 6:54 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 spring phase. Tonight's moon is 90% 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 Waxing Gibbous (90% 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