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 45m at 7:41 pm (1.3 ft)
Next high tide (tomorrow) : 1:55 am (8.7 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 - Feb 2045

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:2510.011:068.74:04-0.24:49-1.36:574:55Full Moon1Wed
2Thu11:2010.211:589.15:00-0.75:40-1.66:564:57Full Moon2Thu
3Fri12:1310.25:54-0.96:29-1.66:544:58Waning Gibbous3Fri
4Sat12:479.31:059.96:47-1.07:17-1.36:534:59Waning Gibbous4Sat
5Sun1:379.41:589.57:40-0.98:06-0.96:525:01Waning Gibbous5Sun
6Mon2:269.32:528.98:35-0.68:56-0.46:515:02Waning Gibbous6Mon
7Tue3:189.13:478.29:32-0.39:480.26:505:03Third Quarter7Tue
8Wed4:118.74:467.610:310.110:430.86:485:05Third Quarter8Wed
9Thu5:068.45:477.211:330.511:411.26:475:06Third Quarter9Thu
10Fri6:058.16:516.912:360.86:465:07Third Quarter10Fri
11Sat7:068.07:526.812:411.51:390.86:445:09Waning Crescent11Sat
12Sun8:048.08:476.91:411.52:350.86:435:10Waning Crescent12Sun
13Mon8:558.19:347.12:351.43:230.66:425:11Waning Crescent13Mon
14Tue9:408.210:157.33:231.34:050.56:405:13Waning Crescent14Tue
15Wed10:208.410:537.54:041.04:410.36:395:14New Moon15Wed
16Thu10:588.511:277.74:430.85:140.26:375:15New Moon16Thu
17Fri11:338.511:597.95:190.65:460.26:365:17New Moon17Fri
18Sat12:088.55:550.56:170.26:345:18New Moon18Sat
19Sun12:318.112:448.36:300.46:490.26:335:19Waxing Crescent19Sun
20Mon1:038.21:218.27:070.37:230.36:315:21Waxing Crescent20Mon
21Tue1:378.32:017.97:470.38:000.56:305:22Waxing Crescent21Tue
22Wed2:168.42:457.68:320.38:420.76:285:23Waxing Crescent22Wed
23Thu2:598.43:357.39:220.49:310.96:275:24First Quarter23Thu
24Fri3:508.44:327.110:190.510:281.16:255:26First Quarter24Fri
25Sat4:498.35:386.911:230.511:321.26:245:27First Quarter25Sat
26Sun5:568.46:497.012:320.46:225:28Waxing Gibbous26Sun
27Mon7:078.67:597.412:411.01:410.16:205:29Waxing Gibbous27Mon
28Tue8:159.09:018.01:510.62:43-0.46:195:31Waxing Gibbous28Tue
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 10:48 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 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