Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 4h 32m at 8:21 pm (1.3 ft)
Next high tide (tomorrow) : 2:35 am (8.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:08 am
Moon phase : Waning Gibbous (88% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jun 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:248.55:127.710:510.511:051.65:068:15Third Quarter1Sat
2Sun5:178.16:037.611:420.85:058:16Third Quarter2Sun
3Mon6:117.86:547.612:011.712:321.15:058:16Third Quarter3Mon
4Tue7:067.67:437.712:571.71:221.35:048:17Third Quarter4Tue
5Wed8:017.58:317.91:531.62:101.45:048:18Waning Crescent5Wed
6Thu8:547.49:158.12:461.42:561.45:048:19Waning Crescent6Thu
7Fri9:437.59:578.43:341.03:391.45:038:19Waning Crescent7Fri
8Sat10:297.610:368.64:190.74:201.35:038:20Waning Crescent8Sat
9Sun11:137.711:158.95:000.45:001.25:038:20New Moon9Sun
10Mon11:567.711:559.05:410.25:391.25:038:21New Moon10Mon
11Tue12:387.86:210.06:201.15:028:22New Moon11Tue
12Wed12:369.21:217.87:03-0.27:041.05:028:22New Moon12Wed
13Thu1:209.32:067.97:46-0.27:500.95:028:23Waxing Crescent13Thu
14Fri2:069.32:538.08:32-0.38:390.95:028:23Waxing Crescent14Fri
15Sat2:559.23:438.19:21-0.39:330.95:028:24Waxing Crescent15Sat
16Sun3:499.14:378.310:13-0.210:320.85:028:24First Quarter16Sun
17Mon4:478.95:338.511:08-0.111:340.75:028:24First Quarter17Mon
18Tue5:488.76:318.812:05-0.15:028:25First Quarter18Tue
19Wed6:528.57:299.112:390.51:030.05:038:25First Quarter19Wed
20Thu7:588.58:289.41:440.22:030.15:038:25Waxing Gibbous20Thu
21Fri9:028.59:249.72:47-0.13:010.15:038:25Waxing Gibbous21Fri
22Sat10:028.510:189.93:47-0.53:570.25:038:26Waxing Gibbous22Sat
23Sun10:598.511:0910.04:42-0.84:490.25:038:26Full Moon23Sun
24Mon11:528.511:599.95:35-0.95:400.35:048:26Full Moon24Mon
25Tue12:438.46:25-0.96:290.45:048:26Full Moon25Tue
26Wed12:479.81:318.37:12-0.77:170.65:048:26Full Moon26Wed
27Thu1:349.52:188.17:58-0.48:030.95:058:26Waning Gibbous27Thu
28Fri2:199.23:038.08:43-0.18:501.15:058:26Waning Gibbous28Fri
29Sat3:048.83:477.89:280.29:381.35:068:26Waning Gibbous29Sat
30Sun3:508.44:327.810:120.510:271.55:068:26Third Quarter30Sun
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 11:28 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 88% 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 (88% 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