Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, July 26, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 39m at 4:01 am (0.8 ft)
Next high tide : 10:11 am (7.1 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:27 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Apr 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:458.38:287.71:231.12:070.56:237:09Waning Crescent1Sat
2Sun8:468.29:247.82:261.13:050.56:217:11Waning Crescent2Sun
3Mon9:408.310:128.03:230.93:550.56:197:12Waning Crescent3Mon
4Tue10:278.310:538.24:120.74:390.46:177:13Waning Crescent4Tue
5Wed11:098.411:308.34:560.55:170.46:167:14New Moon5Wed
6Thu11:478.45:340.35:520.46:147:15New Moon6Thu
7Fri12:058.512:238.46:110.26:240.46:127:16New Moon7Fri
8Sat12:378.512:598.36:450.16:570.56:117:18New Moon8Sat
9Sun1:098.61:348.27:200.17:290.66:097:19Waxing Crescent9Sun
10Mon1:428.62:118.17:550.18:040.76:077:20Waxing Crescent10Mon
11Tue2:178.62:497.98:320.18:410.96:057:21Waxing Crescent11Tue
12Wed2:558.53:317.79:130.29:231.06:047:22Waxing Crescent12Wed
13Thu3:378.54:187.69:590.310:111.16:027:23First Quarter13Thu
14Fri4:268.45:107.510:500.411:051.26:017:24First Quarter14Fri
15Sat5:218.46:077.611:470.45:597:26First Quarter15Sat
16Sun6:218.47:087.812:041.112:470.45:577:27First Quarter16Sun
17Mon7:268.58:108.21:090.91:490.25:567:28Waxing Gibbous17Mon
18Tue8:318.89:108.72:140.52:49-0.25:547:29Waxing Gibbous18Tue
19Wed9:339.210:059.33:16-0.13:46-0.55:527:30Waxing Gibbous19Wed
20Thu10:319.510:579.94:15-0.74:40-0.95:517:31Full Moon20Thu
21Fri11:269.711:4810.25:09-1.25:31-1.15:497:33Full Moon21Fri
22Sat12:209.86:03-1.66:22-1.15:487:34Full Moon22Sat
23Sun12:3910.41:149.76:55-1.77:12-0.95:467:35Full Moon23Sun
24Mon1:3010.42:079.47:47-1.68:03-0.65:457:36Waning Gibbous24Mon
25Tue2:2110.13:029.18:40-1.38:56-0.15:437:37Waning Gibbous25Tue
26Wed3:149.73:588.69:35-0.89:510.45:427:38Waning Gibbous26Wed
27Thu4:109.24:568.310:33-0.310:500.85:407:40Third Quarter27Thu
28Fri5:088.85:558.011:320.111:511.15:397:41Third Quarter28Fri
29Sat6:088.46:547.812:310.55:377:42Third Quarter29Sat
30Sun7:098.17:527.812:521.31:300.85:367:43Third 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 7:06 am — 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 92% 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 (92% 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