Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 15m at 9:32 am (0.4 ft)
Next high tide : 3:53 pm (8.1 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:09 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jan 2048

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:068.811:437.64:500.95:290.07:144:18Full Moon1Wed
2Thu11:438.95:270.86:04-0.17:144:19Full Moon2Thu
3Fri12:197.812:218.96:060.76:40-0.27:144:20Waning Gibbous3Fri
4Sat12:567.91:018.86:460.67:17-0.27:144:21Waning Gibbous4Sat
5Sun1:348.01:428.77:290.57:57-0.17:144:22Waning Gibbous5Sun
6Mon2:158.22:288.48:150.58:400.07:144:23Waning Gibbous6Mon
7Tue3:008.43:188.29:070.49:290.17:144:24Third Quarter7Tue
8Wed3:508.54:147.910:030.410:220.37:134:25Third Quarter8Wed
9Thu4:448.65:167.711:050.311:200.47:134:26Third Quarter9Thu
10Fri5:448.86:237.612:100.27:134:27Waning Crescent10Fri
11Sat6:489.07:337.612:230.51:18-0.17:134:28Waning Crescent11Sat
12Sun7:539.38:407.91:280.42:23-0.57:124:29Waning Crescent12Sun
13Mon8:559.69:408.22:320.23:23-0.97:124:30Waning Crescent13Mon
14Tue9:539.910:378.53:31-0.14:19-1.27:114:31New Moon14Tue
15Wed10:4810.111:298.84:27-0.45:11-1.47:114:33New Moon15Wed
16Thu11:4110.15:21-0.56:00-1.47:104:34New Moon16Thu
17Fri12:198.912:319.96:12-0.66:48-1.27:104:35Waxing Crescent17Fri
18Sat1:078.91:209.57:03-0.47:34-0.97:094:36Waxing Crescent18Sat
19Sun1:548.82:099.07:53-0.28:20-0.47:094:37Waxing Crescent19Sun
20Mon2:408.62:578.58:440.19:060.17:084:39Waxing Crescent20Mon
21Tue3:268.43:477.99:360.49:530.67:074:40First Quarter21Tue
22Wed4:148.24:397.410:290.710:411.07:074:41First Quarter22Wed
23Thu5:038.05:337.011:251.011:321.37:064:42First Quarter23Thu
24Fri5:547.86:316.812:221.17:054:44First Quarter24Fri
25Sat6:487.87:296.712:251.51:191.17:044:45Waxing Gibbous25Sat
26Sun7:427.98:236.81:201.62:130.97:034:46Waxing Gibbous26Sun
27Mon8:328.19:127.02:121.53:020.77:024:48Waxing Gibbous27Mon
28Tue9:188.39:557.32:591.33:440.47:024:49Waxing Gibbous28Tue
29Wed10:008.610:367.53:431.04:230.17:014:50Full Moon29Wed
30Thu10:418.811:147.84:230.75:00-0.17:004:52Full Moon30Thu
31Fri11:208.911:518.15:040.45:36-0.36:594:53Full Moon31Fri
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 12:42 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 72% 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 Waning Gibbous (72% 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