Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 9:32 am (0.4 ft)
Next high tide : in 33m at 3:17 am (8.5 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 2000

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:298.48:007.61:060.71:480.67:144:18Waning Crescent1Sat
2Sun8:198.48:517.51:580.92:400.47:144:19Waning Crescent2Sun
3Mon9:048.59:377.62:450.93:260.37:144:19Waning Crescent3Mon
4Tue9:448.610:197.63:280.94:070.17:144:20New Moon4Tue
5Wed10:228.710:587.64:070.94:460.07:144:21New Moon5Wed
6Thu10:598.811:357.74:440.95:220.07:144:22New Moon6Thu
7Fri11:358.85:210.85:57-0.17:144:23New Moon7Fri
8Sat12:127.712:118.85:570.86:31-0.17:144:24New Moon8Sat
9Sun12:487.712:488.76:340.87:07-0.17:134:25Waxing Crescent9Sun
10Mon1:247.71:278.67:120.87:440.07:134:26Waxing Crescent10Mon
11Tue2:027.82:088.57:540.88:240.17:134:28Waxing Crescent11Tue
12Wed2:437.92:538.38:410.89:080.27:124:29Waxing Crescent12Wed
13Thu3:288.03:448.19:320.79:560.37:124:30First Quarter13Thu
14Fri4:178.24:397.910:280.610:490.47:124:31First Quarter14Fri
15Sat5:118.45:407.711:290.511:470.47:114:32First Quarter15Sat
16Sun6:108.66:467.712:330.27:114:33Waxing Gibbous16Sun
17Mon7:119.07:537.912:480.41:38-0.27:104:35Waxing Gibbous17Mon
18Tue8:139.48:568.21:500.22:41-0.77:104:36Waxing Gibbous18Tue
19Wed9:129.89:558.52:51-0.13:39-1.17:094:37Full Moon19Wed
20Thu10:0910.110:528.83:48-0.44:34-1.57:084:38Full Moon20Thu
21Fri11:0410.311:469.04:44-0.65:27-1.77:084:40Full Moon21Fri
22Sat11:5810.35:38-0.76:19-1.77:074:41Full Moon22Sat
23Sun12:389.012:5110.16:32-0.77:10-1.57:064:42Waning Gibbous23Sun
24Mon1:309.01:449.77:25-0.58:00-1.17:054:43Waning Gibbous24Mon
25Tue2:218.92:379.28:19-0.38:51-0.67:054:45Waning Gibbous25Tue
26Wed3:128.73:318.69:150.19:42-0.17:044:46Third Quarter26Wed
27Thu4:048.44:268.110:120.410:340.47:034:47Third Quarter27Thu
28Fri4:578.25:237.611:100.611:280.87:024:49Third Quarter28Fri
29Sat5:508.16:217.312:100.87:014:50Third Quarter29Sat
30Sun6:448.07:207.112:221.11:080.97:004:51Waning Crescent30Sun
31Mon7:378.08:157.11:161.32:040.86:594:53Waning Crescent31Mon
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 6:24 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 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