Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 7:06 am (0.3 ft)
Next high tide (tomorrow) : in 48m at 12:40 am (8.8 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:06 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Nov 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:008.27:218.712:370.31:040.76:174:35Waxing Gibbous1Wed
2Thu7:578.88:228.91:360.02:070.06:184:34Waxing Gibbous2Thu
3Fri8:509.49:199.22:31-0.23:04-0.66:204:32Waxing Gibbous3Fri
4Sat9:409.910:139.33:22-0.53:58-1.16:214:31Full Moon4Sat
5Sun10:3010.311:079.24:12-0.54:50-1.46:224:30Full Moon5Sun
6Mon11:1910.311:599.05:02-0.55:42-1.56:244:29Full Moon6Mon
7Tue12:0810.25:51-0.26:33-1.36:254:27Waning Gibbous7Tue
8Wed12:518.712:599.96:410.17:25-0.96:264:26Waning Gibbous8Wed
9Thu1:448.41:519.57:320.58:18-0.46:274:25Waning Gibbous9Thu
10Fri2:388.02:459.08:251.09:140.16:294:24Waning Gibbous10Fri
11Sat3:357.63:428.59:231.310:110.56:304:23Third Quarter11Sat
12Sun4:327.44:418.110:231.611:080.96:314:22Third Quarter12Sun
13Mon5:287.45:397.811:241.76:334:21Third Quarter13Mon
14Tue6:237.46:377.612:031.112:241.76:344:20Third Quarter14Tue
15Wed7:147.67:327.512:551.21:211.56:354:19Waning Crescent15Wed
16Thu8:007.88:227.61:421.22:121.26:364:18Waning Crescent16Thu
17Fri8:418.19:077.62:261.22:570.96:384:17Waning Crescent17Fri
18Sat9:198.39:497.63:051.23:380.66:394:16Waning Crescent18Sat
19Sun9:558.510:307.73:421.24:170.46:404:16New Moon19Sun
20Mon10:318.711:097.64:181.24:550.26:414:15New Moon20Mon
21Tue11:078.811:487.64:541.25:330.16:434:14New Moon21Tue
22Wed11:458.95:311.26:120.16:444:13New Moon22Wed
23Thu12:297.512:268.96:101.26:530.16:454:13Waxing Crescent23Thu
24Fri1:117.41:098.86:531.27:370.16:464:12Waxing Crescent24Fri
25Sat1:567.41:578.87:411.28:250.26:474:11Waxing Crescent25Sat
26Sun2:467.52:508.68:341.29:180.26:494:11First Quarter26Sun
27Mon3:417.63:498.59:331.210:140.26:504:10First Quarter27Mon
28Tue4:387.94:528.410:371.011:110.26:514:10First Quarter28Tue
29Wed5:378.25:578.311:420.86:524:10First Quarter29Wed
30Thu6:368.67:028.312:100.212:480.36:534:09Waxing Gibbous30Thu
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 3:53 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 100% 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 Full Moon (100% 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