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 5h 27m 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 - Jul 2046

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:017.210:058.83:490.83:441.55:078:26Waning Crescent1Sun
2Mon10:507.310:529.14:370.44:321.35:088:26New Moon2Mon
3Tue11:377.611:399.45:220.15:201.05:088:25New Moon3Tue
4Wed12:237.96:07-0.26:080.75:098:25New Moon4Wed
5Thu12:269.51:108.26:52-0.56:570.55:098:25New Moon5Thu
6Fri1:159.61:578.57:37-0.67:470.35:108:24Waxing Crescent6Fri
7Sat2:059.62:458.88:24-0.78:400.25:118:24Waxing Crescent7Sat
8Sun2:569.43:369.09:13-0.69:360.15:128:24Waxing Crescent8Sun
9Mon3:519.14:289.210:04-0.410:360.15:128:23First Quarter9Mon
10Tue4:498.85:239.310:58-0.211:370.15:138:23First Quarter10Tue
11Wed5:518.46:219.311:540.15:148:22First Quarter11Wed
12Thu6:558.17:219.312:410.112:540.45:158:22Waxing Gibbous12Thu
13Fri8:027.98:229.31:470.11:550.75:158:21Waxing Gibbous13Fri
14Sat9:077.89:229.42:510.02:570.85:168:21Waxing Gibbous14Sat
15Sun10:087.810:189.43:51-0.13:550.85:178:20Waxing Gibbous15Sun
16Mon11:037.911:109.44:46-0.34:480.85:188:19Full Moon16Mon
17Tue11:538.011:579.45:36-0.35:380.75:198:19Full Moon17Tue
18Wed12:388.06:22-0.36:240.85:208:18Full Moon18Wed
19Thu12:419.21:208.07:03-0.17:070.85:218:17Full Moon19Thu
20Fri1:239.01:598.07:420.07:490.95:228:16Waning Gibbous20Fri
21Sat2:028.82:368.08:190.38:301.05:238:15Waning Gibbous21Sat
22Sun2:418.53:128.08:550.59:111.15:238:14Waning Gibbous22Sun
23Mon3:218.23:508.09:310.89:541.25:248:14Waning Gibbous23Mon
24Tue4:047.84:308.010:101.010:401.35:258:13Third Quarter24Tue
25Wed4:507.55:128.010:511.311:291.35:268:12Third Quarter25Wed
26Thu5:397.25:588.011:351.55:278:11Third Quarter26Thu
27Fri6:327.06:498.112:221.412:241.75:288:10Third Quarter27Fri
28Sat7:296.87:438.21:181.31:171.85:298:08Waning Crescent28Sat
29Sun8:296.98:398.52:161.12:141.75:308:07Waning Crescent29Sun
30Mon9:267.19:338.83:130.83:101.45:328:06Waning Crescent30Mon
31Tue10:187.410:259.24:050.44:041.05:338:05Waning Crescent31Tue
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