Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

71°
H 79°
L 59°
SW
5mph
Low tide
3:23 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, August 24, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 4h 29m at 3:23 pm (1.7 ft)
Next high tide : 9:41 pm (8.3 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 5:58 am
Moon phase : Waxing Gibbous (88% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Feb 1929

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri4:408.15:087.310:570.811:091.16:584:54Third Quarter1Fri
2Sat5:307.96:057.011:541.06:574:56Third Quarter2Sat
3Sun6:237.87:036.812:021.412:521.06:564:57Waning Crescent3Sun
4Mon7:177.88:006.712:561.61:491.06:554:58Waning Crescent4Mon
5Tue8:097.98:526.91:501.62:410.86:535:00Waning Crescent5Tue
6Wed8:578.19:387.02:391.53:270.66:525:01Waning Crescent6Wed
7Thu9:418.310:207.23:241.34:080.36:515:02Waning Crescent7Thu
8Fri10:228.610:597.54:061.14:460.16:505:04New Moon8Fri
9Sat11:018.711:367.74:450.85:22-0.16:485:05New Moon9Sat
10Sun11:408.85:240.65:57-0.26:475:06New Moon10Sun
11Mon12:127.912:188.96:030.46:32-0.36:465:08Waxing Crescent11Mon
12Tue12:488.112:588.86:430.27:09-0.36:455:09Waxing Crescent12Tue
13Wed1:258.31:408.67:260.17:49-0.26:435:10Waxing Crescent13Wed
14Thu2:058.52:268.48:130.08:320.06:425:12Waxing Crescent14Thu
15Fri2:508.63:178.09:040.19:210.26:405:13First Quarter15Fri
16Sat3:408.64:147.710:010.210:160.56:395:14First Quarter16Sat
17Sun4:378.65:187.411:040.211:170.86:375:16First Quarter17Sun
18Mon5:408.66:297.312:130.26:365:17First Quarter18Mon
19Tue6:498.77:427.412:240.91:230.06:355:18Waxing Gibbous19Tue
20Wed7:598.98:497.71:340.72:30-0.36:335:20Waxing Gibbous20Wed
21Thu9:039.39:488.12:390.43:30-0.76:325:21Waxing Gibbous21Thu
22Fri10:019.610:428.53:390.04:23-1.06:305:22Full Moon22Fri
23Sat10:559.811:318.84:34-0.35:13-1.16:285:23Full Moon23Sat
24Sun11:459.75:25-0.55:59-1.16:275:25Full Moon24Sun
25Mon12:168.912:329.56:13-0.66:43-0.96:255:26Waning Gibbous25Mon
26Tue1:008.91:179.27:00-0.57:25-0.56:245:27Waning Gibbous26Tue
27Wed1:418.82:028.77:46-0.38:070.06:225:29Waning Gibbous27Wed
28Thu2:238.62:478.18:330.18:490.56:205:30Waning Gibbous28Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

Common Questions About Seavey Island, NH Tides

Collapse All
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 Waxing 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

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