Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

66°
H 80°
L 59°
SW
2mph
High tide
9:36 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 3:23 pm (1.7 ft)
Next high tide : in 5h 55m at 9:36 am (7.0 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 - Nov 1929

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:009.511:308.74:430.05:14-0.66:174:35New Moon1Fri
2Sat11:399.45:240.25:56-0.56:184:34New Moon2Sat
3Sun12:128.512:179.26:030.56:37-0.36:194:33Waxing Crescent3Sun
4Mon12:538.112:558.96:420.97:180.06:214:31Waxing Crescent4Mon
5Tue1:347.81:338.67:211.27:590.46:224:30Waxing Crescent5Tue
6Wed2:167.52:158.48:021.58:430.76:234:29Waxing Crescent6Wed
7Thu3:017.33:018.18:471.89:300.96:254:28First Quarter7Thu
8Fri3:507.13:517.99:362.010:201.16:264:27First Quarter8Fri
9Sat4:417.04:447.810:292.011:111.26:274:26First Quarter9Sat
10Sun5:337.15:407.711:252.06:284:24First Quarter10Sun
11Mon6:257.36:367.712:031.212:221.76:304:23Waxing Gibbous11Mon
12Tue7:157.67:317.912:531.11:181.46:314:22Waxing Gibbous12Tue
13Wed8:018.18:228.01:410.92:100.96:324:21Waxing Gibbous13Wed
14Thu8:448.69:118.22:270.72:580.36:344:20Waxing Gibbous14Thu
15Fri9:269.19:578.43:100.53:45-0.26:354:19Full Moon15Fri
16Sat10:089.510:448.53:530.34:31-0.66:364:18Full Moon16Sat
17Sun10:539.811:328.54:370.15:18-0.96:374:18Full Moon17Sun
18Mon11:399.95:240.16:06-1.06:394:17Waning Gibbous18Mon
19Tue12:228.412:299.96:130.26:57-0.96:404:16Waning Gibbous19Tue
20Wed1:158.31:239.77:050.37:52-0.76:414:15Waning Gibbous20Wed
21Thu2:138.22:219.58:010.58:51-0.56:424:14Waning Gibbous21Thu
22Fri3:148.03:259.19:040.89:53-0.26:444:14Third Quarter22Fri
23Sat4:198.04:338.810:120.910:570.06:454:13Third Quarter23Sat
24Sun5:258.15:428.611:210.96:464:12Third Quarter24Sun
25Mon6:288.36:498.512:010.112:300.76:474:12Waning Crescent25Mon
26Tue7:288.67:538.41:020.21:360.46:484:11Waning Crescent26Tue
27Wed8:228.98:508.41:590.22:340.16:504:11Waning Crescent27Wed
28Thu9:119.19:418.42:500.33:26-0.26:514:10Waning Crescent28Thu
29Fri9:559.210:288.33:360.44:13-0.46:524:10New Moon29Fri
30Sat10:369.211:118.14:190.54:56-0.46:534:09New Moon30Sat
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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