Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

62°
H -°
L 53°
SSE
8mph
Low tide
9:20 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 48m at 9:20 pm (0.3 ft)
Next high tide (tomorrow) : 3:35 am (7.9 ft)
Sunset today : 6:53 pm
Sunrise tomorrow : 6:22 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Dec 1878

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:337.74:457.910:311.411:030.96:594:13First Quarter1Sun
2Mon5:277.75:437.511:311.511:551.27:004:13First Quarter2Mon
3Tue6:197.76:427.312:301.47:014:12First Quarter3Tue
4Wed7:097.87:387.212:461.41:271.27:024:12Waxing Gibbous4Wed
5Thu7:578.08:297.21:351.42:191.07:034:12Waxing Gibbous5Thu
6Fri8:408.29:167.32:211.53:050.87:044:12Waxing Gibbous6Fri
7Sat9:218.410:007.33:041.43:470.57:054:12Waxing Gibbous7Sat
8Sun10:018.610:427.43:441.44:270.37:064:12Full Moon8Sun
9Mon10:398.711:227.44:231.35:060.17:064:12Full Moon9Mon
10Tue11:188.95:021.25:450.07:074:12Full Moon10Tue
11Wed12:027.511:58 AM8.95:411.16:24-0.17:084:12Full Moon11Wed
12Thu12:427.612:399.06:231.07:04-0.17:094:12Waning Gibbous12Thu
13Fri1:237.71:239.07:070.97:47-0.27:104:12Waning Gibbous13Fri
14Sat2:087.82:118.97:560.98:34-0.17:114:12Waning Gibbous14Sat
15Sun2:558.03:038.78:490.89:23-0.17:114:12Third Quarter15Sun
16Mon3:458.24:008.49:460.710:150.07:124:13Third Quarter16Mon
17Tue4:398.45:008.210:470.511:100.27:134:13Third Quarter17Tue
18Wed5:358.76:048.011:510.37:134:13Third Quarter18Wed
19Thu6:339.07:108.012:080.312:550.07:144:14Waning Crescent19Thu
20Fri7:329.38:148.01:070.31:58-0.37:144:14Waning Crescent20Fri
21Sat8:309.69:148.12:060.32:58-0.77:154:15Waning Crescent21Sat
22Sun9:259.810:108.23:030.23:53-0.97:164:15New Moon22Sun
23Mon10:189.911:038.33:570.14:46-1.07:164:16New Moon23Mon
24Tue11:109.911:548.34:490.15:36-1.07:164:16New Moon24Tue
25Wed11:599.75:400.16:24-0.97:174:17Waxing Crescent25Wed
26Thu12:428.212:479.46:290.37:10-0.67:174:18Waxing Crescent26Thu
27Fri1:298.11:359.17:170.57:55-0.37:174:18Waxing Crescent27Fri
28Sat2:158.02:228.68:070.78:410.17:184:19Waxing Crescent28Sat
29Sun3:017.93:118.18:571.09:260.57:184:20First Quarter29Sun
30Mon3:477.84:017.69:501.210:120.97:184:21First Quarter30Mon
31Tue4:357.74:547.210:451.311:011.27:184:21First Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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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 transitional phase. Tonight's moon is 21% 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 Waxing Crescent (21% 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

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