Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

47°
H 51°
L 32°
NW
9mph
Low tide
10:22 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Saturday, October 17, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 3h 20m at 10:22 am (1.9 ft)
Next high tide : 4:38 pm (8.0 ft)
Sunset today : 5:57 pm
Sunrise tomorrow : 6:59 am
Moon phase : First Quarter (41% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Dec 1822

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:358.712:4310.36:24-0.27:11-1.26:584:13Waning Gibbous1Sun
2Mon1:318.61:409.97:200.08:06-0.96:594:13Waning Gibbous2Mon
3Tue2:298.42:409.58:190.39:04-0.57:004:13Waning Gibbous3Tue
4Wed3:288.33:428.99:220.610:03-0.17:014:12Third Quarter4Wed
5Thu4:298.34:468.510:280.811:020.37:024:12Third Quarter5Thu
6Fri5:288.35:518.011:340.87:034:12Third Quarter6Fri
7Sat6:278.36:557.812:000.612:390.87:044:12Waning Crescent7Sat
8Sun7:238.47:557.612:570.91:400.77:054:12Waning Crescent8Sun
9Mon8:148.58:507.51:511.12:350.57:064:12Waning Crescent9Mon
10Tue9:008.69:387.52:401.23:240.37:074:12Waning Crescent10Tue
11Wed9:438.610:237.53:251.24:090.27:084:12New Moon11Wed
12Thu10:238.711:047.54:061.34:490.27:094:12New Moon12Thu
13Fri11:018.711:427.44:451.35:270.27:104:12New Moon13Fri
14Sat11:388.75:221.36:040.27:104:12New Moon14Sat
15Sun12:207.412:158.65:591.36:390.27:114:12Waxing Crescent15Sun
16Mon12:567.412:528.66:371.37:150.37:124:13Waxing Crescent16Mon
17Tue1:347.41:308.47:161.37:520.37:134:13Waxing Crescent17Tue
18Wed2:127.52:118.37:581.38:310.47:134:13Waxing Crescent18Wed
19Thu2:527.62:568.18:431.39:130.57:144:14First Quarter19Thu
20Fri3:357.73:448.09:331.29:580.57:144:14First Quarter20Fri
21Sat4:217.94:377.810:261.010:470.67:154:15First Quarter21Sat
22Sun5:098.25:337.711:230.811:380.67:154:15First Quarter22Sun
23Mon6:018.56:347.612:230.57:164:16Waxing Gibbous23Mon
24Tue6:578.97:377.712:340.61:240.17:164:16Waxing Gibbous24Tue
25Wed7:549.48:377.91:320.52:24-0.47:174:17Waxing Gibbous25Wed
26Thu8:509.89:358.12:290.23:21-0.97:174:17Full Moon26Thu
27Fri9:4610.110:328.43:260.04:16-1.27:174:18Full Moon27Fri
28Sat10:4110.311:278.64:21-0.25:10-1.47:184:19Full Moon28Sat
29Sun11:3610.35:16-0.36:03-1.57:184:20Full Moon29Sun
30Mon12:218.712:3110.26:11-0.46:55-1.37:184:20Waning Gibbous30Mon
31Tue1:148.71:269.87:06-0.37:46-1.17:184:21Waning Gibbous31Tue
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 neap phase. Tonight's moon is 41% 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 minimum.

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 First Quarter (41% illuminated). This places Seavey Island, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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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