Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

62°
H 63°
L 46°
ESE
7mph
High tide
6:16 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Saturday, September 19, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 12:50 am (1.4 ft)
Next high tide : in 4h 15m at 6:16 pm (7.8 ft)
Sunset today : 6:46 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Dec 1872

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:109.811:528.44:540.25:36-0.96:594:13New Moon1Sun
2Mon11:579.95:410.26:24-1.07:004:12Waxing Crescent2Mon
3Tue12:428.412:479.96:300.27:14-1.07:014:12Waxing Crescent3Tue
4Wed1:348.31:409.77:220.38:08-0.87:024:12Waxing Crescent4Wed
5Thu2:298.22:389.48:190.49:05-0.67:034:12Waxing Crescent5Thu
6Fri3:298.23:409.19:210.610:05-0.37:044:12First Quarter6Fri
7Sat4:318.24:468.710:270.711:06-0.17:054:12First Quarter7Sat
8Sun5:338.45:538.511:350.67:064:12First Quarter8Sun
9Mon6:358.67:008.312:070.112:430.57:074:12Waxing Gibbous9Mon
10Tue7:338.88:048.21:070.31:470.27:084:12Waxing Gibbous10Tue
11Wed8:289.09:018.22:030.32:45-0.17:094:12Waxing Gibbous11Wed
12Thu9:179.29:538.12:550.43:37-0.37:094:12Waxing Gibbous12Thu
13Fri10:039.310:418.13:430.54:25-0.47:104:12Full Moon13Fri
14Sat10:469.211:268.04:280.65:09-0.47:114:12Full Moon14Sat
15Sun11:269.15:100.75:51-0.37:124:13Full Moon15Sun
16Mon12:087.812:069.05:500.96:31-0.27:124:13Full Moon16Mon
17Tue12:487.712:458.86:301.07:100.07:134:13Waning Gibbous17Tue
18Wed1:287.51:258.67:111.27:500.37:144:14Waning Gibbous18Wed
19Thu2:087.42:078.37:531.48:310.57:144:14Waning Gibbous19Thu
20Fri2:507.42:518.18:381.59:130.77:154:14Waning Gibbous20Fri
21Sat3:357.33:387.89:261.69:570.87:154:15Third Quarter21Sat
22Sun4:207.44:287.610:171.610:430.97:164:15Third Quarter22Sun
23Mon5:077.55:217.411:101.511:301.07:164:16Third Quarter23Mon
24Tue5:557.76:167.312:051.37:174:17Third Quarter24Tue
25Wed6:448.07:137.412:201.01:011.07:174:17Waning Crescent25Wed
26Thu7:338.48:087.51:111.01:550.57:174:18Waning Crescent26Thu
27Fri8:228.89:017.72:020.82:480.07:184:19Waning Crescent27Fri
28Sat9:109.39:528.02:520.53:38-0.57:184:19New Moon28Sat
29Sun9:599.710:438.23:410.34:28-0.97:184:20New Moon29Sun
30Mon10:4910.011:348.44:310.05:17-1.27:184:21New Moon30Mon
31Tue11:4110.25:22-0.26:08-1.47:184:22New Moon31Tue
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 58% 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 (58% 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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