Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

65°
H 68°
L 63°
S
7mph
High tide
1:40 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, September 13, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 7:49 pm (-0.4 ft)
Next high tide : in 1h 03m at 1:40 pm (9.3 ft)
Sunset today : 6:56 pm
Sunrise tomorrow : 6:20 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Dec 1883

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:047.812:038.85:481.06:230.06:544:09New Moon1Sat
2Sun12:417.812:408.86:251.07:000.16:554:09Waxing Crescent2Sun
3Mon1:197.81:198.77:051.07:390.16:564:08Waxing Crescent3Mon
4Tue1:597.82:028.67:481.08:220.16:574:08Waxing Crescent4Tue
5Wed2:437.92:498.58:351.09:080.16:584:08First Quarter5Wed
6Thu3:308.03:408.49:280.99:580.26:594:08First Quarter6Thu
7Fri4:208.24:378.310:250.810:510.27:004:08First Quarter7Fri
8Sat5:148.55:378.211:250.511:470.27:014:08First Quarter8Sat
9Sun6:118.86:418.212:270.27:024:08Waxing Gibbous9Sun
10Mon7:099.27:448.412:460.11:30-0.27:034:08Waxing Gibbous10Mon
11Tue8:079.78:458.61:44-0.12:30-0.77:044:08Waxing Gibbous11Tue
12Wed9:0310.19:428.82:42-0.33:27-1.27:054:08Full Moon12Wed
13Thu9:5710.310:389.03:37-0.54:21-1.57:064:08Full Moon13Thu
14Fri10:5010.511:329.04:31-0.65:14-1.67:064:08Full Moon14Fri
15Sat11:4310.45:24-0.66:05-1.57:074:08Full Moon15Sat
16Sun12:259.012:3510.16:16-0.56:56-1.37:084:09Waning Gibbous16Sun
17Mon1:178.91:279.77:09-0.27:47-0.97:094:09Waning Gibbous17Mon
18Tue2:098.72:209.28:020.18:38-0.57:094:09Waning Gibbous18Tue
19Wed3:018.53:158.78:580.59:310.07:104:10Third Quarter19Wed
20Thu3:558.34:118.29:560.810:240.47:104:10Third Quarter20Thu
21Fri4:488.15:087.710:551.011:170.87:114:11Third Quarter21Fri
22Sat5:428.06:077.411:551.17:114:11Third Quarter22Sat
23Sun6:368.07:067.212:101.112:541.17:124:12Waning Crescent23Sun
24Mon7:288.18:027.21:041.31:510.97:124:12Waning Crescent24Mon
25Tue8:178.28:537.31:551.32:410.77:134:13Waning Crescent25Tue
26Wed9:028.49:397.42:421.33:270.57:134:13Waning Crescent26Wed
27Thu9:448.610:217.53:251.14:080.37:134:14New Moon27Thu
28Fri10:248.711:017.64:061.04:460.17:144:15New Moon28Fri
29Sat11:028.911:407.84:450.95:23-0.17:144:16New Moon29Sat
30Sun11:408.95:240.76:00-0.27:144:16New Moon30Sun
31Mon12:177.912:189.06:030.66:37-0.37:144:17Waxing Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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Common Questions About Seavey Island, NH Tides

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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 7% 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 Crescent (7% 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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