Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

65°
H -°
L 63°
SW
4mph
High tide
2:05 am
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, September 14, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 8:05 am (0.2 ft)
Next high tide : in 2h 02m at 2:05 am (8.9 ft)
Sunset today : 6:55 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Jan 1883

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:387.84:587.310:481.311:031.17:184:22Third Quarter1Mon
2Tue5:277.75:537.011:431.311:531.37:184:23Third Quarter2Tue
3Wed6:197.86:516.912:401.27:184:24Waning Crescent3Wed
4Thu7:118.07:477.012:451.41:351.07:184:25Waning Crescent4Thu
5Fri8:018.28:397.21:371.32:270.77:184:26Waning Crescent5Fri
6Sat8:498.59:277.42:271.13:130.37:184:27Waning Crescent6Sat
7Sun9:338.910:127.73:140.83:57-0.17:184:28New Moon7Sun
8Mon10:179.210:568.03:590.54:40-0.57:184:29New Moon8Mon
9Tue11:029.511:398.44:440.25:23-0.87:184:30New Moon9Tue
10Wed11:479.75:29-0.16:06-1.07:174:31New Moon10Wed
11Thu12:238.612:339.76:16-0.36:50-1.17:174:32Waxing Crescent11Thu
12Fri1:098.91:219.67:05-0.47:37-1.17:174:33Waxing Crescent12Fri
13Sat1:569.02:139.47:57-0.58:26-0.97:164:35Waxing Crescent13Sat
14Sun2:479.13:089.08:52-0.49:18-0.67:164:36First Quarter14Sun
15Mon3:419.14:078.69:52-0.210:14-0.37:154:37First Quarter15Mon
16Tue4:399.15:118.210:55-0.111:130.07:154:38First Quarter16Tue
17Wed5:409.06:187.912:010.07:144:39First Quarter17Wed
18Thu6:449.07:267.812:160.31:08-0.17:144:40Waxing Gibbous18Thu
19Fri7:489.18:307.81:200.42:12-0.27:134:42Waxing Gibbous19Fri
20Sat8:479.29:288.02:210.43:10-0.47:124:43Waxing Gibbous20Sat
21Sun9:419.310:208.13:170.34:03-0.57:124:44Full Moon21Sun
22Mon10:309.311:078.24:090.24:50-0.67:114:46Full Moon22Mon
23Tue11:169.311:508.34:560.15:33-0.67:104:47Full Moon23Tue
24Wed11:589.15:410.16:13-0.57:094:48Full Moon24Wed
25Thu12:308.312:388.96:230.26:51-0.37:094:49Waning Gibbous25Thu
26Fri1:088.21:178.67:030.37:280.07:084:51Waning Gibbous26Fri
27Sat1:458.21:578.37:450.58:060.27:074:52Waning Gibbous27Sat
28Sun2:248.12:397.98:270.78:450.57:064:53Waning Gibbous28Sun
29Mon3:048.03:237.59:120.99:270.87:054:55Third Quarter29Mon
30Tue3:487.94:127.210:011.110:121.17:044:56Third Quarter30Tue
31Wed4:357.85:047.010:531.211:021.37:034:57Third Quarter31Wed
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 spring phase. Tonight's moon is 14% 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 (14% 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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