Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide (tomorrow) : 1:57 am (0.7 ft)
Next high tide : in 42m at 7:38 pm (8.6 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jan 2037

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:119.610:528.33:530.24:37-0.97:144:19Full Moon1Thu
2Fri11:009.911:428.54:420.05:25-1.27:144:19Full Moon2Fri
3Sat11:5110.05:32-0.36:14-1.37:144:20Full Moon3Sat
4Sun12:338.712:4310.06:24-0.47:05-1.47:144:21Waning Gibbous4Sun
5Mon1:258.81:369.97:18-0.47:57-1.37:144:22Waning Gibbous5Mon
6Tue2:198.92:339.58:15-0.38:52-1.07:144:23Waning Gibbous6Tue
7Wed3:158.93:339.19:15-0.19:49-0.77:134:24Third Quarter7Wed
8Thu4:148.94:368.710:190.010:48-0.47:134:25Third Quarter8Thu
9Fri5:148.95:418.411:250.111:480.07:134:26Third Quarter9Fri
10Sat6:168.96:488.112:310.17:134:28Waning Crescent10Sat
11Sun7:168.97:528.012:490.21:350.07:124:29Waning Crescent11Sun
12Mon8:149.08:517.91:490.42:35-0.27:124:30Waning Crescent12Mon
13Tue9:079.19:448.02:440.43:28-0.37:124:31Waning Crescent13Tue
14Wed9:549.110:318.03:340.44:16-0.47:114:32New Moon14Wed
15Thu10:389.111:147.94:190.54:59-0.47:114:33New Moon15Thu
16Fri11:189.011:537.95:010.55:38-0.37:104:35New Moon16Fri
17Sat11:558.95:400.66:15-0.27:104:36New Moon17Sat
18Sun12:307.812:318.76:180.76:50-0.17:094:37Waxing Crescent18Sun
19Mon1:057.81:088.66:550.77:250.17:084:38Waxing Crescent19Mon
20Tue1:417.71:458.47:330.88:010.37:084:40Waxing Crescent20Tue
21Wed2:187.72:258.18:130.98:380.57:074:41Waxing Crescent21Wed
22Thu2:577.73:097.88:561.09:190.77:064:42First Quarter22Thu
23Fri3:387.73:567.69:441.110:020.97:054:43First Quarter23Fri
24Sat4:247.74:477.310:351.110:501.07:054:45First Quarter24Sat
25Sun5:137.85:437.111:311.011:431.17:044:46First Quarter25Sun
26Mon6:068.06:447.112:300.87:034:47Waxing Gibbous26Mon
27Tue7:038.37:457.312:401.01:310.57:024:49Waxing Gibbous27Tue
28Wed8:018.78:437.61:380.82:290.07:014:50Waxing Gibbous28Wed
29Thu8:569.29:388.02:360.53:24-0.57:004:51Waxing Gibbous29Thu
30Fri9:509.610:318.43:310.04:15-1.06:594:53Full Moon30Fri
31Sat10:4310.011:238.84:24-0.45:06-1.46:584:54Full Moon31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

Common Questions About Seavey Island, NH Tides

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What time does the tide turn (slack tide) in Seavey Island, NH today?

Slack tide in Seavey Island, NH is approximately 10:47 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 67% 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 First Quarter (67% 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