Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 10:42 pm (0.9 ft)
Next high tide : in 2h 39m at 4:36 pm (8.3 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:10 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jun 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:428.79:119.62:260.02:46-0.15:058:15Waning Crescent1Sun
2Mon9:448.810:069.83:28-0.43:43-0.15:058:16Waning Crescent2Mon
3Tue10:408.910:5710.04:24-0.74:36-0.15:058:17New Moon3Tue
4Wed11:338.911:4510.05:16-0.95:26-0.15:048:17New Moon4Wed
5Thu12:238.86:06-1.06:140.15:048:18New Moon5Thu
6Fri12:329.91:118.76:52-0.97:000.35:038:19New Moon6Fri
7Sat1:179.61:568.57:37-0.67:450.65:038:19Waxing Crescent7Sat
8Sun2:009.32:408.38:21-0.38:290.85:038:20Waxing Crescent8Sun
9Mon2:439.03:238.19:040.09:141.15:038:21Waxing Crescent9Mon
10Tue3:278.64:088.09:480.310:011.35:038:21Waxing Crescent10Tue
11Wed4:128.34:537.910:320.610:501.55:028:22First Quarter11Wed
12Thu5:008.05:397.811:170.911:411.65:028:22First Quarter12Thu
13Fri5:507.86:267.912:041.15:028:23First Quarter13Fri
14Sat6:427.67:148.012:341.512:511.25:028:23First Quarter14Sat
15Sun7:377.58:038.21:281.41:401.35:028:24Waxing Gibbous15Sun
16Mon8:327.58:528.42:211.22:301.35:028:24Waxing Gibbous16Mon
17Tue9:247.69:388.73:130.93:181.15:028:24Waxing Gibbous17Tue
18Wed10:137.710:239.04:010.54:051.05:028:25Waxing Gibbous18Wed
19Thu11:017.911:079.44:470.14:500.75:038:25Full Moon19Thu
20Fri11:478.211:539.65:32-0.35:360.55:038:25Full Moon20Fri
21Sat12:358.46:17-0.66:240.35:038:25Full Moon21Sat
22Sun12:409.81:238.67:04-0.87:130.25:038:26Waning Gibbous22Sun
23Mon1:309.82:128.77:52-0.98:040.15:048:26Waning Gibbous23Mon
24Tue2:219.83:048.98:41-0.98:590.15:048:26Waning Gibbous24Tue
25Wed3:159.63:599.09:34-0.89:570.15:048:26Waning Gibbous25Wed
26Thu4:139.34:569.110:29-0.610:590.25:058:26Third Quarter26Thu
27Fri5:149.05:549.211:27-0.45:058:26Third Quarter27Fri
28Sat6:178.86:549.312:030.212:26-0.25:058:26Third Quarter28Sat
29Sun7:238.57:559.41:080.11:270.05:068:26Waning Crescent29Sun
30Mon8:288.48:549.52:120.02:270.25:068:26Waning Crescent30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

Common Questions About Seavey Island, NH Tides

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

Slack tide in Seavey Island, NH is approximately 7:39 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 62% 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 Third Quarter (62% 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