Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 15m at 6:35 am (-1.1 ft)
Next high tide : 12:54 pm (8.7 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:17 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Dec 2060

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:597.85:128.210:591.211:300.46:554:08First Quarter1Wed
2Thu5:548.26:158.212:020.86:564:08First Quarter2Thu
3Fri6:508.67:188.312:270.31:050.36:574:08Waxing Gibbous3Fri
4Sat7:469.28:198.51:240.12:06-0.36:584:08Waxing Gibbous4Sat
5Sun8:409.79:188.62:20-0.13:04-0.86:594:08Waxing Gibbous5Sun
6Mon9:3310.110:148.83:14-0.23:59-1.37:004:07Full Moon6Mon
7Tue10:2510.311:098.84:07-0.34:52-1.57:014:07Full Moon7Tue
8Wed11:1810.44:59-0.35:45-1.57:024:07Full Moon8Wed
9Thu12:038.712:1110.25:52-0.26:38-1.37:034:07Waning Gibbous9Thu
10Fri12:578.51:049.96:450.17:31-1.07:044:07Waning Gibbous10Fri
11Sat1:518.31:599.57:390.48:25-0.67:044:08Waning Gibbous11Sat
12Sun2:478.12:559.08:360.79:20-0.17:054:08Waning Gibbous12Sun
13Mon3:427.93:538.59:351.010:150.37:064:08Third Quarter13Mon
14Tue4:387.84:518.010:361.211:090.77:074:08Third Quarter14Tue
15Wed5:327.75:497.611:371.37:074:08Third Quarter15Wed
16Thu6:247.86:477.312:021.012:371.37:084:09Third Quarter16Thu
17Fri7:157.97:437.212:531.21:331.17:094:09Waning Crescent17Fri
18Sat8:028.08:347.21:431.42:240.97:094:09Waning Crescent18Sat
19Sun8:458.29:217.22:281.43:100.77:104:10Waning Crescent19Sun
20Mon9:268.310:047.33:101.43:520.57:104:10Waning Crescent20Mon
21Tue10:048.510:457.33:501.34:320.37:114:11New Moon21Tue
22Wed10:428.611:247.44:281.35:090.27:114:11New Moon22Wed
23Thu11:208.75:051.25:470.17:124:12New Moon23Thu
24Fri12:037.411:59 AM8.85:431.16:240.07:124:13New Moon24Fri
25Sat12:427.412:398.86:231.17:030.07:134:13Waxing Crescent25Sat
26Sun1:227.51:218.87:051.07:440.07:134:14Waxing Crescent26Sun
27Mon2:037.62:068.77:510.98:270.07:134:15Waxing Crescent27Mon
28Tue2:487.82:568.58:420.99:150.07:134:15First Quarter28Tue
29Wed3:378.03:508.39:370.810:050.17:144:16First Quarter29Wed
30Thu4:288.34:488.110:370.610:590.27:144:17First Quarter30Thu
31Fri5:238.55:517.911:400.47:144:18First Quarter31Fri
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 9:44 am — 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 spring phase. Tonight's moon is 2% 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 New Moon (2% 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