Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Sunday, June 28, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 2h 48m at 5:09 pm (1.5 ft)
Next high tide : 11:24 pm (8.7 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:05 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - May 2008

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:108.08:428.31:561.12:220.75:357:44Waning Crescent1Thu
2Fri9:088.29:328.92:540.53:140.45:347:45Waning Crescent2Fri
3Sat10:038.510:209.43:49-0.14:040.25:327:46Waning Crescent3Sat
4Sun10:558.711:099.94:41-0.64:530.05:317:47New Moon4Sun
5Mon11:488.811:5910.25:33-1.15:42-0.25:307:48New Moon5Mon
6Tue12:428.86:25-1.36:33-0.15:287:50New Moon6Tue
7Wed12:5010.31:368.77:18-1.37:260.05:277:51Waxing Crescent7Wed
8Thu1:4510.22:338.68:12-1.28:210.25:267:52Waxing Crescent8Thu
9Fri2:419.93:328.49:09-0.99:210.55:257:53Waxing Crescent9Fri
10Sat3:429.54:348.210:09-0.510:240.85:247:54First Quarter10Sat
11Sun4:469.15:388.211:12-0.211:310.95:227:55First Quarter11Sun
12Mon5:528.76:408.212:140.15:217:56First Quarter12Mon
13Tue6:588.47:408.312:391.01:150.45:207:57First Quarter13Tue
14Wed8:028.28:368.51:450.92:120.65:197:58Waxing Gibbous14Wed
15Thu9:018.19:268.72:460.73:050.75:187:59Waxing Gibbous15Thu
16Fri9:548.010:108.83:400.53:520.85:178:00Waxing Gibbous16Fri
17Sat10:418.010:508.94:280.34:340.95:168:01Waxing Gibbous17Sat
18Sun11:237.911:278.95:100.25:131.05:158:03Full Moon18Sun
19Mon12:037.85:500.15:501.15:148:04Full Moon19Mon
20Tue12:028.812:417.86:270.16:251.35:138:05Full Moon20Tue
21Wed12:378.81:187.77:030.27:001.45:138:06Full Moon21Wed
22Thu1:138.71:557.67:380.37:371.45:128:07Waning Gibbous22Thu
23Fri1:498.72:337.58:150.48:151.55:118:07Waning Gibbous23Fri
24Sat2:288.63:137.48:530.48:561.65:108:08Waning Gibbous24Sat
25Sun3:108.53:567.49:340.59:411.65:098:09Waning Gibbous25Sun
26Mon3:558.34:407.510:180.610:321.55:098:10Third Quarter26Mon
27Tue4:458.25:277.711:050.711:261.45:088:11Third Quarter27Tue
28Wed5:388.16:178.011:540.75:078:12Third Quarter28Wed
29Thu6:348.07:088.412:231.212:460.75:078:13Third Quarter29Thu
30Fri7:348.08:028.81:230.81:400.65:068:14Waning Crescent30Fri
31Sat8:358.08:579.32:240.42:360.55:068:15Waning Crescent31Sat
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 8:16 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 spring phase. Tonight's moon is 98% 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 Full Moon (98% 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