Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 3:39 pm (0.6 ft)
Next high tide : in 2h 38m at 9:49 am (7.8 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Jul 2098

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:1910.12:078.67:46-1.07:550.25:078:26Waxing Crescent1Tue
2Wed2:1510.03:028.78:39-1.08:540.25:088:26Waxing Crescent2Wed
3Thu3:139.73:588.99:34-0.89:540.25:098:25Waxing Crescent3Thu
4Fri4:129.44:559.010:29-0.510:570.35:098:25First Quarter4Fri
5Sat5:148.95:529.011:25-0.25:108:25First Quarter5Sat
6Sun6:168.56:499.112:010.312:220.25:118:24First Quarter6Sun
7Mon7:198.17:469.11:040.31:190.55:118:24Waxing Gibbous7Mon
8Tue8:227.98:429.02:070.32:160.85:128:24Waxing Gibbous8Tue
9Wed9:227.79:349.03:070.23:121.05:138:23Waxing Gibbous9Wed
10Thu10:167.710:239.04:020.24:031.15:148:23Waxing Gibbous10Thu
11Fri11:057.611:089.04:510.14:491.25:148:22Full Moon11Fri
12Sat11:507.611:498.95:360.15:331.25:158:22Full Moon12Sat
13Sun12:317.66:170.26:131.35:168:21Full Moon13Sun
14Mon12:288.91:097.66:540.26:521.35:178:20Full Moon14Mon
15Tue1:068.81:457.67:300.37:291.35:188:20Waning Gibbous15Tue
16Wed1:428.72:217.78:040.48:071.35:188:19Waning Gibbous16Wed
17Thu2:208.52:567.78:390.58:471.35:198:18Waning Gibbous17Thu
18Fri2:598.43:337.89:140.69:291.35:208:17Waning Gibbous18Fri
19Sat3:408.14:127.99:520.710:141.35:218:17Third Quarter19Sat
20Sun4:257.94:538.010:320.911:021.25:228:16Third Quarter20Sun
21Mon5:137.65:378.211:161.111:551.15:238:15Third Quarter21Mon
22Tue6:057.46:268.412:041.25:248:14Third Quarter22Tue
23Wed7:027.27:218.612:521.012:571.35:258:13Waning Crescent23Wed
24Thu8:047.28:198.91:520.81:551.35:268:12Waning Crescent24Thu
25Fri9:077.39:199.22:540.42:561.15:278:11Waning Crescent25Fri
26Sat10:077.610:179.63:540.03:560.85:288:10Waning Crescent26Sat
27Sun11:058.011:149.94:50-0.44:530.45:298:09New Moon27Sun
28Mon12:008.45:44-0.85:500.15:308:08New Moon28Mon
29Tue12:1110.212:558.86:36-1.16:46-0.25:318:07New Moon29Tue
30Wed1:0610.21:489.17:28-1.27:42-0.35:328:06Waxing Crescent30Wed
31Thu2:0210.12:409.38:19-1.18:38-0.45:338:05Waxing Crescent31Thu
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 12:44 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 6% 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 Waning Crescent (6% 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