Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in Seavey Island, NH.
Next low tide : 4:48 pm (0.3 ft)
Next high tide : in 23m at 11:00 am (8.2 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:15 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

Seavey Island, NH Tides - Mar 2060

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon9:569.410:328.43:370.24:17-0.76:175:32New Moon1Mon
2Tue10:469.711:199.04:28-0.45:03-1.16:155:34New Moon2Tue
3Wed11:369.85:19-0.85:49-1.26:135:35New Moon3Wed
4Thu12:059.412:279.86:10-1.16:35-1.26:125:36Waxing Crescent4Thu
5Fri12:529.61:189.57:01-1.27:23-1.06:105:37Waxing Crescent5Fri
6Sat1:419.72:129.17:54-1.18:13-0.66:085:39Waxing Crescent6Sat
7Sun2:339.53:098.68:51-0.89:07-0.16:065:40First Quarter7Sun
8Mon3:299.24:118.09:52-0.410:060.56:055:41First Quarter8Mon
9Tue4:308.95:177.610:570.011:100.96:035:42First Quarter9Tue
10Wed5:368.56:287.312:060.36:015:44First Quarter10Wed
11Thu6:468.37:377.312:181.21:160.45:595:45Waxing Gibbous11Thu
12Fri7:538.38:387.41:271.22:200.45:585:46Waxing Gibbous12Fri
13Sat8:528.49:307.72:291.13:140.25:565:47Waxing Gibbous13Sat
14Sun10:428.511:147.94:230.85:000.16:546:48Waxing Gibbous14Sun
15Mon11:268.611:538.05:090.65:400.16:526:50Full Moon15Mon
16Tue12:058.65:500.46:150.26:516:51Full Moon16Tue
17Wed12:288.212:418.56:270.36:470.36:496:52Full Moon17Wed
18Thu12:598.31:158.37:020.37:180.46:476:53Full Moon18Thu
19Fri1:308.31:508.27:360.37:490.66:456:54Waning Gibbous19Fri
20Sat2:018.32:257.98:110.38:210.86:446:55Waning Gibbous20Sat
21Sun2:338.33:037.78:470.48:561.16:426:57Waning Gibbous21Sun
22Mon3:098.23:447.49:270.59:341.36:406:58Waning Gibbous22Mon
23Tue3:498.14:307.110:120.710:191.56:386:59Third Quarter23Tue
24Wed4:368.05:216.911:030.911:101.76:377:00Third Quarter24Wed
25Thu5:297.96:196.812:001.06:357:01Third Quarter25Thu
26Fri6:298.07:226.912:081.71:010.96:337:03Third Quarter26Fri
27Sat7:338.18:247.21:121.52:040.76:317:04Waning Crescent27Sat
28Sun8:388.59:227.82:171.13:040.26:297:05Waning Crescent28Sun
29Mon9:388.910:148.53:190.63:57-0.26:287:06Waning Crescent29Mon
30Tue10:339.311:039.14:16-0.14:47-0.76:267:07New Moon30Tue
31Wed11:269.611:519.75:09-0.85:35-1.06:247:08New Moon31Wed
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 1:54 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 1% 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 (1% 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