Nearby Harbors
43.0785’ N, 70.7253’ W

Seavey Island, NH

65°
H -°
L 61°
S
0mph
Low tide
10:08 pm
Photo Credits

Tides Today & Tomorrow in Seavey Island, NH

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Seavey Island, NH.
Next low tide : in 1h 57m at 10:08 pm (0.7 ft)
Next high tide (tomorrow) : 4:23 am (7.5 ft)
Sunset today : 6:51 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8419870
Common Questions About Tides

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Seavey Island, NH Tides - Mar 1876

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:238.92:568.08:42-0.28:540.36:215:36First Quarter1Wed
2Thu3:128.93:517.69:370.09:480.66:205:37First Quarter2Thu
3Fri4:088.84:547.310:390.210:480.96:185:39First Quarter3Fri
4Sat5:118.66:057.111:460.311:561.06:165:40First Quarter4Sat
5Sun6:228.67:187.212:570.36:155:41Waxing Gibbous5Sun
6Mon7:348.78:257.61:071.02:050.06:135:42Waxing Gibbous6Mon
7Tue8:409.09:248.02:150.63:05-0.36:115:44Waxing Gibbous7Tue
8Wed9:399.310:168.53:160.23:58-0.66:105:45Full Moon8Wed
9Thu10:329.411:038.84:11-0.24:46-0.76:085:46Full Moon9Thu
10Fri11:219.411:479.05:02-0.55:30-0.76:065:47Full Moon10Fri
11Sat12:079.25:49-0.66:12-0.56:045:48Full Moon11Sat
12Sun12:289.112:518.96:34-0.66:52-0.26:035:50Waning Gibbous12Sun
13Mon1:089.01:348.57:18-0.47:320.26:015:51Waning Gibbous13Mon
14Tue1:478.82:188.08:030.08:130.75:595:52Waning Gibbous14Tue
15Wed2:288.53:047.58:490.38:561.25:575:53Waning Gibbous15Wed
16Thu3:138.13:547.09:390.79:441.65:565:54Third Quarter16Thu
17Fri4:027.84:496.710:331.110:371.95:545:56Third Quarter17Fri
18Sat4:577.65:486.511:311.311:352.15:525:57Third Quarter18Sat
19Sun5:577.56:506.512:321.45:505:58Third Quarter19Sun
20Mon6:597.57:486.712:362.01:311.35:485:59Waning Crescent20Mon
21Tue7:567.78:387.11:361.82:221.05:476:00Waning Crescent21Tue
22Wed8:468.09:217.52:281.53:060.75:456:01Waning Crescent22Wed
23Thu9:318.310:008.03:151.03:450.45:436:03Waning Crescent23Thu
24Fri10:138.610:378.43:580.54:220.15:416:04New Moon24Fri
25Sat10:548.711:138.84:390.14:59-0.15:406:05New Moon25Sat
26Sun11:368.811:519.25:20-0.35:37-0.25:386:06New Moon26Sun
27Mon12:188.86:02-0.66:16-0.25:366:07Waxing Crescent27Mon
28Tue12:309.41:038.66:47-0.86:580.05:346:08Waxing Crescent28Tue
29Wed1:139.51:508.37:34-0.77:440.25:326:10Waxing Crescent29Wed
30Thu2:019.42:438.08:26-0.58:360.55:316:11Waxing Crescent30Thu
31Fri2:549.23:437.79:24-0.29:340.85:296:12First Quarter31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8419870)

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Common Questions About Seavey Island, NH Tides

Collapse All
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 30% 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 Waxing Crescent (30% 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

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