Tides Today & Tomorrow in Squamscott River, Great Bay, NH

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 25m at 9:04 pm (-0.1 ft)
Next high tide (tomorrow) : 3:00 am (8.6 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:18 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Mar 1999

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:277.112:417.86:48-0.17:22-0.66:195:32Full Moon1Mon
2Tue1:137.31:277.87:35-0.28:05-0.66:185:33Full Moon2Tue
3Wed1:557.32:107.68:19-0.28:44-0.46:165:34Full Moon3Wed
4Thu2:347.32:507.49:00-0.29:21-0.26:145:36Waning Gibbous4Thu
5Fri3:117.23:307.29:390.09:570.16:135:37Waning Gibbous5Fri
6Sat3:487.14:106.810:190.210:350.46:115:38Waning Gibbous6Sat
7Sun4:266.94:536.511:010.411:150.76:095:39Waning Gibbous7Sun
8Mon5:086.75:406.211:460.611:591.06:085:40Third Quarter8Mon
9Tue5:536.56:315.912:350.86:065:42Third Quarter9Tue
10Wed6:446.47:275.712:471.21:291.06:045:43Third Quarter10Wed
11Thu7:396.38:265.71:411.42:271.06:025:44Third Quarter11Thu
12Fri8:386.49:265.82:391.43:280.96:015:45Waning Crescent12Fri
13Sat9:376.610:206.13:391.34:240.65:595:46Waning Crescent13Sat
14Sun10:306.911:076.54:341.05:130.35:575:48Waning Crescent14Sun
15Mon11:187.311:516.95:240.55:58-0.15:555:49Waning Crescent15Mon
16Tue12:047.76:110.16:41-0.55:545:50New Moon16Tue
17Wed12:347.412:508.06:57-0.47:24-0.85:525:51New Moon17Wed
18Thu1:167.81:368.27:43-0.88:08-1.05:505:52New Moon18Thu
19Fri1:598.12:228.28:30-1.18:52-1.05:485:54Waxing Crescent19Fri
20Sat2:448.33:118.19:18-1.29:39-0.95:475:55Waxing Crescent20Sat
21Sun3:308.34:027.810:09-1.110:28-0.65:455:56Waxing Crescent21Sun
22Mon4:218.24:587.411:03-0.911:22-0.25:435:57Waxing Crescent22Mon
23Tue5:177.96:007.112:03-0.65:415:58First Quarter23Tue
24Wed6:197.67:066.812:220.21:07-0.35:396:00First Quarter24Wed
25Thu7:267.38:166.61:260.52:160.05:386:01First Quarter25Thu
26Fri8:367.29:256.62:360.73:270.15:366:02Waxing Gibbous26Fri
27Sat9:447.210:276.83:480.64:320.05:346:03Waxing Gibbous27Sat
28Sun10:457.311:217.04:520.55:28-0.15:326:04Waxing Gibbous28Sun
29Mon11:397.45:470.26:17-0.25:316:05Waxing Gibbous29Mon
30Tue12:087.212:267.46:360.07:01-0.25:296:07Full Moon30Tue
31Wed12:517.31:107.47:20-0.17:40-0.15:276:08Full Moon31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

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What time does the tide turn (slack tide) in Squamscott River, Great Bay, NH today?

Slack tide in Squamscott River, Great Bay, NH is approximately 12:02 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 Squamscott River, Great Bay, NH?

Squamscott River, Great Bay, 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 Squamscott River, Great Bay, 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 Squamscott River, Great Bay, NH?

Tide predictions for Squamscott River, Great Bay, 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 Squamscott River, Great Bay, NH?

Tide data for Squamscott River, Great Bay, NH is sourced from NOAA Station #8422687. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8422687.

What is the moon phase in Squamscott River, Great Bay, NH tonight?

Tonight the moon over Squamscott River, Great Bay, NH is New Moon (2% illuminated). This places Squamscott River, Great Bay, 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