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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 38m at 3:44 am (0.8 ft)
Next high tide : 9:32 am (6.0 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:25 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Aug 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:517.71:306.87:40-0.27:460.55:348:05Full Moon1Sun
2Mon1:397.72:156.98:26-0.28:320.55:358:04Full Moon2Mon
3Tue2:247.72:576.99:07-0.19:140.55:368:02Full Moon3Tue
4Wed3:057.53:357.09:440.09:540.55:378:01Waning Gibbous4Wed
5Thu3:447.44:117.010:190.110:330.65:388:00Waning Gibbous5Thu
6Fri4:227.14:476.910:540.311:120.75:397:59Waning Gibbous6Fri
7Sat5:006.95:256.911:300.511:540.85:407:57Waning Gibbous7Sat
8Sun5:426.66:046.812:080.75:427:56Third Quarter8Sun
9Mon6:266.36:476.712:380.912:490.95:437:55Third Quarter9Mon
10Tue7:146.17:336.71:251.01:341.15:447:53Third Quarter10Tue
11Wed8:065.98:246.72:161.12:231.35:457:52Third Quarter11Wed
12Thu9:025.89:196.83:111.13:161.35:467:50Waning Crescent12Thu
13Fri10:025.910:167.04:100.94:141.25:477:49Waning Crescent13Fri
14Sat11:006.111:127.45:080.75:120.95:487:47Waning Crescent14Sat
15Sun11:536.56:020.36:070.65:497:46Waning Crescent15Sun
16Mon12:057.712:426.96:51-0.26:590.15:507:44New Moon16Mon
17Tue12:558.11:307.47:39-0.67:50-0.35:517:43New Moon17Tue
18Wed1:458.42:187.88:26-0.98:42-0.65:527:41New Moon18Wed
19Thu2:368.53:068.19:13-1.09:33-0.85:547:40Waxing Crescent19Thu
20Fri3:268.53:548.310:00-1.110:25-0.95:557:38Waxing Crescent20Fri
21Sat4:188.34:438.410:49-0.911:19-0.85:567:37Waxing Crescent21Sat
22Sun5:127.95:368.311:40-0.65:577:35Waxing Crescent22Sun
23Mon6:107.56:348.012:16-0.612:35-0.25:587:33First Quarter23Mon
24Tue7:127.17:357.81:17-0.31:340.25:597:32First Quarter24Tue
25Wed8:176.88:397.52:220.02:370.56:007:30First Quarter25Wed
26Thu9:246.59:457.43:300.23:430.76:017:29Waxing Gibbous26Thu
27Fri10:306.510:497.44:380.34:500.86:027:27Waxing Gibbous27Fri
28Sat11:306.611:467.45:400.25:510.76:037:25Waxing Gibbous28Sat
29Sun12:236.76:340.26:440.66:047:23Waxing Gibbous29Sun
30Mon12:367.41:096.87:210.17:310.56:067:22Full Moon30Mon
31Tue1:227.41:507.08:020.18:130.46:077:20Full Moon31Tue
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 6:38 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 transitional phase. Tonight's moon is 71% 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 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 Waxing Gibbous (71% illuminated). This places Squamscott River, Great Bay, 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