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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 4:45 am (0.9 ft)
Next high tide : in 1h 26m at 9:48 pm (6.8 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 - Apr 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:126.96:230.46:380.45:246:10New Moon1Wed
2Thu12:307.112:507.07:000.27:120.35:226:11New Moon2Thu
3Fri1:037.31:287.07:36-0.17:460.35:216:12New Moon3Fri
4Sat1:367.52:047.08:13-0.28:210.35:196:13New Moon4Sat
5Sun3:117.63:427.09:51-0.39:590.36:177:14Waxing Crescent5Sun
6Mon3:487.74:226.910:31-0.410:400.46:157:15Waxing Crescent6Mon
7Tue4:297.75:076.711:16-0.311:260.56:147:17Waxing Crescent7Tue
8Wed5:157.65:596.612:06-0.26:127:18Waxing Crescent8Wed
9Thu6:097.56:576.512:180.61:020.06:107:19First Quarter9Thu
10Fri7:117.38:016.51:160.72:030.16:097:20First Quarter10Fri
11Sat8:177.29:076.62:210.73:070.16:077:21First Quarter11Sat
12Sun9:277.210:136.93:290.64:130.06:057:22Waxing Gibbous12Sun
13Mon10:357.311:137.34:400.35:15-0.16:047:24Waxing Gibbous13Mon
14Tue11:387.55:44-0.16:12-0.36:027:25Waxing Gibbous14Tue
15Wed12:077.812:347.76:42-0.57:03-0.46:007:26Full Moon15Wed
16Thu12:568.11:277.77:34-0.87:51-0.45:597:27Full Moon16Thu
17Fri1:448.32:187.78:24-1.08:38-0.35:577:28Full Moon17Fri
18Sat2:308.33:067.59:12-1.09:23-0.15:557:29Full Moon18Sat
19Sun3:148.23:527.39:59-0.810:080.25:547:31Waning Gibbous19Sun
20Mon3:587.94:387.010:44-0.510:530.55:527:32Waning Gibbous20Mon
21Tue4:437.65:266.711:31-0.211:390.85:517:33Waning Gibbous21Tue
22Wed5:307.26:176.412:200.25:497:34Waning Gibbous22Wed
23Thu6:216.97:106.112:291.11:120.65:487:35Third Quarter23Thu
24Fri7:166.68:046.01:231.42:050.85:467:36Third Quarter24Fri
25Sat8:136.48:596.02:211.52:591.05:457:37Third Quarter25Sat
26Sun9:116.39:536.23:201.53:541.15:437:39Third Quarter26Sun
27Mon10:096.310:436.44:201.44:461.05:427:40Waning Crescent27Mon
28Tue11:026.311:286.75:151.15:330.95:407:41Waning Crescent28Tue
29Wed11:516.56:030.86:140.85:397:42Waning Crescent29Wed
30Thu12:097.012:356.66:460.56:530.75:377:43Waning Crescent30Thu
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 1:16 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