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

TIDE TIMES for Saturday, August 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 19m at 10:33 pm (-0.2 ft)
Next high tide (tomorrow) : 4:25 am (7.8 ft)
Sunset today : 7:46 pm
Sunrise tomorrow : 5:49 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:496.34:526.911:041.111:380.36:554:10First Quarter1Wed
2Thu5:366.45:446.811:561.06:564:09First Quarter2Thu
3Fri6:256.66:406.812:270.412:510.96:574:09First Quarter3Fri
4Sat7:176.97:396.71:180.31:500.66:584:09First Quarter4Sat
5Sun8:127.28:426.82:120.32:520.36:594:09Waxing Gibbous5Sun
6Mon9:087.69:456.93:090.23:54-0.17:004:09Waxing Gibbous6Mon
7Tue10:058.010:457.14:070.14:53-0.67:014:08Waxing Gibbous7Tue
8Wed10:598.411:417.35:04-0.15:50-1.07:024:08Full Moon8Wed
9Thu11:538.75:58-0.36:44-1.27:034:08Full Moon9Thu
10Fri12:377.412:478.86:52-0.47:38-1.47:034:08Full Moon10Fri
11Sat1:317.51:418.77:46-0.48:31-1.37:044:08Waning Gibbous11Sat
12Sun2:257.52:358.68:40-0.39:23-1.17:054:09Waning Gibbous12Sun
13Mon3:187.43:288.29:34-0.110:16-0.87:064:09Waning Gibbous13Mon
14Tue4:117.24:237.810:300.211:09-0.47:074:09Waning Gibbous14Tue
15Wed5:077.05:217.311:280.47:084:09Third Quarter15Wed
16Thu6:036.96:216.812:040.012:290.77:084:09Third Quarter16Thu
17Fri6:586.87:206.412:580.41:310.87:094:10Third Quarter17Fri
18Sat7:536.78:216.11:530.72:330.97:104:10Third Quarter18Sat
19Sun8:476.79:216.02:481.03:350.87:104:10Waning Crescent19Sun
20Mon9:396.810:176.03:431.14:310.77:114:11Waning Crescent20Mon
21Tue10:286.911:076.04:351.25:210.57:114:11Waning Crescent21Tue
22Wed11:137.011:526.15:211.26:050.47:124:12Waning Crescent22Wed
23Thu11:557.16:031.16:450.27:124:12New Moon23Thu
24Fri12:356.212:347.26:421.07:230.17:134:13New Moon24Fri
25Sat1:146.31:127.37:200.98:000.07:134:13New Moon25Sat
26Sun1:526.41:497.47:570.88:35-0.17:134:14New Moon26Sun
27Mon2:286.42:267.48:350.79:10-0.17:144:15Waxing Crescent27Mon
28Tue3:046.53:037.49:140.79:46-0.17:144:15Waxing Crescent28Tue
29Wed3:406.63:437.39:550.610:26-0.17:144:16Waxing Crescent29Wed
30Thu4:206.84:287.210:410.511:08-0.17:144:17Waxing Crescent30Thu
31Fri5:046.95:187.011:310.511:530.07:154:18First Quarter31Fri
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 1:29 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 11% 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 Waxing Crescent (11% 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