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

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 33m at 11:29 am (0.1 ft)
Next high tide : 5:22 pm (7.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jan 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:367.112:468.16:520.07:33-0.87:154:18New Moon1Thu
2Fri1:257.21:348.17:410.08:19-0.87:154:19New Moon2Fri
3Sat2:127.12:197.98:270.09:03-0.67:154:20Waxing Crescent3Sat
4Sun2:557.13:037.69:120.29:44-0.47:154:21Waxing Crescent4Sun
5Mon3:387.03:467.39:560.410:26-0.17:154:22Waxing Crescent5Mon
6Tue4:216.84:306.910:420.611:070.27:154:23Waxing Crescent6Tue
7Wed5:056.75:186.611:290.811:510.57:144:24First Quarter7Wed
8Thu5:516.66:086.312:190.97:144:25First Quarter8Thu
9Fri6:386.57:016.012:360.81:121.07:144:26First Quarter9Fri
10Sat7:286.47:575.81:241.02:071.17:144:27First Quarter10Sat
11Sun8:206.58:565.82:161.23:061.07:144:28Waxing Gibbous11Sun
12Mon9:146.69:535.83:101.24:030.87:134:29Waxing Gibbous12Mon
13Tue10:056.810:446.04:051.14:540.57:134:31Waxing Gibbous13Tue
14Wed10:527.111:316.34:550.95:400.27:124:32Waxing Gibbous14Wed
15Thu11:377.45:410.66:23-0.27:124:33Full Moon15Thu
16Fri12:156.612:217.86:260.37:05-0.57:124:34Full Moon16Fri
17Sat12:586.91:058.07:110.07:48-0.87:114:35Full Moon17Sat
18Sun1:407.21:508.27:56-0.38:31-1.07:104:36Full Moon18Sun
19Mon2:247.52:358.28:43-0.59:15-1.17:104:38Waning Gibbous19Mon
20Tue3:087.73:238.19:32-0.610:01-1.07:094:39Waning Gibbous20Tue
21Wed3:557.84:147.910:23-0.610:50-0.87:094:40Waning Gibbous21Wed
22Thu4:467.85:107.511:18-0.511:43-0.57:084:41Third Quarter22Thu
23Fri5:417.76:117.112:18-0.37:074:43Third Quarter23Fri
24Sat6:407.67:166.812:40-0.21:22-0.17:064:44Third Quarter24Sat
25Sun7:437.58:246.61:400.12:300.07:064:45Third Quarter25Sun
26Mon8:497.49:346.52:460.33:40-0.17:054:47Waning Crescent26Mon
27Tue9:547.510:376.63:530.44:45-0.27:044:48Waning Crescent27Tue
28Wed10:537.611:346.74:560.45:42-0.47:034:49Waning Crescent28Wed
29Thu11:467.75:520.26:33-0.57:024:51New Moon29Thu
30Fri12:246.912:357.76:420.17:20-0.57:014:52New Moon30Fri
31Sat1:107.01:207.77:280.08:02-0.57:004:53New Moon31Sat
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 2:25 pm — 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 75% 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 Waning Gibbous (75% 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