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

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 2h 24m at 6:10 pm (0.3 ft)
Next high tide (tomorrow) : 12:08 am (8.3 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:096.91:127.87:210.47:58-0.56:554:10Full Moon1Sat
2Sun1:506.91:537.98:030.38:41-0.66:564:09Waning Gibbous2Sun
3Mon2:346.92:378.08:470.39:26-0.66:574:09Waning Gibbous3Mon
4Tue3:196.93:247.99:340.310:15-0.56:584:09Waning Gibbous4Tue
5Wed4:096.84:177.810:260.411:08-0.46:594:09Waning Gibbous5Wed
6Thu5:056.85:167.611:230.57:004:08Third Quarter6Thu
7Fri6:056.86:197.312:05-0.312:260.57:014:08Third Quarter7Fri
8Sat7:077.07:267.21:05-0.11:320.57:024:08Third Quarter8Sat
9Sun8:097.28:347.12:060.02:400.47:034:08Waning Crescent9Sun
10Mon9:107.49:407.13:080.03:480.17:044:08Waning Crescent10Mon
11Tue10:077.710:407.14:090.04:49-0.37:054:08Waning Crescent11Tue
12Wed11:007.911:367.25:040.05:45-0.57:064:09Waning Crescent12Wed
13Thu11:498.15:550.06:36-0.77:064:09New Moon13Thu
14Fri12:287.212:368.16:440.17:24-0.87:074:09New Moon14Fri
15Sat1:177.11:228.07:300.28:10-0.77:084:09New Moon15Sat
16Sun2:037.02:067.98:150.38:54-0.57:084:09New Moon16Sun
17Mon2:476.82:497.68:590.59:37-0.37:094:10Waxing Crescent17Mon
18Tue3:316.73:327.49:420.710:200.07:104:10Waxing Crescent18Tue
19Wed4:156.54:167.110:260.911:030.27:104:10Waxing Crescent19Wed
20Thu5:006.35:036.811:141.111:490.57:114:11Waxing Crescent20Thu
21Fri5:486.25:536.512:041.27:114:11First Quarter21Fri
22Sat6:376.26:466.312:350.712:571.37:124:12First Quarter22Sat
23Sun7:256.37:406.11:220.91:511.37:124:12First Quarter23Sun
24Mon8:156.48:366.02:111.02:471.27:134:13First Quarter24Mon
25Tue9:046.59:326.13:011.03:431.07:134:14Waxing Gibbous25Tue
26Wed9:516.810:246.23:511.04:340.67:134:14Waxing Gibbous26Wed
27Thu10:367.111:116.44:390.85:210.37:144:15Waxing Gibbous27Thu
28Fri11:197.411:576.65:240.76:06-0.17:144:16Waxing Gibbous28Fri
29Sat12:027.76:090.46:50-0.57:144:16Full Moon29Sat
30Sun12:436.812:478.06:540.27:36-0.77:144:17Full Moon30Sun
31Mon1:286.91:348.27:410.08:22-0.97:154:18Full Moon31Mon
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 9:09 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 spring phase. Tonight's moon is 5% 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 Waning Crescent (5% 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