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

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 9:04 pm (-0.1 ft)
Next high tide : in 4h 05m at 2:49 pm (7.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:18 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Oct 1999

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:277.26:467.812:31-0.512:490.26:406:26Third Quarter1Fri
2Sat7:327.07:517.61:33-0.31:520.46:416:24Third Quarter2Sat
3Sun8:396.88:597.52:39-0.12:590.66:426:22Third Quarter3Sun
4Mon9:476.810:087.53:480.04:090.66:446:20Waning Crescent4Mon
5Tue10:517.011:117.54:550.05:160.56:456:19Waning Crescent5Tue
6Wed11:487.25:55-0.16:150.26:466:17Waning Crescent6Wed
7Thu12:087.612:387.46:47-0.27:070.06:476:15New Moon7Thu
8Fri12:587.71:247.57:33-0.27:54-0.16:486:13New Moon8Fri
9Sat1:457.62:067.68:16-0.18:38-0.26:496:12New Moon9Sat
10Sun2:297.52:457.68:560.09:19-0.16:516:10New Moon10Sun
11Mon3:107.33:227.59:330.29:580.06:526:08Waxing Crescent11Mon
12Tue3:497.13:587.310:090.510:360.16:536:07Waxing Crescent12Tue
13Wed4:296.84:357.210:460.711:160.46:546:05Waxing Crescent13Wed
14Thu5:106.65:156.911:261.011:580.66:556:03Waxing Crescent14Thu
15Fri5:556.36:006.712:091.26:566:02First Quarter15Fri
16Sat6:446.16:496.612:450.812:571.46:586:00First Quarter16Sat
17Sun7:376.07:436.51:360.91:491.56:595:58First Quarter17Sun
18Mon8:315.98:406.52:291.02:441.57:005:57First Quarter18Mon
19Tue9:276.19:386.63:251.03:421.47:015:55Waxing Gibbous19Tue
20Wed10:206.310:336.84:200.84:391.17:025:53Waxing Gibbous20Wed
21Thu11:096.711:257.25:120.55:330.77:045:52Waxing Gibbous21Thu
22Fri11:547.25:590.26:210.17:055:50Waxing Gibbous22Fri
23Sat12:137.512:377.76:44-0.27:08-0.47:065:49Full Moon23Sat
24Sun1:007.81:208.17:28-0.47:55-0.87:075:47Full Moon24Sun
25Mon1:488.02:058.48:13-0.68:43-1.17:095:46Full Moon25Mon
26Tue2:368.02:518.69:00-0.79:33-1.37:105:44Waning Gibbous26Tue
27Wed3:268.03:408.79:48-0.610:24-1.27:115:43Waning Gibbous27Wed
28Thu4:187.84:318.510:39-0.411:18-1.07:125:42Waning Gibbous28Thu
29Fri5:147.65:288.211:34-0.17:145:40Waning Gibbous29Fri
30Sat6:157.36:307.912:16-0.712:340.27:155:39Third Quarter30Sat
31Sun6:207.06:377.61:19-0.412:400.56:164:37Third Quarter31Sun
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 5:56 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 2% 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 New Moon (2% 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