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 5h 45m 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 - Oct 2077

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:418.21:127.97:20-0.77:41-0.76:416:24Full Moon1Fri
2Sat1:348.42:018.48:08-0.98:33-1.16:436:22Full Moon2Sat
3Sun2:278.52:498.68:57-1.09:25-1.36:446:20Waning Gibbous3Sun
4Mon3:198.33:388.69:45-0.810:18-1.26:456:18Waning Gibbous4Mon
5Tue4:128.04:288.510:35-0.511:11-1.06:466:17Waning Gibbous5Tue
6Wed5:077.65:218.111:27-0.16:476:15Waning Gibbous6Wed
7Thu6:057.16:197.712:08-0.612:230.46:486:13Third Quarter7Thu
8Fri7:086.77:227.31:10-0.21:250.86:506:11Third Quarter8Fri
9Sat8:136.48:287.02:150.22:301.16:516:10Third Quarter9Sat
10Sun9:196.39:346.93:210.53:381.26:526:08Third Quarter10Sun
11Mon10:216.310:366.94:270.64:441.26:536:06Waning Crescent11Mon
12Tue11:166.511:316.95:250.65:411.06:546:05Waning Crescent12Tue
13Wed12:036.76:140.56:300.86:556:03Waning Crescent13Wed
14Thu12:187.012:446.96:560.47:130.66:576:01Waning Crescent14Thu
15Fri1:007.01:217.07:330.47:520.46:586:00New Moon15Fri
16Sat1:407.01:567.28:070.48:280.36:595:58New Moon16Sat
17Sun2:177.02:287.28:390.59:020.27:005:56New Moon17Sun
18Mon2:526.92:597.29:100.69:360.27:015:55New Moon18Mon
19Tue3:276.73:317.29:420.810:100.27:035:53Waxing Crescent19Tue
20Wed4:026.64:047.210:160.910:470.37:045:52Waxing Crescent20Wed
21Thu4:406.44:417.110:541.111:280.47:055:50Waxing Crescent21Thu
22Fri5:216.25:247.011:361.27:065:49Waxing Crescent22Fri
23Sat6:096.16:146.912:150.512:251.37:075:47First Quarter23Sat
24Sun7:046.07:126.91:080.61:201.37:095:46First Quarter24Sun
25Mon8:046.18:157.02:060.62:211.27:105:44First Quarter25Mon
26Tue9:076.39:217.13:070.53:261.07:115:43Waxing Gibbous26Tue
27Wed10:086.710:267.44:090.34:320.67:125:41Waxing Gibbous27Wed
28Thu11:057.311:277.75:09-0.15:340.17:145:40Waxing Gibbous28Thu
29Fri11:577.86:03-0.46:31-0.57:155:39Waxing Gibbous29Fri
30Sat12:237.912:478.36:54-0.67:24-1.07:165:37Full Moon30Sat
31Sun1:178.11:368.67:43-0.78:16-1.37:185:36Full Moon31Sun
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