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

TIDE TIMES for Friday, July 17, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 11:29 am (-0.6 ft)
Next high tide (tomorrow) : in 5h 47m at 4:47 am (8.1 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Mar 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:577.47:406.612:570.21:43-0.16:175:33Third Quarter1Wed
2Thu8:027.28:496.42:020.52:520.26:165:34Third Quarter2Thu
3Fri9:097.09:546.43:100.74:010.26:145:35Waning Crescent3Fri
4Sat10:117.010:526.54:170.75:010.16:125:37Waning Crescent4Sat
5Sun11:067.111:426.65:140.65:520.06:115:38Waning Crescent5Sun
6Mon11:547.26:040.56:370.06:095:39Waning Crescent6Mon
7Tue12:266.812:387.36:480.37:17-0.16:075:40New Moon7Tue
8Wed1:056.91:177.37:280.27:52-0.16:065:42New Moon8Wed
9Thu1:417.01:547.28:040.28:250.06:045:43New Moon9Thu
10Fri2:157.02:297.18:390.18:560.16:025:44New Moon10Fri
11Sat2:477.03:037.09:130.29:280.26:005:45Waxing Crescent11Sat
12Sun4:187.04:386.810:480.211:010.46:596:46Waxing Crescent12Sun
13Mon4:516.95:156.611:250.311:380.66:576:48Waxing Crescent13Mon
14Tue5:286.85:566.312:060.46:556:49Waxing Crescent14Tue
15Wed6:096.86:436.112:190.812:520.56:536:50First Quarter15Wed
16Thu6:566.77:366.01:051.01:430.66:526:51First Quarter16Thu
17Fri7:506.78:346.01:571.12:390.66:506:52First Quarter17Fri
18Sat8:506.89:376.12:541.03:400.56:486:54First Quarter18Sat
19Sun9:547.010:406.53:570.94:440.26:466:55Waxing Gibbous19Sun
20Mon10:577.411:387.05:010.55:43-0.26:456:56Waxing Gibbous20Mon
21Tue11:567.86:010.06:37-0.66:436:57Waxing Gibbous21Tue
22Wed12:307.512:508.26:56-0.57:28-1.06:416:58Full Moon22Wed
23Thu1:218.01:438.57:49-1.08:18-1.36:397:00Full Moon23Thu
24Fri2:108.42:368.68:42-1.49:07-1.36:387:01Full Moon24Fri
25Sat3:008.63:288.59:33-1.59:56-1.26:367:02Waning Gibbous25Sat
26Sun3:498.74:208.210:25-1.510:46-0.96:347:03Waning Gibbous26Sun
27Mon4:398.55:147.811:19-1.211:38-0.56:327:04Waning Gibbous27Mon
28Tue5:328.26:137.412:15-0.86:307:05Third Quarter28Tue
29Wed6:307.87:156.912:340.01:16-0.46:297:07Third Quarter29Wed
30Thu7:317.38:196.61:350.42:200.06:277:08Third Quarter30Thu
31Fri8:367.09:256.42:400.83:260.36:257:09Third 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 8:08 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 14% 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 (14% 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