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

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 1:08 am (0.8 ft)
Next high tide : in 1h 40m at 6:40 pm (6.9 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:11 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Sep 2058

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:028.212:447.26:52-0.67:03-0.26:087:18Full Moon1Sun
2Mon1:008.51:387.67:46-0.97:59-0.56:097:16Full Moon2Mon
3Tue1:558.62:307.98:37-1.08:54-0.76:107:14Full Moon3Tue
4Wed2:498.63:208.19:27-1.09:47-0.86:117:13Waning Gibbous4Wed
5Thu3:418.44:088.110:15-0.810:39-0.76:127:11Waning Gibbous5Thu
6Fri4:338.04:578.011:03-0.511:33-0.46:147:09Waning Gibbous6Fri
7Sat5:267.55:487.711:530.06:157:07Waning Gibbous7Sat
8Sun6:227.06:417.412:28-0.112:450.46:167:06Third Quarter8Sun
9Mon7:216.67:377.11:260.21:400.96:177:04Third Quarter9Mon
10Tue8:216.28:366.82:270.52:381.26:187:02Third Quarter10Tue
11Wed9:236.09:376.73:300.83:401.46:197:00Third Quarter11Wed
12Thu10:246.010:376.74:330.84:421.46:206:59Waning Crescent12Thu
13Fri11:196.111:306.95:310.85:381.36:216:57Waning Crescent13Fri
14Sat12:086.36:210.66:271.16:226:55Waning Crescent14Sat
15Sun12:177.012:506.57:030.57:090.96:236:53Waning Crescent15Sun
16Mon12:597.21:296.77:410.37:480.76:246:51New Moon16Mon
17Tue1:387.32:056.98:150.38:240.56:266:49New Moon17Tue
18Wed2:157.32:387.08:480.29:000.46:276:48New Moon18Wed
19Thu2:517.33:107.29:190.29:350.26:286:46New Moon19Thu
20Fri3:267.23:427.39:520.210:120.26:296:44Waxing Crescent20Fri
21Sat4:027.14:167.410:270.310:520.16:306:42Waxing Crescent21Sat
22Sun4:416.94:547.411:050.411:350.16:316:40Waxing Crescent22Sun
23Mon5:256.75:387.411:490.66:326:39First Quarter23Mon
24Tue6:156.56:297.312:250.212:380.86:336:37First Quarter24Tue
25Wed7:136.47:287.31:200.31:340.96:346:35First Quarter25Wed
26Thu8:176.38:337.32:210.32:360.96:356:33First Quarter26Thu
27Fri9:256.49:427.43:270.33:430.86:376:31Waxing Gibbous27Fri
28Sat10:326.610:507.74:350.14:520.66:386:30Waxing Gibbous28Sat
29Sun11:337.111:518.05:39-0.25:560.16:396:28Waxing Gibbous29Sun
30Mon12:287.56:35-0.56:53-0.36:406:26Full Moon30Mon
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 9:54 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 62% 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 Third Quarter (62% 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