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

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 1h 07m at 9:04 pm (-0.1 ft)
Next high tide (tomorrow) : 3:00 am (8.6 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 - Sep 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:556.911:167.95:01-0.15:160.26:087:18Waning Crescent1Mon
2Tue11:557.26:02-0.36:180.06:097:16Waning Crescent2Tue
3Wed12:148.112:497.56:58-0.57:13-0.26:107:14New Moon3Wed
4Thu1:098.21:407.77:48-0.68:05-0.46:127:13New Moon4Thu
5Fri2:008.12:277.88:36-0.68:55-0.56:137:11New Moon5Fri
6Sat2:488.03:127.89:20-0.59:41-0.46:147:09Waxing Crescent6Sat
7Sun3:347.83:557.710:03-0.310:27-0.26:157:07Waxing Crescent7Sun
8Mon4:187.54:377.510:450.011:120.06:167:06Waxing Crescent8Mon
9Tue5:037.15:207.311:270.411:580.36:177:04Waxing Crescent9Tue
10Wed5:506.76:067.012:120.76:187:02First Quarter10Wed
11Thu6:416.46:566.812:470.612:591.06:197:00First Quarter11Thu
12Fri7:346.17:496.61:390.91:501.36:206:58First Quarter12Fri
13Sat8:296.08:446.52:341.02:451.46:216:57First Quarter13Sat
14Sun9:275.99:416.63:321.13:421.46:226:55Waxing Gibbous14Sun
15Mon10:236.010:376.74:291.04:401.36:236:53Waxing Gibbous15Mon
16Tue11:146.311:276.95:220.85:321.16:256:51Waxing Gibbous16Tue
17Wed11:596.66:070.66:190.76:266:49Waxing Gibbous17Wed
18Thu12:127.212:406.96:480.37:010.46:276:48Full Moon18Thu
19Fri12:547.41:197.37:270.17:430.06:286:46Full Moon19Fri
20Sat1:367.61:577.68:05-0.28:25-0.36:296:44Full Moon20Sat
21Sun2:177.72:377.98:45-0.39:08-0.56:306:42Full Moon21Sun
22Mon3:007.83:188.19:27-0.49:53-0.76:316:40Waning Gibbous22Mon
23Tue3:457.84:028.210:11-0.410:41-0.76:326:38Waning Gibbous23Tue
24Wed4:327.64:498.110:58-0.311:32-0.66:336:37Waning Gibbous24Wed
25Thu5:247.45:428.011:49-0.16:346:35Third Quarter25Thu
26Fri6:237.16:427.812:28-0.412:460.26:366:33Third Quarter26Fri
27Sat7:266.97:477.61:29-0.21:480.46:376:31Third Quarter27Sat
28Sun8:336.88:547.52:340.02:540.56:386:29Third Quarter28Sun
29Mon9:416.910:037.53:420.04:040.56:396:28Waning Crescent29Mon
30Tue10:457.111:077.64:490.05:110.36:406:26Waning Crescent30Tue
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 12:02 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 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