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

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 37m at 11:23 pm (0.0 ft)
Next high tide (tomorrow) : 5:14 am (7.3 ft)
Sunset today : 7:44 pm
Sunrise tomorrow : 5:50 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Feb 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:426.72:487.18:590.59:230.16:584:55Waning Gibbous1Sun
2Mon3:156.73:236.99:350.59:550.26:574:57Waning Gibbous2Mon
3Tue3:476.73:596.610:120.610:280.46:564:58Waning Gibbous3Tue
4Wed4:216.74:386.410:510.611:050.66:554:59Waning Gibbous4Wed
5Thu4:586.65:226.111:340.711:460.96:545:01Third Quarter5Thu
6Fri5:406.66:115.812:220.86:535:02Third Quarter6Fri
7Sat6:286.67:065.712:321.11:150.86:515:03Third Quarter7Sat
8Sun7:226.68:085.61:241.22:150.86:505:05Third Quarter8Sun
9Mon8:236.89:145.72:231.23:200.66:495:06Waning Crescent9Mon
10Tue9:277.110:176.03:271.04:240.36:485:07Waning Crescent10Tue
11Wed10:297.511:136.54:300.75:21-0.26:465:09Waning Crescent11Wed
12Thu11:257.95:280.26:13-0.76:455:10New Moon12Thu
13Fri12:057.012:188.36:23-0.37:03-1.16:445:11New Moon13Fri
14Sat12:557.51:118.57:16-0.77:51-1.36:425:13New Moon14Sat
15Sun1:447.92:028.68:08-1.08:38-1.46:415:14Waxing Crescent15Sun
16Mon2:318.22:538.49:00-1.29:26-1.26:395:15Waxing Crescent16Mon
17Tue3:198.33:448.09:52-1.110:14-0.96:385:17Waxing Crescent17Tue
18Wed4:098.24:397.510:46-0.911:05-0.46:365:18Waxing Crescent18Wed
19Thu5:017.95:387.011:44-0.56:355:19First Quarter19Thu
20Fri5:587.56:416.512:000.112:46-0.16:335:21First Quarter20Fri
21Sat7:007.27:486.11:000.61:520.26:325:22First Quarter21Sat
22Sun8:066.98:575.92:041.03:030.56:305:23Waxing Gibbous22Sun
23Mon9:146.810:025.93:141.24:110.56:295:24Waxing Gibbous23Mon
24Tue10:166.810:596.14:211.15:100.46:275:26Waxing Gibbous24Tue
25Wed11:106.911:466.35:171.05:590.36:265:27Waxing Gibbous25Wed
26Thu11:567.06:060.86:410.26:245:28Waxing Gibbous26Thu
27Fri12:286.512:387.16:480.67:180.16:225:30Full Moon27Fri
28Sat1:056.71:167.17:260.47:510.16:215:31Full Moon28Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

Show All
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 2:18 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 18% 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 (18% 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