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

TIDE TIMES for Saturday, August 8, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 5h 37m at 3:47 pm (0.7 ft)
Next high tide : 9:49 pm (7.7 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:42 am
Moon phase : Waning Crescent (22% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Apr 1967

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:577.46:516.412:020.612:510.05:266:09Third Quarter1Sat
2Sun7:037.07:596.11:061.01:590.45:246:10Third Quarter2Sun
3Mon8:136.89:076.12:151.23:090.65:226:11Third Quarter3Mon
4Tue9:216.710:086.23:271.34:150.65:216:12Waning Crescent4Tue
5Wed10:226.711:006.44:311.15:090.55:196:13Waning Crescent5Wed
6Thu11:146.811:446.75:250.95:550.45:176:14Waning Crescent6Thu
7Fri11:586.96:110.66:340.45:156:16Waning Crescent7Fri
8Sat12:236.912:396.96:520.47:090.45:146:17New Moon8Sat
9Sun12:587.01:176.97:290.37:410.45:126:18New Moon9Sun
10Mon1:307.11:536.88:030.28:120.55:106:19New Moon10Mon
11Tue2:017.22:276.78:370.18:420.75:086:20New Moon11Tue
12Wed2:317.23:016.69:100.19:150.85:076:21Waxing Crescent12Wed
13Thu3:027.13:376.49:450.29:491.05:056:23Waxing Crescent13Thu
14Fri3:367.04:156.210:230.310:281.25:036:24Waxing Crescent14Fri
15Sat4:156.95:006.011:060.511:131.35:026:25Waxing Crescent15Sat
16Sun5:016.85:515.911:560.65:006:26First Quarter16Sun
17Mon5:556.86:485.912:041.412:510.64:596:27First Quarter17Mon
18Tue6:566.87:496.01:021.41:510.64:576:28First Quarter18Tue
19Wed8:016.98:526.32:051.22:530.44:556:29Waxing Gibbous19Wed
20Thu9:077.19:516.93:120.93:540.14:546:31Waxing Gibbous20Thu
21Fri10:107.410:447.44:160.44:50-0.24:526:32Waxing Gibbous21Fri
22Sat11:077.711:348.05:15-0.25:41-0.54:516:33Waxing Gibbous22Sat
23Sun12:028.06:09-0.86:30-0.74:496:34Full Moon23Sun
24Mon12:238.512:558.17:02-1.27:19-0.74:476:35Full Moon24Mon
25Tue1:118.71:478.07:54-1.48:08-0.64:466:36Full Moon25Tue
26Wed2:008.82:407.88:45-1.48:57-0.44:446:38Waning Gibbous26Wed
27Thu2:498.63:327.59:37-1.29:480.04:436:39Waning Gibbous27Thu
28Fri3:408.34:287.110:31-0.810:420.44:426:40Waning Gibbous28Fri
29Sat4:357.85:286.711:28-0.411:410.84:406:41Third Quarter29Sat
30Sun6:357.47:306.41:300.15:397:42Third Quarter30Sun
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 6:48 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 22% 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 Waning Crescent (22% 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