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

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 7:00 pm (0.2 ft)
Next high tide : in 5h 36m at 12:44 pm (6.9 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 5:45 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Dec 1961

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:576.38:136.21:550.92:231.36:554:10Third Quarter1Fri
2Sat8:496.59:096.32:470.93:201.26:564:09Waning Crescent2Sat
3Sun9:376.710:016.43:370.94:130.96:574:09Waning Crescent3Sun
4Mon10:227.010:496.54:240.85:000.56:584:09Waning Crescent4Mon
5Tue11:037.311:336.75:080.65:430.26:594:09Waning Crescent5Tue
6Wed11:437.65:490.56:24-0.27:004:09New Moon6Wed
7Thu12:166.912:237.86:300.37:06-0.57:014:08New Moon7Thu
8Fri12:597.01:058.07:130.17:49-0.77:024:08New Moon8Fri
9Sat1:437.11:488.27:570.08:34-0.87:034:08New Moon9Sat
10Sun2:287.22:358.28:44-0.19:21-0.97:044:08Waxing Crescent10Sun
11Mon3:157.33:248.29:330.010:11-0.87:054:08Waxing Crescent11Mon
12Tue4:067.24:178.010:260.011:04-0.77:054:09Waxing Crescent12Tue
13Wed5:027.25:167.711:240.17:064:09First Quarter13Wed
14Thu6:027.26:197.412:01-0.512:260.27:074:09First Quarter14Thu
15Fri7:037.27:257.21:00-0.31:320.37:084:09First Quarter15Fri
16Sat8:067.38:337.02:02-0.12:400.27:084:09Waxing Gibbous16Sat
17Sun9:077.59:397.03:050.03:480.07:094:10Waxing Gibbous17Sun
18Mon10:067.710:407.04:060.14:49-0.37:104:10Waxing Gibbous18Mon
19Tue10:597.911:357.15:030.15:44-0.57:104:10Waxing Gibbous19Tue
20Wed11:498.05:550.16:35-0.67:114:11Full Moon20Wed
21Thu12:267.112:368.06:430.17:22-0.77:114:11Full Moon21Thu
22Fri1:137.11:207.97:280.28:06-0.67:124:12Full Moon22Fri
23Sat1:587.02:027.88:110.38:48-0.57:124:12Full Moon23Sat
24Sun2:406.92:437.68:530.49:28-0.37:134:13Waning Gibbous24Sun
25Mon3:216.73:237.39:340.610:07-0.17:134:14Waning Gibbous25Mon
26Tue4:026.64:057.110:160.810:480.27:144:14Waning Gibbous26Tue
27Wed4:446.54:496.811:000.911:300.47:144:15Waning Gibbous27Wed
28Thu5:296.45:366.511:471.17:144:16Third Quarter28Thu
29Fri6:156.36:276.312:140.612:371.27:144:16Third Quarter29Fri
30Sat7:036.47:206.11:000.81:301.27:144:17Third Quarter30Sat
31Sun7:526.48:156.01:480.92:251.17:154:18Third Quarter31Sun
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 3:52 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 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