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

TIDE TIMES for Saturday, August 15, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 10:14 am (-0.6 ft)
Next high tide : in 57m at 3:36 am (8.1 ft)
Sunset today : 7:46 pm
Sunrise tomorrow : 5:49 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jul 1956

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:226.57:526.91:371.01:530.75:088:26Third Quarter1Sun
2Mon8:156.48:417.12:290.92:410.75:088:26Third Quarter2Mon
3Tue9:116.39:357.43:240.73:350.75:098:26Waning Crescent3Tue
4Wed10:126.410:317.74:240.44:320.65:098:26Waning Crescent4Wed
5Thu11:136.611:288.05:230.15:300.45:108:25Waning Crescent5Thu
6Fri12:116.96:21-0.36:270.15:118:25New Moon6Fri
7Sat12:248.41:077.27:16-0.77:23-0.15:118:25New Moon7Sat
8Sun1:198.72:037.58:10-1.08:19-0.35:128:24New Moon8Sun
9Mon2:158.82:577.79:03-1.29:15-0.55:138:24New Moon9Mon
10Tue3:108.83:507.99:55-1.310:10-0.55:138:23Waxing Crescent10Tue
11Wed4:058.74:438.010:47-1.211:07-0.55:148:23Waxing Crescent11Wed
12Thu5:008.35:388.011:39-0.95:158:22Waxing Crescent12Thu
13Fri5:587.96:337.912:05-0.312:33-0.65:168:22First Quarter13Fri
14Sat6:587.47:307.71:06-0.11:29-0.25:178:21First Quarter14Sat
15Sun7:597.08:277.52:080.12:250.35:178:21First Quarter15Sun
16Mon9:016.69:257.43:110.33:240.65:188:20First Quarter16Mon
17Tue10:046.410:237.34:150.44:240.95:198:19Waxing Gibbous17Tue
18Wed11:046.311:187.35:170.45:221.05:208:18Waxing Gibbous18Wed
19Thu11:596.36:120.46:151.05:218:18Waxing Gibbous19Thu
20Fri12:087.312:476.37:010.37:021.05:228:17Waxing Gibbous20Fri
21Sat12:547.31:326.47:440.27:440.95:238:16Full Moon21Sat
22Sun1:367.42:136.58:240.28:240.95:248:15Full Moon22Sun
23Mon2:167.42:516.69:000.29:020.85:258:14Full Moon23Mon
24Tue2:537.43:266.79:340.19:380.85:268:13Full Moon24Tue
25Wed3:287.34:006.810:060.210:140.75:278:12Waning Gibbous25Wed
26Thu4:037.24:336.810:390.210:520.75:288:11Waning Gibbous26Thu
27Fri4:397.15:076.911:130.311:320.75:298:10Waning Gibbous27Fri
28Sat5:186.95:457.011:500.45:308:09Waning Gibbous28Sat
29Sun6:016.76:267.112:150.712:310.55:318:08Third Quarter29Sun
30Mon6:496.67:137.21:030.61:170.65:328:07Third Quarter30Mon
31Tue7:416.48:057.31:550.62:070.65:338:06Third Quarter31Tue
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 6:55 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 11% 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 (11% 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