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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 3:44 am (0.8 ft)
Next high tide : in 3h 19m at 8:53 pm (7.0 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:24 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:197.87:087.012:240.21:07-0.45:377:44Third Quarter1Sun
2Mon7:227.48:106.81:280.62:090.05:357:45Third Quarter2Mon
3Tue8:277.09:116.82:330.83:110.35:347:46Third Quarter3Tue
4Wed9:316.810:106.83:400.94:120.55:337:47Waning Crescent4Wed
5Thu10:326.711:036.94:440.85:080.65:317:48Waning Crescent5Thu
6Fri11:286.611:517.15:410.65:580.75:307:50Waning Crescent6Fri
7Sat12:176.66:310.56:420.75:297:51Waning Crescent7Sat
8Sun12:337.21:016.77:150.37:220.75:277:52New Moon8Sun
9Mon1:127.31:436.77:550.27:580.75:267:53New Moon9Mon
10Tue1:497.42:226.78:320.18:340.85:257:54New Moon10Tue
11Wed2:247.42:596.79:070.19:080.85:247:55New Moon11Wed
12Thu2:597.43:366.69:420.19:430.95:237:56New Moon12Thu
13Fri3:337.44:126.510:170.110:200.95:227:57Waxing Crescent13Fri
14Sat4:097.34:496.510:540.111:001.05:217:58Waxing Crescent14Sat
15Sun4:487.25:306.511:340.211:431.05:207:59Waxing Crescent15Sun
16Mon5:317.26:146.512:180.25:198:00Waxing Crescent16Mon
17Tue6:197.17:036.612:311.01:060.35:188:02First Quarter17Tue
18Wed7:137.07:556.81:250.91:560.35:178:03First Quarter18Wed
19Thu8:107.08:507.12:210.82:500.25:168:04First Quarter19Thu
20Fri9:117.09:467.53:220.53:470.15:158:05Waxing Gibbous20Fri
21Sat10:157.110:437.94:250.24:450.05:148:06Waxing Gibbous21Sat
22Sun11:177.311:398.35:26-0.35:42-0.25:138:07Waxing Gibbous22Sun
23Mon12:157.56:24-0.76:37-0.35:128:08Full Moon23Mon
24Tue12:328.61:127.77:19-1.17:31-0.55:118:08Full Moon24Tue
25Wed1:268.82:087.88:14-1.38:25-0.55:118:09Full Moon25Wed
26Thu2:198.93:037.89:08-1.49:19-0.45:108:10Full Moon26Thu
27Fri3:138.83:577.710:01-1.310:13-0.25:098:11Waning Gibbous27Fri
28Sat4:068.64:517.510:54-1.011:080.05:098:12Waning Gibbous28Sat
29Sun5:018.25:467.311:48-0.75:088:13Waning Gibbous29Sun
30Mon5:577.76:437.112:050.312:43-0.35:078:14Third Quarter30Mon
31Tue6:567.37:407.01:050.61:390.15:078:15Third Quarter31Tue
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 12:18 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 transitional phase. Tonight's moon is 62% 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 First Quarter (62% 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