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

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 3h 31m at 9:04 pm (-0.1 ft)
Next high tide (tomorrow) : 3:00 am (8.6 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:18 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jul 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:137.07:477.31:280.61:490.25:088:26Third Quarter1Tue
2Wed8:096.98:407.52:230.52:410.25:098:26Third Quarter2Wed
3Thu9:106.89:387.83:220.33:380.25:098:26Waning Crescent3Thu
4Fri10:146.910:388.14:250.04:380.15:108:26Waning Crescent4Fri
5Sat11:187.111:378.45:28-0.35:390.05:118:25Waning Crescent5Sat
6Sun12:197.36:27-0.76:37-0.25:118:25New Moon6Sun
7Mon12:358.61:177.57:24-1.07:34-0.45:128:25New Moon7Mon
8Tue1:318.82:137.78:19-1.28:30-0.45:138:24New Moon8Tue
9Wed2:268.83:077.89:13-1.39:26-0.55:138:24New Moon9Wed
10Thu3:218.74:007.810:05-1.210:20-0.45:148:23Waxing Crescent10Thu
11Fri4:148.44:527.810:56-1.011:14-0.25:158:23Waxing Crescent11Fri
12Sat5:078.15:447.611:47-0.65:168:22Waxing Crescent12Sat
13Sun6:027.66:387.412:100.112:39-0.25:168:22First Quarter13Sun
14Mon6:587.17:317.31:080.31:310.25:178:21First Quarter14Mon
15Tue7:556.78:247.12:060.62:230.55:188:20First Quarter15Tue
16Wed8:526.49:187.03:050.73:170.95:198:20First Quarter16Wed
17Thu9:516.210:127.04:050.84:131.15:208:19Waxing Gibbous17Thu
18Fri10:496.111:047.05:030.85:081.25:218:18Waxing Gibbous18Fri
19Sat11:416.211:527.15:560.75:581.15:228:18Waxing Gibbous19Sat
20Sun12:296.36:430.56:431.15:238:17Waxing Gibbous20Sun
21Mon12:377.21:136.47:260.47:250.95:248:16Full Moon21Mon
22Tue1:187.31:546.58:050.28:040.85:258:15Full Moon22Tue
23Wed1:587.42:336.78:410.18:420.75:268:14Full Moon23Wed
24Thu2:357.53:096.89:160.09:210.65:278:13Full Moon24Thu
25Fri3:127.53:456.99:51-0.19:590.55:288:12Waning Gibbous25Fri
26Sat3:497.54:207.110:27-0.110:400.45:298:11Waning Gibbous26Sat
27Sun4:287.54:597.211:05-0.111:240.35:308:10Waning Gibbous27Sun
28Mon5:117.45:417.311:47-0.15:318:09Waning Gibbous28Mon
29Tue5:587.26:287.512:120.312:320.05:328:08Third Quarter29Tue
30Wed6:517.07:207.61:040.21:230.15:338:07Third Quarter30Wed
31Thu7:496.98:167.72:000.22:170.25:348:06Third Quarter31Thu
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 12:02 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 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