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

TIDE TIMES for Sunday, July 19, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 12:19 pm (-0.2 ft)
Next high tide : in 4h 12m at 5:41 am (7.6 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:21 am
Moon phase : First Quarter (32% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jul 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:248.72:067.68:13-1.18:23-0.45:088:26Full Moon1Mon
2Tue2:188.83:007.89:05-1.39:18-0.55:088:26Full Moon2Tue
3Wed3:128.93:547.99:58-1.310:13-0.55:098:26Waning Gibbous3Wed
4Thu4:078.74:488.010:50-1.311:09-0.45:108:26Waning Gibbous4Thu
5Fri5:038.55:447.911:44-1.05:108:25Waning Gibbous5Fri
6Sat6:018.16:417.812:08-0.312:40-0.75:118:25Third Quarter6Sat
7Sun7:027.67:397.71:10-0.11:37-0.45:128:25Third Quarter7Sun
8Mon8:047.28:387.62:130.12:350.05:128:24Third Quarter8Mon
9Tue9:086.99:377.53:180.23:350.45:138:24Waning Crescent9Tue
10Wed10:116.610:357.54:220.34:350.65:148:23Waning Crescent10Wed
11Thu11:116.511:297.45:240.35:320.75:158:23Waning Crescent11Thu
12Fri12:066.56:190.26:240.85:158:22Waning Crescent12Fri
13Sat12:187.512:556.57:080.17:110.85:168:22New Moon13Sat
14Sun1:037.51:406.67:520.17:540.85:178:21New Moon14Sun
15Mon1:467.52:216.68:330.18:340.85:188:20New Moon15Mon
16Tue2:257.53:006.79:100.19:120.85:198:20New Moon16Tue
17Wed3:037.43:376.79:450.19:480.85:208:19New Moon17Wed
18Thu3:397.34:126.710:180.110:250.85:218:18Waxing Crescent18Thu
19Fri4:157.24:476.810:520.211:030.85:218:17Waxing Crescent19Fri
20Sat4:527.15:236.811:280.311:440.85:228:17Waxing Crescent20Sat
21Sun5:316.96:026.812:060.45:238:16Waxing Crescent21Sun
22Mon6:146.76:446.912:280.812:470.55:248:15First Quarter22Mon
23Tue7:026.67:297.01:150.81:320.55:258:14First Quarter23Tue
24Wed7:536.58:197.22:070.72:220.65:268:13First Quarter24Wed
25Thu8:506.49:147.43:020.63:150.65:278:12Waxing Gibbous25Thu
26Fri9:516.510:137.74:020.44:140.55:288:11Waxing Gibbous26Fri
27Sat10:546.711:138.05:040.05:150.35:298:10Waxing Gibbous27Sat
28Sun11:547.06:03-0.46:130.05:308:09Waxing Gibbous28Sun
29Mon12:108.412:517.46:59-0.87:10-0.35:318:08Full Moon29Mon
30Tue1:068.71:467.77:53-1.18:06-0.65:328:07Full Moon30Tue
31Wed2:028.82:418.08:46-1.39:02-0.85:338:06Full Moon31Wed
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 9:00 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 32% 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 (32% 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