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

TIDE TIMES for Friday, July 17, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 10:39 am (-0.9 ft)
Next high tide : in 2h 41m at 3:54 am (8.4 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:417.39:277.12:480.63:250.05:367:44Third Quarter1Thu
2Fri9:497.410:307.43:550.44:29-0.15:357:45Waning Crescent2Fri
3Sat10:557.511:287.85:020.05:29-0.35:347:46Waning Crescent3Sat
4Sun11:557.76:03-0.46:25-0.45:327:48Waning Crescent4Sun
5Mon12:218.212:517.86:59-0.87:17-0.55:317:49New Moon5Mon
6Tue1:128.41:457.87:52-1.08:07-0.55:307:50New Moon6Tue
7Wed2:018.52:367.88:43-1.18:56-0.45:287:51New Moon7Wed
8Thu2:488.53:267.69:32-1.09:43-0.15:277:52Waxing Crescent8Thu
9Fri3:358.34:147.410:19-0.810:300.25:267:53Waxing Crescent9Fri
10Sat4:218.05:027.111:07-0.511:180.55:257:54Waxing Crescent10Sat
11Sun5:097.65:536.811:56-0.25:247:55Waxing Crescent11Sun
12Mon5:597.26:456.612:080.812:460.25:227:56First Quarter12Mon
13Tue6:526.97:386.41:011.11:380.55:217:58First Quarter13Tue
14Wed7:476.68:326.41:571.32:310.75:207:59First Quarter14Wed
15Thu8:446.49:256.42:551.43:240.95:198:00First Quarter15Thu
16Fri9:416.310:176.63:531.34:171.05:188:01Waxing Gibbous16Fri
17Sat10:376.311:056.84:501.25:070.95:178:02Waxing Gibbous17Sat
18Sun11:286.411:487.05:410.95:520.85:168:03Waxing Gibbous18Sun
19Mon12:146.66:260.66:340.75:158:04Waxing Gibbous19Mon
20Tue12:287.212:576.77:070.37:130.65:148:05Full Moon20Tue
21Wed1:067.51:396.87:470.07:520.55:148:06Full Moon21Wed
22Thu1:457.72:206.98:26-0.28:320.45:138:07Full Moon22Thu
23Fri2:247.93:017.09:07-0.49:140.35:128:08Full Moon23Fri
24Sat3:048.03:447.19:49-0.59:580.35:118:09Waning Gibbous24Sat
25Sun3:488.04:297.110:34-0.610:450.35:108:10Waning Gibbous25Sun
26Mon4:348.05:187.111:22-0.611:360.35:108:11Waning Gibbous26Mon
27Tue5:267.96:127.212:13-0.55:098:12Third Quarter27Tue
28Wed6:227.77:107.212:320.41:09-0.45:088:12Third Quarter28Wed
29Thu7:247.58:097.31:320.42:06-0.35:088:13Third Quarter29Thu
30Fri8:287.49:107.52:360.43:06-0.15:078:14Third Quarter30Fri
31Sat9:347.310:117.73:420.24:08-0.15:078:15Waning Crescent31Sat
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 7:16 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 14% 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 (14% 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