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

TIDE TIMES for Saturday, July 18, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 11:29 am (-0.6 ft)
Next high tide : in 2h 55m at 4:47 am (8.1 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:20 am
Moon phase : Waxing Crescent (23% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:106.610:486.64:221.14:530.75:367:45Waning Crescent1Mon
2Tue11:066.611:376.85:201.05:440.75:347:46Waning Crescent2Tue
3Wed11:566.76:110.86:290.65:337:47Waning Crescent3Wed
4Thu12:207.012:416.76:550.57:080.65:327:48Waning Crescent4Thu
5Fri12:597.11:226.87:350.37:440.65:307:49New Moon5Fri
6Sat1:357.32:026.88:120.28:180.65:297:51New Moon6Sat
7Sun2:107.42:396.88:480.18:520.65:287:52New Moon7Sun
8Mon2:437.43:166.89:230.09:270.75:277:53New Moon8Mon
9Tue3:177.53:526.79:58-0.110:040.75:257:54Waxing Crescent9Tue
10Wed3:527.54:306.710:36-0.110:430.85:247:55Waxing Crescent10Wed
11Thu4:307.45:116.611:170.011:260.85:237:56Waxing Crescent11Thu
12Fri5:147.45:586.612:030.05:227:57Waxing Crescent12Fri
13Sat6:037.36:516.612:150.912:530.05:217:58First Quarter13Sat
14Sun6:597.37:476.81:100.81:480.15:207:59First Quarter14Sun
15Mon7:597.28:467.02:090.82:450.05:198:00First Quarter15Mon
16Tue9:037.29:467.33:120.63:450.05:188:01Waxing Gibbous16Tue
17Wed10:097.310:457.74:170.34:46-0.25:178:03Waxing Gibbous17Wed
18Thu11:137.511:418.15:21-0.25:44-0.35:168:04Waxing Gibbous18Thu
19Fri12:127.76:20-0.66:38-0.55:158:05Waxing Gibbous19Fri
20Sat12:348.51:087.87:16-1.07:31-0.55:148:06Full Moon20Sat
21Sun1:258.72:037.98:09-1.28:22-0.55:138:07Full Moon21Sun
22Mon2:168.72:567.89:01-1.39:13-0.35:128:08Full Moon22Mon
23Tue3:068.73:487.69:52-1.210:04-0.15:128:08Waning Gibbous23Tue
24Wed3:568.44:397.410:43-0.910:550.25:118:09Waning Gibbous24Wed
25Thu4:468.15:327.111:34-0.611:480.55:108:10Waning Gibbous25Thu
26Fri5:397.66:276.912:27-0.25:108:11Waning Gibbous26Fri
27Sat6:347.27:226.712:430.81:210.25:098:12Third Quarter27Sat
28Sun7:316.98:166.61:411.12:150.55:088:13Third Quarter28Sun
29Mon8:286.69:106.62:401.23:090.75:088:14Third Quarter29Mon
30Tue9:266.410:036.73:401.24:030.95:078:15Third Quarter30Tue
31Wed10:236.310:526.84:381.14:550.95:078:16Waning Crescent31Wed
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 8:08 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 23% 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 Waxing Crescent (23% 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