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

TIDE TIMES for Thursday, July 30, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 9:10 am (0.2 ft)
Next high tide : in 2h 10m at 2:25 am (7.4 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:32 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jun 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:237.46:32-0.76:44-0.25:068:16Full Moon1Sat
2Sun12:388.51:197.57:27-1.07:36-0.25:068:16Full Moon2Sun
3Mon1:308.72:147.58:20-1.28:28-0.15:058:17Full Moon3Mon
4Tue2:228.73:097.49:13-1.29:210.05:058:18Full Moon4Tue
5Wed3:148.64:027.210:06-1.010:140.35:058:19Waning Gibbous5Wed
6Thu4:078.34:557.010:59-0.711:070.55:048:19Waning Gibbous6Thu
7Fri5:007.95:516.811:52-0.45:048:20Waning Gibbous7Fri
8Sat5:567.56:476.712:040.812:480.05:048:21Third Quarter8Sat
9Sun6:547.17:426.61:031.01:420.35:048:21Third Quarter9Sun
10Mon7:526.78:366.62:031.22:360.65:038:22Third Quarter10Mon
11Tue8:506.59:286.63:031.33:280.95:038:22Third Quarter11Tue
12Wed9:486.210:196.74:031.24:201.05:038:23Waning Crescent12Wed
13Thu10:446.111:056.85:011.15:091.15:038:23Waning Crescent13Thu
14Fri11:366.111:497.05:520.95:541.25:038:24Waning Crescent14Fri
15Sat12:236.26:380.76:361.25:038:24Waning Crescent15Sat
16Sun12:297.11:076.27:190.57:151.25:038:25New Moon16Sun
17Mon1:087.21:506.37:590.37:541.25:038:25New Moon17Mon
18Tue1:477.32:316.38:380.28:331.15:038:25New Moon18Tue
19Wed2:257.43:106.39:160.19:121.15:038:26New Moon19Wed
20Thu3:047.53:496.49:540.09:531.05:048:26Waxing Crescent20Thu
21Fri3:447.54:296.510:350.010:361.05:048:26Waxing Crescent21Fri
22Sat4:277.55:126.611:17-0.111:230.95:048:26Waxing Crescent22Sat
23Sun5:137.55:596.712:02-0.15:048:26Waxing Crescent23Sun
24Mon6:037.46:496.912:150.812:50-0.15:058:27First Quarter24Mon
25Tue6:597.37:407.21:100.71:410.05:058:27First Quarter25Tue
26Wed7:577.18:347.42:090.62:340.15:058:27First Quarter26Wed
27Thu8:597.09:307.73:100.43:290.15:068:27Waxing Gibbous27Thu
28Fri10:036.910:287.94:140.14:280.25:068:27Waxing Gibbous28Fri
29Sat11:086.911:258.25:17-0.25:270.25:078:27Waxing Gibbous29Sat
30Sun12:087.06:17-0.56:240.25:078:26Waxing Gibbous30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

Common Questions About Squamscott River, Great Bay, NH Tides

Show All
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 5:47 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 99% 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 Full Moon (99% 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