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

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 2:53 pm (1.0 ft)
Next high tide : in 1h 42m at 8:32 am (6.3 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:24 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - Jun 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:168.84:027.610:06-1.310:17-0.25:068:16Waning Gibbous1Sat
2Sun4:108.74:587.511:00-1.211:140.05:068:17Waning Gibbous2Sun
3Mon5:078.45:577.411:57-0.95:068:17Waning Gibbous3Mon
4Tue6:088.06:597.212:140.212:57-0.65:058:18Third Quarter4Tue
5Wed7:127.78:017.21:180.41:58-0.35:058:19Third Quarter5Wed
6Thu8:177.39:027.22:250.62:590.05:048:20Third Quarter6Thu
7Fri9:227.010:017.23:320.64:000.35:048:20Waning Crescent7Fri
8Sat10:256.810:567.34:370.64:580.45:048:21Waning Crescent8Sat
9Sun11:246.711:467.45:370.45:510.65:048:21Waning Crescent9Sun
10Mon12:166.76:300.36:380.75:048:22Waning Crescent10Mon
11Tue12:317.51:046.77:170.17:210.85:038:23New Moon11Tue
12Wed1:137.51:486.68:000.18:010.95:038:23New Moon12Wed
13Thu1:527.52:306.68:400.08:390.95:038:24New Moon13Thu
14Fri2:307.43:106.59:180.19:161.05:038:24New Moon14Fri
15Sat3:077.43:486.59:540.19:531.15:038:24New Moon15Sat
16Sun3:437.34:256.410:300.210:311.25:038:25Waxing Crescent16Sun
17Mon4:207.25:036.411:070.311:101.25:038:25Waxing Crescent17Mon
18Tue4:597.15:446.411:460.311:531.35:048:25Waxing Crescent18Tue
19Wed5:417.06:266.412:270.45:048:26Waxing Crescent19Wed
20Thu6:276.97:106.512:391.21:110.45:048:26First Quarter20Thu
21Fri7:166.87:566.71:291.21:570.55:048:26First Quarter21Fri
22Sat8:096.78:457.02:221.02:450.55:048:26First Quarter22Sat
23Sun9:056.79:377.33:180.83:370.45:058:27Waxing Gibbous23Sun
24Mon10:056.810:307.74:160.44:320.35:058:27Waxing Gibbous24Mon
25Tue11:056.911:248.15:160.05:280.25:058:27Waxing Gibbous25Tue
26Wed12:037.16:12-0.46:220.05:068:27Waxing Gibbous26Wed
27Thu12:178.512:597.37:08-0.87:16-0.25:068:27Full Moon27Thu
28Fri1:118.71:567.58:02-1.18:11-0.35:078:27Full Moon28Fri
29Sat2:068.92:517.68:57-1.39:07-0.35:078:27Full Moon29Sat
30Sun3:018.93:477.79:51-1.310:02-0.35:088:27Waning Gibbous30Sun
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 11:42 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 62% 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 (62% 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