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

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 1:36 am (0.3 ft)
Next high tide : in 4h 23m at 6:52 pm (7.4 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 5:38 am
Moon phase : Third Quarter (55% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 1971

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:477.17:386.312:521.01:400.45:377:43First Quarter1Sat
2Sun7:486.78:376.21:551.32:390.75:367:44First Quarter2Sun
3Mon8:506.59:356.22:581.43:370.95:347:46First Quarter3Mon
4Tue9:516.410:296.44:021.44:330.95:337:47Waxing Gibbous4Tue
5Wed10:486.311:166.65:021.25:231.05:327:48Waxing Gibbous5Wed
6Thu11:386.411:586.85:541.06:070.95:307:49Waxing Gibbous6Thu
7Fri12:246.46:390.76:460.95:297:50Waxing Gibbous7Fri
8Sat12:377.01:076.57:190.57:220.95:287:51Full Moon8Sat
9Sun1:137.21:476.57:570.37:570.95:277:52Full Moon9Sun
10Mon1:487.32:256.58:330.18:330.95:267:53Full Moon10Mon
11Tue2:237.43:036.59:090.19:090.95:247:55Full Moon11Tue
12Wed2:597.43:416.59:460.09:481.05:237:56Waning Gibbous12Wed
13Thu3:377.54:206.410:260.010:291.05:227:57Waning Gibbous13Thu
14Fri4:187.55:036.411:090.011:141.05:217:58Waning Gibbous14Fri
15Sat5:037.45:516.411:560.15:207:59Waning Gibbous15Sat
16Sun5:557.46:456.512:051.012:470.15:198:00Third Quarter16Sun
17Mon6:527.37:416.71:010.91:410.15:188:01Third Quarter17Mon
18Tue7:537.28:387.02:020.82:370.15:178:02Third Quarter18Tue
19Wed8:567.19:367.33:060.63:350.15:168:03Waning Crescent19Wed
20Thu10:027.110:347.74:110.34:340.15:158:04Waning Crescent20Thu
21Fri11:057.211:298.15:15-0.15:310.05:148:05Waning Crescent21Fri
22Sat12:057.36:14-0.56:250.05:138:06Waning Crescent22Sat
23Sun12:218.31:017.47:09-0.87:180.05:128:07New Moon23Sun
24Mon1:128.51:557.38:02-1.08:090.05:128:08New Moon24Mon
25Tue2:038.52:487.38:54-1.09:000.25:118:09New Moon25Tue
26Wed2:538.43:397.19:44-0.99:500.45:108:10Waxing Crescent26Wed
27Thu3:438.14:296.910:34-0.610:400.65:108:11Waxing Crescent27Thu
28Fri4:337.85:206.711:24-0.311:320.95:098:12Waxing Crescent28Fri
29Sat5:247.46:126.612:150.15:088:13Waxing Crescent29Sat
30Sun6:177.17:056.512:261.11:060.45:088:13First Quarter30Sun
31Mon7:126.77:566.41:221.31:570.75:078:14First Quarter31Mon
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 10:14 pm — 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 neap phase. Tonight's moon is 55% 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 minimum.

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 Third Quarter (55% illuminated). This places Squamscott River, Great Bay, NH in a neap tide cycle, so tidal ranges are near their weekly minimum 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