Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

64°
H -°
L 62°
WNW
1mph
High tide
6:23 am
Photo Credits

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

TIDE TIMES for Thursday, September 17, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 12:37 pm (1.3 ft)
Next high tide : in 5h 27m at 6:23 am (6.2 ft)
Sunset today : 6:50 pm
Sunrise tomorrow : 6:25 am
Moon phase : First Quarter (39% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - May 1941

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu4:567.15:366.411:400.311:501.05:377:44Waxing Crescent1Thu
2Fri5:377.06:216.312:240.45:357:45First Quarter2Fri
3Sat6:256.97:106.412:371.11:130.45:347:46First Quarter3Sat
4Sun7:186.98:036.51:291.12:040.45:337:47First Quarter4Sun
5Mon8:156.98:596.72:251.02:590.45:317:48First Quarter5Mon
6Tue9:177.09:577.13:250.83:570.25:307:49Waxing Gibbous6Tue
7Wed10:197.210:537.64:280.44:550.05:297:50Waxing Gibbous7Wed
8Thu11:207.511:468.15:28-0.15:51-0.35:287:52Waxing Gibbous8Thu
9Fri12:177.86:25-0.66:44-0.65:267:53Full Moon9Fri
10Sat12:388.51:128.07:19-1.17:36-0.75:257:54Full Moon10Sat
11Sun1:308.82:078.18:13-1.48:28-0.85:247:55Full Moon11Sun
12Mon2:219.03:018.19:06-1.59:20-0.75:237:56Full Moon12Mon
13Tue3:148.93:558.09:59-1.510:13-0.55:227:57Waning Gibbous13Tue
14Wed4:068.74:507.710:53-1.311:08-0.25:217:58Waning Gibbous14Wed
15Thu5:018.45:477.511:48-0.95:207:59Waning Gibbous15Thu
16Fri5:597.96:477.212:060.212:46-0.55:198:00Third Quarter16Fri
17Sat7:007.57:487.01:070.51:46-0.15:188:01Third Quarter17Sat
18Sun8:037.18:476.92:110.72:460.25:178:02Third Quarter18Sun
19Mon9:056.89:456.93:150.93:450.55:168:03Third Quarter19Mon
20Tue10:066.710:406.94:190.94:430.65:158:04Waning Crescent20Tue
21Wed11:036.611:297.15:180.85:350.75:148:05Waning Crescent21Wed
22Thu11:546.66:100.66:210.75:138:06Waning Crescent22Thu
23Fri12:137.212:406.66:550.47:020.85:128:07Waning Crescent23Fri
24Sat12:537.31:236.77:360.37:400.85:118:08New Moon24Sat
25Sun1:317.42:046.78:150.28:160.85:118:09New Moon25Sun
26Mon2:087.42:436.78:510.18:520.85:108:10New Moon26Mon
27Tue2:437.43:206.79:260.19:270.95:098:11New Moon27Tue
28Wed3:187.43:566.610:010.010:040.95:098:12Waxing Crescent28Wed
29Thu3:547.44:336.610:380.110:430.95:088:13Waxing Crescent29Thu
30Fri4:327.35:136.611:170.111:260.95:078:14Waxing Crescent30Fri
31Sat5:137.35:566.712:000.15:078:14Waxing Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8422687)

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Common Questions About Squamscott River, Great Bay, NH Tides

Collapse All
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 39% 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 (39% 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

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