Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

43°
H 64°
L 45°
NNE
6mph
High tide
11:52 am
Photo Credits

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

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide : 6:09 pm (1.1 ft)
Next high tide : in 5h 05m at 11:52 am (6.3 ft)
Sunset today : 6:39 pm
Sunrise tomorrow : 6:32 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Oct 1932

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:168.11:348.47:43-0.68:12-1.15:405:25New Moon1Sat
2Sun2:058.02:208.68:29-0.69:02-1.15:425:23Waxing Crescent2Sun
3Mon2:557.83:088.59:17-0.49:54-1.05:435:22Waxing Crescent3Mon
4Tue3:487.54:008.310:08-0.110:50-0.75:445:20Waxing Crescent4Tue
5Wed4:467.14:597.911:030.311:51-0.35:455:18First Quarter5Wed
6Thu5:506.76:047.612:060.75:465:16First Quarter6Thu
7Fri6:586.57:137.312:580.11:130.95:475:15First Quarter7Fri
8Sat8:076.48:247.12:080.32:251.05:485:13Waxing Gibbous8Sat
9Sun9:146.59:317.13:170.43:351.05:505:11Waxing Gibbous9Sun
10Mon10:136.710:307.24:200.44:380.85:515:10Waxing Gibbous10Mon
11Tue11:036.911:217.25:120.35:310.55:525:08Waxing Gibbous11Tue
12Wed11:477.15:570.36:180.35:535:06Full Moon12Wed
13Thu12:077.212:277.26:370.37:000.25:545:04Full Moon13Thu
14Fri12:497.11:037.37:140.47:390.15:565:03Full Moon14Fri
15Sat1:286.91:367.37:480.68:150.15:575:01Full Moon15Sat
16Sun2:056.82:097.28:210.88:500.25:585:00Waning Gibbous16Sun
17Mon2:426.62:427.18:541.09:260.45:594:58Waning Gibbous17Mon
18Tue3:186.43:177.09:291.210:030.56:004:56Waning Gibbous18Tue
19Wed3:576.13:566.810:071.410:450.76:024:55Waning Gibbous19Wed
20Thu4:405.94:406.610:501.511:320.96:034:53Waning Gibbous20Thu
21Fri5:295.85:316.511:381.76:044:52Third Quarter21Fri
22Sat6:235.76:276.512:251.012:321.76:054:50Third Quarter22Sat
23Sun7:195.87:266.61:201.01:301.66:074:49Third Quarter23Sun
24Mon8:156.08:266.72:160.92:311.46:084:47Waning Crescent24Mon
25Tue9:106.49:257.03:120.73:320.96:094:46Waning Crescent25Tue
26Wed10:007.010:207.34:050.34:290.46:104:44Waning Crescent26Wed
27Thu10:477.611:127.64:540.05:21-0.26:124:43Waning Crescent27Thu
28Fri11:338.15:41-0.36:11-0.86:134:41New Moon28Fri
29Sat12:037.812:198.56:27-0.57:02-1.26:144:40New Moon29Sat
30Sun12:547.91:068.87:15-0.57:52-1.46:154:38New Moon30Sun
31Mon1:467.81:568.88:04-0.58:44-1.36:174:37Waxing Crescent31Mon
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 spring phase. Tonight's moon is 90% 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 Waxing Gibbous (90% 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

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