Nearby Harbors
43.0533’ N, 70.9133’ W

Squamscott River, Great Bay, NH

79°
H -°
L 61°
S
7mph
High tide
5:43 pm
Photo Credits

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Squamscott River, Great Bay, NH.
Next low tide (tomorrow) : 12:30 am (0.6 ft)
Next high tide : in 31m at 5:43 pm (7.1 ft)
Sunset today : 6:52 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

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Squamscott River, Great Bay, NH Tides - Feb 1942

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:146.61:187.57:250.47:58-0.36:594:55Full Moon1Sun
2Mon1:506.81:557.68:030.28:33-0.46:584:56Full Moon2Mon
3Tue2:267.02:337.68:420.09:10-0.56:574:58Waning Gibbous3Tue
4Wed3:027.13:127.69:23-0.19:49-0.56:554:59Waning Gibbous4Wed
5Thu3:407.33:557.510:06-0.110:31-0.56:545:00Waning Gibbous5Thu
6Fri4:237.34:437.310:54-0.211:18-0.36:535:02Waning Gibbous6Fri
7Sat5:117.45:377.011:47-0.16:525:03Third Quarter7Sat
8Sun6:047.46:366.812:09-0.112:45-0.16:515:04Third Quarter8Sun
9Mon8:037.48:426.61:050.12:480.07:496:06Third Quarter9Mon
10Tue9:077.49:526.63:070.23:56-0.17:486:07Waning Crescent10Tue
11Wed10:147.511:016.74:130.35:05-0.37:476:08Waning Crescent11Wed
12Thu11:197.85:200.26:09-0.57:456:10Waning Crescent12Thu
13Fri12:037.012:198.06:22-0.17:06-0.87:446:11Waning Crescent13Fri
14Sat12:597.21:148.27:19-0.37:58-1.07:436:12New Moon14Sat
15Sun1:517.52:068.28:11-0.58:47-1.17:416:14New Moon15Sun
16Mon2:407.62:558.29:01-0.69:33-1.07:406:15New Moon16Mon
17Tue3:257.63:418.09:49-0.510:16-0.87:386:16Waxing Crescent17Tue
18Wed4:097.54:267.610:35-0.410:59-0.47:376:18Waxing Crescent18Wed
19Thu4:527.45:117.211:20-0.111:41-0.17:356:19Waxing Crescent19Thu
20Fri5:357.15:586.812:070.27:346:20Waxing Crescent20Fri
21Sat6:216.96:496.412:260.312:570.47:326:21First Quarter21Sat
22Sun7:096.67:426.11:120.71:500.77:316:23First Quarter22Sun
23Mon8:016.58:395.82:021.02:460.97:296:24First Quarter23Mon
24Tue8:576.39:405.72:571.33:461.07:286:25First Quarter24Tue
25Wed9:566.410:395.83:561.44:470.97:266:27Waxing Gibbous25Wed
26Thu10:526.511:326.04:551.35:420.77:256:28Waxing Gibbous26Thu
27Fri11:436.85:481.16:280.47:236:29Waxing Gibbous27Fri
28Sat12:196.312:287.06:340.87:090.17:216:30Waxing Gibbous28Sat
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 30% 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 Waxing Crescent (30% 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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