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

TIDE TIMES for Thursday, June 18, 2026
The tide is currently falling in Squamscott River, Great Bay, NH.
Next low tide : in 52m at 10:59 am (-0.9 ft)
Next high tide : 4:55 pm (7.3 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:03 am
Moon phase : Waxing Crescent (17% illuminated)
Tide Station Location : Station #8422687
Common Questions About Tides

Squamscott River, Great Bay, NH Tides - May 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:217.72:537.09:02-0.39:080.55:367:44New Moon1Sun
2Mon2:587.63:336.89:41-0.29:450.75:357:45New Moon2Mon
3Tue3:337.54:126.610:19-0.110:221.05:347:46Waxing Crescent3Tue
4Wed4:107.34:526.410:580.111:001.25:327:48Waxing Crescent4Wed
5Thu4:487.15:356.211:380.411:421.45:317:49Waxing Crescent5Thu
6Fri5:316.86:226.012:230.65:307:50Waxing Crescent6Fri
7Sat6:196.67:125.912:281.61:110.85:287:51First Quarter7Sat
8Sun7:116.58:045.91:191.72:010.95:277:52First Quarter8Sun
9Mon8:066.48:566.02:131.72:531.05:267:53First Quarter9Mon
10Tue9:026.49:486.23:101.63:460.95:257:54First Quarter10Tue
11Wed10:006.510:376.64:091.34:370.75:247:55Waxing Gibbous11Wed
12Thu10:546.711:227.15:050.95:260.55:237:56Waxing Gibbous12Thu
13Fri11:456.95:560.46:120.35:217:58Waxing Gibbous13Fri
14Sat12:067.612:347.26:44-0.16:570.15:207:59Full Moon14Sat
15Sun12:498.01:237.37:32-0.67:42-0.15:198:00Full Moon15Sun
16Mon1:348.42:137.58:20-0.98:30-0.15:188:01Full Moon16Mon
17Tue2:218.63:047.59:10-1.19:19-0.15:178:02Full Moon17Tue
18Wed3:108.63:567.410:01-1.210:100.05:168:03Waning Gibbous18Wed
19Thu4:028.54:517.210:54-1.011:050.25:158:04Waning Gibbous19Thu
20Fri4:588.35:507.111:51-0.85:158:05Waning Gibbous20Fri
21Sat5:598.06:546.912:040.412:52-0.55:148:06Third Quarter21Sat
22Sun7:047.67:586.91:090.61:55-0.25:138:07Third Quarter22Sun
23Mon8:127.39:016.92:170.82:580.15:128:08Third Quarter23Mon
24Tue9:197.110:027.13:270.84:010.25:118:09Waning Crescent24Tue
25Wed10:246.910:587.24:350.75:000.45:118:10Waning Crescent25Wed
26Thu11:246.811:487.45:360.45:530.55:108:11Waning Crescent26Thu
27Fri12:176.86:300.26:400.65:098:11Waning Crescent27Fri
28Sat12:337.51:066.77:180.07:230.75:098:12New Moon28Sat
29Sun1:157.61:516.78:020.08:040.85:088:13New Moon29Sun
30Mon1:547.52:336.68:430.08:420.95:078:14New Moon30Mon
31Tue2:327.53:136.59:210.09:201.15:078:15New Moon31Tue
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 1:57 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 spring phase. Tonight's moon is 17% 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 Crescent (17% 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