Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

57°
H -°
L 55°
NNE
10mph
Low tide
3:24 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Saturday, November 7, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 1h 30m at 3:24 am (0.3 ft)
Next high tide : 9:43 am (8.7 ft)
Sunset today : 4:27 pm
Sunrise tomorrow : 6:25 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Jun 1812

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:128.63:598.09:33-0.29:540.74:097:19Third Quarter1Mon
2Tue4:098.54:558.210:27-0.110:540.64:097:19Third Quarter2Tue
3Wed5:108.45:538.411:24-0.111:570.44:087:20Third Quarter3Wed
4Thu6:148.36:528.712:23-0.14:087:21Waning Crescent4Thu
5Fri7:208.47:519.11:020.11:24-0.14:077:22Waning Crescent5Fri
6Sat8:238.58:479.52:05-0.32:22-0.24:077:22Waning Crescent6Sat
7Sun9:228.69:409.73:04-0.73:17-0.34:077:23New Moon7Sun
8Mon10:188.710:329.93:59-1.04:10-0.34:077:24New Moon8Mon
9Tue11:138.711:239.84:52-1.25:02-0.24:067:24New Moon9Tue
10Wed12:058.65:44-1.25:53-0.14:067:25New Moon10Wed
11Thu12:139.712:558.56:33-1.16:430.24:067:25Waxing Crescent11Thu
12Fri1:029.41:458.37:22-0.87:330.54:067:26Waxing Crescent12Fri
13Sat1:519.02:358.18:11-0.48:240.84:067:26Waxing Crescent13Sat
14Sun2:418.63:267.99:000.09:171.04:067:27Waxing Crescent14Sun
15Mon3:338.14:177.79:500.310:121.34:067:27First Quarter15Mon
16Tue4:277.85:087.610:400.611:071.44:067:28First Quarter16Tue
17Wed5:217.45:587.611:290.94:067:28First Quarter17Wed
18Thu6:177.26:497.712:041.412:201.14:067:28First Quarter18Thu
19Fri7:137.17:387.81:011.31:111.24:067:29Waxing Gibbous19Fri
20Sat8:067.18:248.01:541.11:591.24:067:29Waxing Gibbous20Sat
21Sun8:567.29:078.22:420.82:441.24:067:29Waxing Gibbous21Sun
22Mon9:427.39:488.53:260.63:261.04:077:29Waxing Gibbous22Mon
23Tue10:257.510:288.74:070.34:070.94:077:30Full Moon23Tue
24Wed11:077.611:088.94:470.04:480.84:077:30Full Moon24Wed
25Thu11:497.811:509.05:27-0.25:300.64:087:30Full Moon25Thu
26Fri12:307.96:08-0.46:140.54:087:30Waning Gibbous26Fri
27Sat12:329.11:138.16:51-0.67:000.44:087:30Waning Gibbous27Sat
28Sun1:179.11:588.27:36-0.67:490.34:097:30Waning Gibbous28Sun
29Mon2:059.12:478.48:23-0.68:420.34:097:30Waning Gibbous29Mon
30Tue2:588.93:408.59:14-0.59:390.34:107:30Third Quarter30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423745)

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Common Questions About Portsmouth, NH Tides

Collapse All
Is this week a spring tide or neap tide in Portsmouth, NH?

Portsmouth, NH is currently in a spring phase. Tonight's moon is 3% 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 Portsmouth, 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 Portsmouth, NH?

Tide predictions for Portsmouth, 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 Portsmouth, NH?

Tide data for Portsmouth, NH is sourced from NOAA Station #8423745. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8423745.

What is the moon phase in Portsmouth, NH tonight?

Tonight the moon over Portsmouth, NH is New Moon (3% illuminated). This places Portsmouth, 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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