Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

45°
H -°
L 43°
W
8mph
Low tide
5:26 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Tuesday, November 10, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 4h 11m at 5:26 am (0.8 ft)
Next high tide : 11:42 am (8.6 ft)
Sunset today : 4:24 pm
Sunrise tomorrow : 6:29 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Jul 2084

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:287.211:308.45:140.35:111.35:088:26New Moon1Sat
2Sun12:117.35:560.35:521.25:088:26New Moon2Sun
3Mon12:118.412:517.36:340.26:301.25:098:25New Moon3Mon
4Tue12:498.41:287.47:100.27:081.25:108:25New Moon4Tue
5Wed1:268.42:047.57:440.27:451.25:108:25Waxing Crescent5Wed
6Thu2:028.32:387.58:170.28:231.15:118:24Waxing Crescent6Thu
7Fri2:388.23:137.68:510.39:031.15:128:24Waxing Crescent7Fri
8Sat3:168.03:507.79:280.49:461.05:128:24Waxing Crescent8Sat
9Sun3:587.84:307.910:070.510:331.05:138:23First Quarter9Sun
10Mon4:447.65:138.110:500.611:230.85:148:23First Quarter10Mon
11Tue5:357.46:018.311:370.75:158:22First Quarter11Tue
12Wed6:317.36:548.512:170.712:280.85:158:21First Quarter12Wed
13Thu7:327.37:528.71:170.51:260.85:168:21Waxing Gibbous13Thu
14Fri8:377.48:539.12:200.22:270.75:178:20Waxing Gibbous14Fri
15Sat9:407.69:549.43:22-0.23:280.45:188:20Waxing Gibbous15Sat
16Sun10:407.910:529.84:21-0.64:270.15:198:19Full Moon16Sun
17Mon11:378.311:4910.05:18-1.05:25-0.25:208:18Full Moon17Mon
18Tue12:338.66:12-1.26:22-0.45:218:17Full Moon18Tue
19Wed12:4510.01:268.97:05-1.37:18-0.55:228:16Waning Gibbous19Wed
20Thu1:409.92:189.07:56-1.38:13-0.55:238:16Waning Gibbous20Thu
21Fri2:349.63:099.08:46-1.09:09-0.35:248:15Waning Gibbous21Fri
22Sat3:289.14:028.99:37-0.610:07-0.15:248:14Waning Gibbous22Sat
23Sun4:258.54:568.710:29-0.111:060.25:258:13Third Quarter23Sun
24Mon5:247.95:508.511:230.45:268:12Third Quarter24Mon
25Tue6:237.56:468.212:070.512:180.95:278:11Third Quarter25Tue
26Wed7:257.17:448.11:090.71:161.35:288:10Waning Crescent26Wed
27Thu8:276.98:418.02:120.82:161.55:298:09Waning Crescent27Thu
28Fri9:246.99:358.03:110.83:121.55:318:08Waning Crescent28Fri
29Sat10:166.910:238.24:030.74:021.45:328:07Waning Crescent29Sat
30Sun11:027.111:078.34:490.54:471.35:338:06New Moon30Sun
31Mon11:447.311:478.45:300.45:281.15:348:04New Moon31Mon
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 2% 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 (2% 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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