Tides Today & Tomorrow in Port Madison, WA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Port Madison, WA.
Next low tide (tomorrow) : 6:25 am (1.1 ft)
Next high tide : in 3h 14m at 11:18 pm (10.9 ft)
Sunset today : 8:58 pm
Sunrise tomorrow : 5:34 am
Moon phase : First Quarter (53% illuminated)
Tide Station Location : Station #9445753
Common Questions About Tides

Port Madison, WA Tides - Aug 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:0210.15:3710.79:53-1.110:386.85:488:44Waning Crescent1Tue
2Wed3:4610.46:0911.210:35-1.711:196.45:508:42New Moon2Wed
3Thu4:3210.66:4111.511:17-2.011:595.95:518:41New Moon3Thu
4Fri5:1910.77:1411.811:59-2.15:528:39New Moon4Fri
5Sat6:1010.67:5012.112:425.212:43-1.75:538:38Waxing Crescent5Sat
6Sun7:0410.48:2712.21:284.41:27-1.05:558:36Waxing Crescent6Sun
7Mon8:0310.09:0512.22:173.52:130.25:568:35Waxing Crescent7Mon
8Tue9:079.59:4612.03:102.73:021.75:578:33First Quarter8Tue
9Wed10:209.010:3111.74:061.93:553.25:598:31First Quarter9Wed
10Thu11:478.711:2111.35:061.24:594.86:008:30First Quarter10Thu
11Fri1:328.96:090.66:186.06:018:28First Quarter11Fri
12Sat12:1710.93:069.67:130.07:486.56:038:26Waxing Gibbous12Sat
13Sun1:1810.64:1310.48:13-0.59:096.56:048:25Waxing Gibbous13Sun
14Mon2:1910.45:0310.99:07-0.910:116.26:058:23Waxing Gibbous14Mon
15Tue3:1510.35:4311.39:56-1.010:595.86:078:21Waxing Gibbous15Tue
16Wed4:0610.26:1711.410:39-1.011:395.46:088:19Full Moon16Wed
17Thu4:5310.26:4511.411:19-0.86:098:18Full Moon17Thu
18Fri5:3710.17:1011.312:144.911:57 AM-0.46:118:16Full Moon18Fri
19Sat6:209.97:3511.212:484.512:340.26:128:14Waning Gibbous19Sat
20Sun7:039.78:0111.11:224.01:100.96:138:12Waning Gibbous20Sun
21Mon7:499.48:3011.01:573.51:471.86:158:10Waning Gibbous21Mon
22Tue8:379.29:0210.72:343.12:242.86:168:09Waning Gibbous22Tue
23Wed9:298.89:3710.43:152.73:053.96:178:07Waning Gibbous23Wed
24Thu10:298.610:1510.04:002.43:505.06:198:05Third Quarter24Thu
25Fri11:418.411:009.64:502.14:476.06:208:03Third Quarter25Fri
26Sat1:098.65:451.76:036.86:218:01Third Quarter26Sat
27Sun2:359.16:431.37:317.06:237:59Third Quarter27Sun
28Mon12:519.33:359.77:400.78:436.96:247:57Waning Crescent28Mon
29Tue1:499.44:1710.38:340.19:336.56:267:55Waning Crescent29Tue
30Wed2:449.84:5110.89:23-0.510:145.86:277:53Waning Crescent30Wed
31Thu3:3610.25:2311.210:10-1.010:525.06:287:51New Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9445753)

Common Questions About Port Madison, WA Tides

Show All
What time does the tide turn (slack tide) in Port Madison, WA today?

Slack tide in Port Madison, WA is approximately 2:51 am — 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 Port Madison, WA?

Port Madison, WA is currently in a neap phase. Tonight's moon is 53% 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 minimum.

What datum are Port Madison, WA 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 Port Madison, WA?

Tide predictions for Port Madison, WA 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 Port Madison, WA?

Tide data for Port Madison, WA is sourced from NOAA Station #9445753. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9445753.

What is the moon phase in Port Madison, WA tonight?

Tonight the moon over Port Madison, WA is First Quarter (53% illuminated). This places Port Madison, WA in a neap tide cycle, so tidal ranges are near their weekly minimum 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