Tides Today & Tomorrow in Kanaka Bay, San Juan Island, WA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Kanaka Bay, San Juan Island, WA.
Next low tide (tomorrow) : 6:48 am (0.1 ft)
Next high tide : in 7h 37m at 9:31 pm (6.7 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 6:14 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9449856
Common Questions About Tides

Kanaka Bay, San Juan Island, WA Tides - Jun 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:327.84:276.08:27-0.97:325.35:149:05Waxing Gibbous1Tue
2Wed1:077.95:266.89:10-1.88:395.95:139:06Waxing Gibbous2Wed
3Thu1:447.96:167.39:52-2.39:456.35:139:07Full Moon3Thu
4Fri2:227.77:017.610:34-2.610:496.45:129:08Full Moon4Fri
5Sat3:027.57:457.811:15-2.511:526.45:129:09Full Moon5Sat
6Sun3:437.18:277.811:55-2.15:119:10Waning Gibbous6Sun
7Mon4:266.69:067.71:036.212:33-1.65:119:11Waning Gibbous7Mon
8Tue5:096.09:427.62:425.81:11-0.95:119:11Waning Gibbous8Tue
9Wed10:127.41:490.05:109:12Waning Gibbous9Wed
10Thu10:347.32:260.85:109:13Third Quarter10Thu
11Fri8:203.910:497.16:023.73:031.85:109:13Third Quarter11Fri
12Sat10:233.511:027.16:392.93:412.75:109:14Third Quarter12Sat
13Sun1:553.97:092.14:223.65:099:14Third Quarter13Sun
14Mon3:224.67:361.25:114.55:099:15Waning Crescent14Mon
15Tue4:265.48:040.46:165.25:099:15Waning Crescent15Tue
16Wed12:167.25:136.08:34-0.37:285.85:099:16Waning Crescent16Wed
17Thu12:497.35:526.69:07-1.08:356.25:099:16Waning Crescent17Thu
18Fri1:237.36:287.19:42-1.59:376.45:099:17New Moon18Fri
19Sat1:587.37:037.410:18-1.910:376.55:109:17New Moon19Sat
20Sun2:357.27:357.710:56-2.111:336.45:109:17New Moon20Sun
21Mon3:167.08:067.811:34-2.15:109:17New Moon21Mon
22Tue4:066.78:327.812:316.212:13-1.85:109:18Waxing Crescent22Tue
23Wed5:056.18:557.81:355.712:53-1.25:109:18Waxing Crescent23Wed
24Thu6:135.59:167.82:434.91:34-0.35:119:18Waxing Crescent24Thu
25Fri7:334.79:377.83:453.92:170.95:119:18First Quarter25Fri
26Sat9:144.110:037.84:422.83:002.15:129:18First Quarter26Sat
27Sun12:064.05:381.63:463.45:129:18First Quarter27Sun
28Mon2:224.86:320.44:364.65:139:18Waxing Gibbous28Mon
29Tue3:455.77:23-0.65:395.55:139:18Waxing Gibbous29Tue
30Wed4:456.58:10-1.46:596.25:149:17Waxing Gibbous30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9449856)

Common Questions About Kanaka Bay, San Juan Island, WA Tides

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What time does the tide turn (slack tide) in Kanaka Bay, San Juan Island, WA today?

Slack tide in Kanaka Bay, San Juan Island, WA is approximately 2:09 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 Kanaka Bay, San Juan Island, WA?

Kanaka Bay, San Juan Island, WA is currently in a transitional phase. Tonight's moon is 66% 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 Kanaka Bay, San Juan Island, 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 Kanaka Bay, San Juan Island, WA?

Tide predictions for Kanaka Bay, San Juan Island, 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 Kanaka Bay, San Juan Island, WA?

Tide data for Kanaka Bay, San Juan Island, WA is sourced from NOAA Station #9449856. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9449856.

What is the moon phase in Kanaka Bay, San Juan Island, WA tonight?

Tonight the moon over Kanaka Bay, San Juan Island, WA is First Quarter (66% illuminated). This places Kanaka Bay, San Juan Island, WA 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