Tides Today & Tomorrow in Yarmouth, Royal River, ME

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Yarmouth, Royal River, ME.
Next low tide : 9:50 am (0.7 ft)
Next high tide : in 16m at 3:47 am (9.1 ft)
Sunset today : 7:40 pm
Sunrise tomorrow : 5:48 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8417948
Common Questions About Tides

Yarmouth, Royal River, ME Tides - Jan 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:189.36:558.312:430.67:144:13Waxing Gibbous1Sun
2Mon7:149.87:548.712:540.81:420.17:144:14Waxing Gibbous2Mon
3Tue8:0910.38:499.11:510.42:37-0.57:144:15Waxing Gibbous3Tue
4Wed9:0210.99:439.62:450.03:30-1.17:144:16Full Moon4Wed
5Thu9:5511.410:3510.03:39-0.54:22-1.67:144:17Full Moon5Thu
6Fri10:4811.711:2810.34:32-0.85:13-1.97:144:18Full Moon6Fri
7Sat11:4111.85:25-1.16:04-2.17:144:19Waning Gibbous7Sat
8Sun12:1910.612:3411.66:19-1.16:55-1.97:144:20Waning Gibbous8Sun
9Mon1:1110.61:2811.27:14-1.07:47-1.67:144:21Waning Gibbous9Mon
10Tue2:0510.52:2510.68:11-0.88:41-1.17:134:22Waning Gibbous10Tue
11Wed3:0210.33:2610.09:12-0.49:38-0.57:134:23Third Quarter11Wed
12Thu4:0010.14:299.310:15-0.110:370.07:134:24Third Quarter12Thu
13Fri5:009.85:338.811:200.211:380.57:124:25Third Quarter13Fri
14Sat6:019.66:398.512:270.37:124:26Waning Crescent14Sat
15Sun7:019.57:428.412:410.81:310.37:114:28Waning Crescent15Sun
16Mon7:589.58:378.41:421.02:280.27:114:29Waning Crescent16Mon
17Tue8:499.69:278.62:350.93:180.17:104:30Waning Crescent17Tue
18Wed9:359.710:118.73:230.94:02-0.17:104:31New Moon18Wed
19Thu10:179.810:518.84:050.84:42-0.17:094:33New Moon19Thu
20Fri10:569.811:298.94:450.75:18-0.27:094:34New Moon20Fri
21Sat11:339.85:210.65:52-0.17:084:35New Moon21Sat
22Sun12:048.912:089.75:570.66:24-0.17:074:36Waxing Crescent22Sun
23Mon12:379.012:429.56:320.66:560.07:064:38Waxing Crescent23Mon
24Tue1:109.01:179.37:080.77:300.27:064:39Waxing Crescent24Tue
25Wed1:449.01:559.07:470.78:060.37:054:40Waxing Crescent25Wed
26Thu2:219.02:368.78:290.88:470.57:044:42First Quarter26Thu
27Fri3:029.03:248.59:160.89:320.77:034:43First Quarter27Fri
28Sat3:499.14:168.310:080.810:230.87:024:44First Quarter28Sat
29Sun4:409.25:158.211:050.711:180.97:014:46First Quarter29Sun
30Mon5:389.46:208.212:070.57:004:47Waxing Gibbous30Mon
31Tue6:419.87:258.612:200.71:120.06:594:49Waxing Gibbous31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417948)

Common Questions About Yarmouth, Royal River, ME Tides

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What time does the tide turn (slack tide) in Yarmouth, Royal River, ME today?

Slack tide in Yarmouth, Royal River, ME is approximately 6:48 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 Yarmouth, Royal River, ME?

Yarmouth, Royal River, ME is currently in a transitional phase. Tonight's moon is 36% 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 Yarmouth, Royal River, ME 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 Yarmouth, Royal River, ME?

Tide predictions for Yarmouth, Royal River, ME 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 Yarmouth, Royal River, ME?

Tide data for Yarmouth, Royal River, ME is sourced from NOAA Station #8417948. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8417948.

What is the moon phase in Yarmouth, Royal River, ME tonight?

Tonight the moon over Yarmouth, Royal River, ME is First Quarter (36% illuminated). This places Yarmouth, Royal River, ME 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