Tides Today & Tomorrow in Clear Lake, Galveston Bay, TX

TIDE TIMES for Monday, September 21, 2026
The tide is currently falling in Clear Lake, Galveston Bay, TX.

Next low tide (tomorrow) : in 11h 52m at 12:31 am (0.3 ft)
Next high tide (tomorrow) : 10:54 am (1.4 ft)
Sunset today : 7:18 pm
Sunrise tomorrow : 7:08 am
Moon phase : Waxing Gibbous (76% illuminated)
Tide Station Location : Station #8770933
Common Questions About Tides

Clear Lake, Galveston Bay, TX Tides - Feb 1968

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Mar 1968 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Thu	1:54	0.5					5:30	-0.5	7:10	5:57		1	Thu
2	Fri	1:30	0.4	11:12 AM	0.1	7:12	0.1	6:06	-0.2	7:09	5:58		2	Fri
3	Sat	1:24	0.3	2:00	0.1	7:24	-0.1	6:36	0.0	7:08	5:59		3	Sat
4	Sun	12:36	0.3	11:30	0.3	7:48	-0.3			7:08	6:00		4	Sun
5	Mon			10:42	0.4	8:18	-0.4			7:07	6:00		5	Mon
6	Tue			10:54	0.5	8:48	-0.5			7:07	6:01		6	Tue
7	Wed			11:18	0.5	9:24	-0.5			7:06	6:02		7	Wed
8	Thu			11:48	0.6	10:12	-0.5			7:05	6:03		8	Thu
9	Fri					11:12	-0.6			7:04	6:04		9	Fri
10	Sat	12:36	0.6					12:18	-0.6	7:04	6:05		10	Sat
11	Sun	1:30	0.7					1:18	-0.7	7:03	6:05		11	Sun
12	Mon	2:30	0.8					2:18	-0.8	7:02	6:06		12	Mon
13	Tue	3:24	0.8					3:06	-0.8	7:01	6:07		13	Tue
14	Wed	4:36	0.7					3:54	-0.7	7:00	6:08		14	Wed
15	Thu	1:54	0.6					4:42	-0.5	7:00	6:08		15	Thu
16	Fri	1:00	0.4	9:30 AM	0.4	5:06	0.3	5:24	-0.2	6:59	6:09		16	Fri
17	Sat	12:36	0.3	12:12	0.4	5:42	0.0	6:18	0.0	6:58	6:10		17	Sat
18	Sun			2:24	0.5	6:24	-0.2	7:12	0.3	6:57	6:11		18	Sun
19	Mon			4:36	0.6	7:00	-0.4			6:56	6:11		19	Mon
20	Tue			6:54	0.7	7:48	-0.5			6:55	6:12		20	Tue
21	Wed			8:12	0.8	8:42	-0.5			6:54	6:13		21	Wed
22	Thu			9:24	0.8	9:48	-0.5			6:53	6:14		22	Thu
23	Fri			10:30	0.8	11:06	-0.5			6:52	6:14		23	Fri
24	Sat			11:24	0.8			12:18	-0.5	6:51	6:15		24	Sat
25	Sun			11:54	0.8			1:24	-0.6	6:50	6:16		25	Sun
26	Mon							2:18	-0.5	6:49	6:17		26	Mon
27	Tue	12:12	0.8					3:06	-0.4	6:48	6:17		27	Tue
28	Wed	12:12	0.7	11:48	0.6			3:42	-0.3	6:47	6:18		28	Wed
29	Thu	9:18	0.5	11:36	0.5	4:36	0.4	4:18	0.0	6:46	6:19		29	Thu
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8770933)

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Is this week a spring tide or neap tide in Clear Lake, Galveston Bay, TX?

Clear Lake, Galveston Bay, TX is currently in a transitional phase. Tonight's moon is 76% 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 Clear Lake, Galveston Bay, TX 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 Clear Lake, Galveston Bay, TX?

Tide predictions for Clear Lake, Galveston Bay, TX 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 Clear Lake, Galveston Bay, TX?

Tide data for Clear Lake, Galveston Bay, TX is sourced from NOAA Station #8770933. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8770933.

What is the moon phase in Clear Lake, Galveston Bay, TX tonight?

Tonight the moon over Clear Lake, Galveston Bay, TX is Waxing Gibbous (76% illuminated). This places Clear Lake, Galveston Bay, TX 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

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