Texas tide station

San Martin Lake Channel tide times

Today, Sunday, October 18, 2026: high tide at 1:41 AM (1.9 ft); low tide at 4:09 PM (0.5 ft). Water temperature 76.8 F at Port Isabel (6.6 mi away).

NOAA station 8779911 · Reference station · MLLW datum · times in CDT · sunrise 7:30 AM, sunset 6:59 PM · first quarter (51% lit)

High tide▲

1:41AM

1.9FT MLLW

high

Low tide▼

4:09PM

0.5FT MLLW

low

predicted height above MLLWnightnow (build time; your browser updates it)

As of 4:20 AM the tide is falling toward low tide at 4:09 PM (0.5 ft).

First Quarter 51% litSunrise 7:30 AMSunset 6:59 PMDaylight 11h 28mCDT

High tide at San Martin Lake Channel, Texas on October 18, 2026 is at 1:41 AM (1.9 ft above MLLW).
Low tide at San Martin Lake Channel on October 18, 2026 is at 4:09 PM (0.5 ft).
Today's tidal range at San Martin Lake Channel is 1.4 ft (highest high 1.9 ft, lowest low 0.5 ft).
The nearest NOAA water temperature to San Martin Lake Channel is 76.8 F at Port Isabel (6.6 mi away), as of October 18, 2026.
Sunrise 7:30 AM, sunset 6:59 PM (CDT); moon first quarter, 51% illuminated.
Predictions are NOAA CO-OPS tide predictions for station 8779911 (harmonic reference station), heights above MLLW.

Next 7 days at San Martin Lake Channel

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Oct 18today	1:41 AM1.9 ft	4:09 PM0.5 ft			7:30 AM	6:59 PM	51%
Mon Oct 19	2:08 AM1.9 ft	5:14 PM0.6 ft			7:30 AM	6:58 PM	62%
Tue Oct 20	2:23 AM1.8 ft	6:10 PM0.7 ft			7:31 AM	6:57 PM	72%
Wed Oct 21	2:27 AM1.7 ft	9:08 AM1.3 ft	11:56 AM1.3 ft	7:00 PM0.8 ft	7:31 AM	6:56 PM	81%
Thu Oct 22	2:19 AM1.6 ft	8:34 AM1.1 ft	1:41 PM1.4 ft	7:56 PM1.0 ft	7:32 AM	6:55 PM	88%
Fri Oct 23	1:58 AM1.5 ft	8:39 AM0.9 ft	3:35 PM1.5 ft	9:13 PM1.2 ft	7:33 AM	6:54 PM	94%
Sat Oct 24	1:42 AM1.5 ft	9:00 AM0.6 ft	4:51 PM1.7 ft	10:33 PM1.4 ft	7:33 AM	6:53 PM	98%

Water temperature near San Martin Lake Channel

76.8 F (24.9 C)

NOAA CO-OPS station 8779770 (Port Isabel sensor, 6.6 mi away), read 4:00 AM local, October 18, 2026

Over the past 30 days this sensor ranged from 75.9 to 91.4 F. Typical for October here is 82.2 F (5-year hourly mean; range 63.7 to 89.4), so today is 5.4 F below typical.

Water temperature is the nearest NOAA reading to San Martin Lake Channel, not a measurement at the tide gauge itself (this station has no water-temperature sensor). See water temperature by state for every sensor and buoy.

Tide tables

High (▲) and low (▼) tides in CDT with sunrise, sunset and moon illumination. CSV of today's tides for every Texas station.

October 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Thu Oct 1					7:22 AM	7:16 PM	72%
Fri Oct 2					7:22 AM	7:15 PM	62%
Sat Oct 3					7:23 AM	7:14 PM	51%
Sun Oct 4					7:23 AM	7:13 PM	41%
Mon Oct 5					7:23 AM	7:12 PM	31%
Tue Oct 6					7:24 AM	7:11 PM	21%
Wed Oct 7					7:24 AM	7:10 PM	13%
Thu Oct 8					7:25 AM	7:09 PM	7%
Fri Oct 9					7:25 AM	7:07 PM	3%
Sat Oct 10					7:26 AM	7:06 PM	0%
Sun Oct 11					7:26 AM	7:05 PM	0%
Mon Oct 12					7:27 AM	7:04 PM	2%
Tue Oct 13					7:27 AM	7:03 PM	7%
Wed Oct 14					7:28 AM	7:02 PM	13%
Thu Oct 15					7:28 AM	7:02 PM	21%
Fri Oct 16	12:28 AM2.0 ft	2:13 PM0.4 ft			7:29 AM	7:01 PM	30%
Sat Oct 17	1:06 AM2.0 ft	3:08 PM0.5 ft			7:29 AM	7:00 PM	40%
Sun Oct 18today	1:41 AM1.9 ft	4:09 PM0.5 ft			7:30 AM	6:59 PM	51%
Mon Oct 19	2:08 AM1.9 ft	5:14 PM0.6 ft			7:30 AM	6:58 PM	62%
Tue Oct 20	2:23 AM1.8 ft	6:10 PM0.7 ft			7:31 AM	6:57 PM	72%
Wed Oct 21	2:27 AM1.7 ft	9:08 AM1.3 ft	11:56 AM1.3 ft	7:00 PM0.8 ft	7:31 AM	6:56 PM	81%
Thu Oct 22	2:19 AM1.6 ft	8:34 AM1.1 ft	1:41 PM1.4 ft	7:56 PM1.0 ft	7:32 AM	6:55 PM	88%
Fri Oct 23	1:58 AM1.5 ft	8:39 AM0.9 ft	3:35 PM1.5 ft	9:13 PM1.2 ft	7:33 AM	6:54 PM	94%
Sat Oct 24	1:42 AM1.5 ft	9:00 AM0.6 ft	4:51 PM1.7 ft	10:33 PM1.4 ft	7:33 AM	6:53 PM	98%
Sun Oct 25	1:31 AM1.5 ft	9:30 AM0.4 ft	6:06 PM1.8 ft		7:34 AM	6:53 PM	100%
Mon Oct 26	10:06 AM0.2 ft	7:37 PM2.0 ft			7:34 AM	6:52 PM	99%
Tue Oct 27	10:47 AM0.0 ft	8:59 PM2.1 ft			7:35 AM	6:51 PM	97%
Wed Oct 28	11:38 AM-0.1 ft	10:34 PM2.2 ft			7:36 AM	6:50 PM	92%
Thu Oct 29	12:40 PM-0.1 ft	11:52 PM2.2 ft			7:36 AM	6:50 PM	85%
Fri Oct 30	1:48 PM-0.1 ft				7:37 AM	6:49 PM	77%
Sat Oct 31	12:45 AM2.2 ft	2:53 PM0.0 ft			7:37 AM	6:48 PM	67%

November 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Nov 1	1:27 AM2.1 ft	2:59 PM0.2 ft			6:38 AM	5:47 PM	57%
Mon Nov 2	12:57 AM1.9 ft	4:13 PM0.4 ft			6:39 AM	5:47 PM	46%
Tue Nov 3	1:07 AM1.7 ft	7:06 AM1.3 ft	9:55 AM1.3 ft	5:22 PM0.7 ft	6:39 AM	5:46 PM	36%
Wed Nov 4	12:54 AM1.5 ft	7:12 AM1.0 ft	12:10 PM1.4 ft	6:27 PM1.0 ft	6:40 AM	5:45 PM	26%
Thu Nov 5	12:26 AM1.4 ft	7:34 AM0.8 ft	2:07 PM1.5 ft	7:46 PM1.2 ft	6:41 AM	5:45 PM	17%
Fri Nov 6	8:00 AM0.5 ft	3:39 PM1.6 ft	9:08 PM1.4 ft	11:44 PM1.4 ft	6:41 AM	5:44 PM	10%
Sat Nov 7	8:26 AM0.4 ft	4:49 PM1.7 ft			6:42 AM	5:44 PM	4%
Sun Nov 8	8:51 AM0.2 ft	6:03 PM1.7 ft			6:43 AM	5:43 PM	1%
Mon Nov 9	9:15 AM0.2 ft	7:04 PM1.8 ft			6:43 AM	5:43 PM	0%
Tue Nov 10	9:42 AM0.1 ft	7:55 PM1.8 ft			6:44 AM	5:42 PM	1%
Wed Nov 11	10:15 AM0.1 ft	9:06 PM1.8 ft			6:45 AM	5:42 PM	4%
Thu Nov 12	10:57 AM0.1 ft	10:28 PM1.8 ft			6:46 AM	5:41 PM	10%
Fri Nov 13	11:50 AM0.1 ft	11:09 PM1.8 ft			6:46 AM	5:41 PM	17%
Sat Nov 14	12:43 PM0.2 ft	11:33 PM1.8 ft			6:47 AM	5:40 PM	26%
Sun Nov 15	1:29 PM0.2 ft	11:47 PM1.7 ft			6:48 AM	5:40 PM	35%
Mon Nov 16	2:12 PM0.4 ft	11:54 PM1.6 ft			6:48 AM	5:40 PM	46%
Tue Nov 17	2:57 PM0.5 ft	11:53 PM1.5 ft			6:49 AM	5:39 PM	56%
Wed Nov 18	3:56 PM0.7 ft	11:41 PM1.4 ft			6:50 AM	5:39 PM	67%
Thu Nov 19	6:29 AM0.8 ft	12:19 PM1.1 ft	5:10 PM1.0 ft	11:19 PM1.3 ft	6:51 AM	5:39 PM	76%
Fri Nov 20	6:31 AM0.6 ft	2:31 PM1.3 ft	6:44 PM1.2 ft	11:05 PM1.3 ft	6:51 AM	5:38 PM	85%
Sat Nov 21	6:52 AM0.3 ft	3:43 PM1.5 ft			6:52 AM	5:38 PM	92%
Sun Nov 22	7:25 AM0.0 ft	4:45 PM1.7 ft			6:53 AM	5:38 PM	96%
Mon Nov 23	8:05 AM-0.2 ft	5:59 PM1.8 ft			6:54 AM	5:38 PM	99%
Tue Nov 24	8:51 AM-0.4 ft	7:13 PM1.9 ft			6:54 AM	5:38 PM	100%
Wed Nov 25	9:39 AM-0.5 ft	8:23 PM2.0 ft			6:55 AM	5:37 PM	98%
Thu Nov 26	10:34 AM-0.5 ft	9:44 PM2.0 ft			6:56 AM	5:37 PM	94%
Fri Nov 27	11:36 AM-0.5 ft	10:46 PM1.9 ft			6:57 AM	5:37 PM	89%
Sat Nov 28	12:40 PM-0.3 ft	11:22 PM1.8 ft			6:57 AM	5:37 PM	81%
Sun Nov 29	1:37 PM-0.1 ft	11:40 PM1.6 ft			6:58 AM	5:37 PM	72%
Mon Nov 30	2:31 PM0.2 ft	11:38 PM1.4 ft			6:59 AM	5:37 PM	62%

Tidal datums at San Martin Lake Channel

Heights on this page are above mean lower low water (MLLW), the chart datum. NOAA's accepted datums for station 8779911, in feet above MLLW:

MHHW

30.98 ft

Mean higher high water

MHW

30.91 ft

Mean high water

MSL

30.42 ft

Mean sea level

MLW

29.80 ft

Mean low water

1.11 ft

Mean range

1.36 ft

Diurnal range

Nearby tide stations

Port Isabel6.6 mi
South Bay entrance8.0 mi
Queen Isabella Causeway (west end)8.2 mi
South Padre Island C.G. Station9.5 mi
Queen Isabella Causeway (east end)9.6 mi
PADRE ISLAND (south end)9.9 mi

Questions

What time is high tide at San Martin Lake Channel today?

High tide at San Martin Lake Channel, Texas on Sunday, October 18, 2026 is at 1:41 AM (1.9 ft above MLLW), NOAA prediction, local time.

What time is low tide at San Martin Lake Channel today?

Low tide at San Martin Lake Channel on Sunday, October 18, 2026 is at 4:09 PM (0.5 ft).

What is the water temperature at San Martin Lake Channel?

The nearest NOAA water-temperature reading to San Martin Lake Channel is 76.8 F at Port Isabel (6.6 mi away), as of October 18, 2026.

Not for navigation. Predictions do not include weather; wind and pressure can move the real water level by a foot or more. Source: NOAA CO-OPS station 8779911.