Puerto Rico tide station

San Juan tide times

Today, Sunday, October 18, 2026: high tide at 1:02 AM (1.0 ft) and 3:11 PM (1.6 ft); low tide at 7:31 AM (0.4 ft) and 10:02 PM (0.8 ft). Water temperature 86.2 F at San Juan, La Puntilla, San Juan Bay.

NOAA station 9755371 · Reference station · MLLW datum · times in AST · sunrise 6:19 AM, sunset 6:00 PM · first quarter (51% lit)

High tide▲

1:02AM

1.0FT MLLW

high

Low tide▼

7:31AM

0.4FT MLLW

low

High tide▲

3:11PM

1.6FT MLLW

high

Low tide▼

10:02PM

0.8FT MLLW

low

Water temp°F

86.2

30.1C

San Juan, La Puntilla, San Juan Bay

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

As of 5:20 AM the tide is falling toward low tide at 7:31 AM (0.4 ft).

First Quarter 51% litSunrise 6:19 AMSunset 6:00 PMDaylight 11h 40mAST

High tide at San Juan, Puerto Rico on October 18, 2026 is at 1:02 AM (1.0 ft above MLLW) and 3:11 PM (1.6 ft above MLLW).
Low tide at San Juan on October 18, 2026 is at 7:31 AM (0.4 ft) and 10:02 PM (0.8 ft).
Today's tidal range at San Juan is 1.2 ft (highest high 1.6 ft, lowest low 0.4 ft).
The nearest NOAA water temperature to San Juan is 86.2 F at San Juan, La Puntilla, San Juan Bay, as of October 18, 2026.
Sunrise 6:19 AM, sunset 6:00 PM (AST); moon first quarter, 51% illuminated.
Predictions are NOAA CO-OPS tide predictions for station 9755371 (harmonic reference station), heights above MLLW.

Next 7 days at San Juan

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Oct 18today	1:02 AM1.0 ft	7:31 AM0.4 ft	3:11 PM1.6 ft	10:02 PM0.8 ft	6:19 AM	6:00 PM	51%
Mon Oct 19	2:14 AM1.0 ft	8:26 AM0.4 ft	3:59 PM1.6 ft	10:39 PM0.8 ft	6:19 AM	5:59 PM	61%
Tue Oct 20	3:32 AM1.1 ft	9:26 AM0.5 ft	4:42 PM1.6 ft	11:12 PM0.7 ft	6:20 AM	5:59 PM	71%
Wed Oct 21	4:40 AM1.2 ft	10:30 AM0.5 ft	5:21 PM1.5 ft	11:43 PM0.6 ft	6:20 AM	5:58 PM	80%
Thu Oct 22	5:41 AM1.3 ft	11:36 AM0.5 ft	5:58 PM1.5 ft		6:20 AM	5:57 PM	88%
Fri Oct 23	12:14 AM0.5 ft	6:36 AM1.5 ft	12:41 PM0.6 ft	6:34 PM1.4 ft	6:21 AM	5:57 PM	94%
Sat Oct 24	12:47 AM0.3 ft	7:27 AM1.7 ft	1:43 PM0.6 ft	7:11 PM1.3 ft	6:21 AM	5:56 PM	98%

Water temperature near San Juan

86.2 F (30.1 C)

NOAA CO-OPS station 9755371 (this station's own sensor), read 5:00 AM local, October 18, 2026

Over the past 30 days this sensor ranged from 85.1 to 87.6 F. Typical for October here is 86.2 F (5-year hourly mean; range 82.8 to 88.7), so today is 0.0 F above typical.

Water temperature is the nearest NOAA reading to San Juan, not a measurement at the tide gauge itself. See water temperature by state for every sensor and buoy.

Tide tables

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

October 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Thu Oct 1					6:15 AM	6:13 PM	72%
Fri Oct 2					6:15 AM	6:12 PM	62%
Sat Oct 3					6:15 AM	6:11 PM	52%
Sun Oct 4					6:16 AM	6:11 PM	41%
Mon Oct 5					6:16 AM	6:10 PM	31%
Tue Oct 6					6:16 AM	6:09 PM	22%
Wed Oct 7					6:16 AM	6:08 PM	14%
Thu Oct 8					6:17 AM	6:07 PM	7%
Fri Oct 9					6:17 AM	6:07 PM	3%
Sat Oct 10					6:17 AM	6:06 PM	0%
Sun Oct 11					6:17 AM	6:05 PM	0%
Mon Oct 12					6:18 AM	6:04 PM	2%
Tue Oct 13					6:18 AM	6:04 PM	7%
Wed Oct 14					6:18 AM	6:03 PM	13%
Thu Oct 15					6:18 AM	6:02 PM	21%
Fri Oct 16	5:49 AM0.3 ft	1:24 PM1.7 ft	8:29 PM0.8 ft		6:19 AM	6:01 PM	30%
Sat Oct 17	12:08 AM1.0 ft	6:39 AM0.3 ft	2:18 PM1.6 ft	9:17 PM0.8 ft	6:19 AM	6:01 PM	40%
Sun Oct 18today	1:02 AM1.0 ft	7:31 AM0.4 ft	3:11 PM1.6 ft	10:02 PM0.8 ft	6:19 AM	6:00 PM	51%
Mon Oct 19	2:14 AM1.0 ft	8:26 AM0.4 ft	3:59 PM1.6 ft	10:39 PM0.8 ft	6:19 AM	5:59 PM	61%
Tue Oct 20	3:32 AM1.1 ft	9:26 AM0.5 ft	4:42 PM1.6 ft	11:12 PM0.7 ft	6:20 AM	5:59 PM	71%
Wed Oct 21	4:40 AM1.2 ft	10:30 AM0.5 ft	5:21 PM1.5 ft	11:43 PM0.6 ft	6:20 AM	5:58 PM	80%
Thu Oct 22	5:41 AM1.3 ft	11:36 AM0.5 ft	5:58 PM1.5 ft		6:20 AM	5:57 PM	88%
Fri Oct 23	12:14 AM0.5 ft	6:36 AM1.5 ft	12:41 PM0.6 ft	6:34 PM1.4 ft	6:21 AM	5:57 PM	94%
Sat Oct 24	12:47 AM0.3 ft	7:27 AM1.7 ft	1:43 PM0.6 ft	7:11 PM1.3 ft	6:21 AM	5:56 PM	98%
Sun Oct 25	1:22 AM0.2 ft	8:17 AM1.9 ft	2:42 PM0.6 ft	7:49 PM1.2 ft	6:22 AM	5:55 PM	100%
Mon Oct 26	1:59 AM0.1 ft	9:06 AM2.0 ft	3:40 PM0.6 ft	8:29 PM1.2 ft	6:22 AM	5:55 PM	99%
Tue Oct 27	2:39 AM-0.0 ft	9:56 AM2.1 ft	4:39 PM0.6 ft	9:12 PM1.1 ft	6:22 AM	5:54 PM	97%
Wed Oct 28	3:23 AM-0.1 ft	10:48 AM2.1 ft	5:39 PM0.6 ft	9:57 PM1.1 ft	6:23 AM	5:54 PM	92%
Thu Oct 29	4:13 AM-0.1 ft	11:43 AM2.1 ft	6:39 PM0.7 ft	10:48 PM1.0 ft	6:23 AM	5:53 PM	85%
Fri Oct 30	5:09 AM-0.1 ft	12:42 PM2.1 ft	7:37 PM0.7 ft	11:46 PM1.0 ft	6:23 AM	5:53 PM	77%
Sat Oct 31	6:11 AM-0.0 ft	1:44 PM2.0 ft	8:32 PM0.7 ft		6:24 AM	5:52 PM	68%

November 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Nov 1	12:57 AM1.1 ft	7:15 AM0.1 ft	2:45 PM1.9 ft	9:23 PM0.6 ft	6:24 AM	5:52 PM	57%
Mon Nov 2	2:19 AM1.1 ft	8:23 AM0.2 ft	3:41 PM1.8 ft	10:10 PM0.6 ft	6:25 AM	5:51 PM	47%
Tue Nov 3	3:40 AM1.2 ft	9:34 AM0.3 ft	4:31 PM1.6 ft	10:54 PM0.5 ft	6:25 AM	5:51 PM	36%
Wed Nov 4	4:51 AM1.4 ft	10:49 AM0.4 ft	5:16 PM1.5 ft	11:35 PM0.4 ft	6:26 AM	5:50 PM	27%
Thu Nov 5	5:55 AM1.5 ft	12:06 PM0.5 ft	5:57 PM1.4 ft		6:26 AM	5:50 PM	18%
Fri Nov 6	12:13 AM0.2 ft	6:53 AM1.7 ft	1:15 PM0.5 ft	6:35 PM1.2 ft	6:27 AM	5:50 PM	10%
Sat Nov 7	12:48 AM0.1 ft	7:44 AM1.8 ft	2:16 PM0.5 ft	7:12 PM1.1 ft	6:27 AM	5:49 PM	5%
Sun Nov 8	1:23 AM0.1 ft	8:31 AM1.9 ft	3:11 PM0.6 ft	7:49 PM1.1 ft	6:27 AM	5:49 PM	1%
Mon Nov 9	1:57 AM0.0 ft	9:15 AM1.9 ft	4:02 PM0.6 ft	8:25 PM1.0 ft	6:28 AM	5:49 PM	0%
Tue Nov 10	2:32 AM0.0 ft	9:57 AM1.9 ft	4:51 PM0.6 ft	9:01 PM0.9 ft	6:28 AM	5:48 PM	1%
Wed Nov 11	3:08 AM0.1 ft	10:38 AM1.8 ft	5:40 PM0.6 ft	9:37 PM0.9 ft	6:29 AM	5:48 PM	4%
Thu Nov 12	3:47 AM0.1 ft	11:20 AM1.8 ft	6:28 PM0.7 ft	10:14 PM0.9 ft	6:30 AM	5:48 PM	9%
Fri Nov 13	4:29 AM0.1 ft	12:03 PM1.7 ft	7:15 PM0.7 ft	10:54 PM0.9 ft	6:30 AM	5:47 PM	16%
Sat Nov 14	5:14 AM0.2 ft	12:48 PM1.6 ft	7:56 PM0.7 ft	11:41 PM0.9 ft	6:31 AM	5:47 PM	25%
Sun Nov 15	6:03 AM0.3 ft	1:32 PM1.6 ft	8:32 PM0.7 ft		6:31 AM	5:47 PM	35%
Mon Nov 16	12:41 AM0.9 ft	6:55 AM0.3 ft	2:16 PM1.5 ft	9:02 PM0.6 ft	6:32 AM	5:47 PM	45%
Tue Nov 17	1:56 AM0.9 ft	7:50 AM0.4 ft	2:56 PM1.5 ft	9:32 PM0.5 ft	6:32 AM	5:47 PM	56%
Wed Nov 18	3:15 AM1.0 ft	8:52 AM0.5 ft	3:35 PM1.4 ft	10:04 PM0.4 ft	6:33 AM	5:46 PM	66%
Thu Nov 19	4:23 AM1.2 ft	10:00 AM0.6 ft	4:13 PM1.3 ft	10:39 PM0.3 ft	6:33 AM	5:46 PM	76%
Fri Nov 20	5:22 AM1.4 ft	11:15 AM0.6 ft	4:53 PM1.2 ft	11:16 PM0.2 ft	6:34 AM	5:46 PM	84%
Sat Nov 21	6:16 AM1.6 ft	12:29 PM0.6 ft	5:34 PM1.2 ft	11:56 PM0.0 ft	6:35 AM	5:46 PM	91%
Sun Nov 22	7:07 AM1.8 ft	1:37 PM0.6 ft	6:18 PM1.1 ft		6:35 AM	5:46 PM	96%
Mon Nov 23	12:38 AM-0.1 ft	7:59 AM2.0 ft	2:39 PM0.6 ft	7:04 PM1.0 ft	6:36 AM	5:46 PM	99%
Tue Nov 24	1:24 AM-0.2 ft	8:51 AM2.1 ft	3:36 PM0.5 ft	7:53 PM1.0 ft	6:36 AM	5:46 PM	100%
Wed Nov 25	2:12 AM-0.3 ft	9:43 AM2.1 ft	4:32 PM0.6 ft	8:44 PM1.0 ft	6:37 AM	5:46 PM	99%
Thu Nov 26	3:03 AM-0.3 ft	10:37 AM2.1 ft	5:28 PM0.6 ft	9:39 PM1.0 ft	6:37 AM	5:46 PM	95%
Fri Nov 27	3:59 AM-0.3 ft	11:31 AM2.1 ft	6:22 PM0.6 ft	10:38 PM1.0 ft	6:38 AM	5:46 PM	89%
Sat Nov 28	4:58 AM-0.2 ft	12:27 PM1.9 ft	7:13 PM0.5 ft	11:45 PM1.0 ft	6:39 AM	5:46 PM	82%
Sun Nov 29	6:01 AM-0.1 ft	1:21 PM1.8 ft	8:01 PM0.5 ft		6:39 AM	5:46 PM	73%
Mon Nov 30	1:01 AM1.1 ft	7:07 AM0.1 ft	2:14 PM1.7 ft	8:46 PM0.4 ft	6:40 AM	5:46 PM	63%

Tidal datums at San Juan

Heights on this page are above mean lower low water (MLLW), the chart datum. NOAA's accepted datums for station 9755371, in feet above MLLW:

MHHW

4.96 ft

Mean higher high water

MHW

4.70 ft

Mean high water

MSL

4.15 ft

Mean sea level

MLW

3.59 ft

Mean low water

1.10 ft

Mean range

1.58 ft

Diurnal range

Highest observed water level: 7.73 ft above MLLW on September 18, 1989. Tidal datum epoch 1983-2001.

Nearby tide stations

Boca de Cangrejos8.2 mi · next high 3:16 PM
Boca del Cibuco18 mi · next high 2:46 PM
Luquillo25 mi · next high 2:31 PM
Naguabo33 mi · next high 4:17 PM
Fajardo33 mi · next high 2:47 PM
Yabucoa Harbor34 mi · next high 4:29 PM

Questions

What time is high tide at San Juan today?

High tide at San Juan, Puerto Rico on Sunday, October 18, 2026 is at 1:02 AM (1.0 ft above MLLW) and 3:11 PM (1.6 ft above MLLW), NOAA prediction, local time.

What time is low tide at San Juan today?

Low tide at San Juan on Sunday, October 18, 2026 is at 7:31 AM (0.4 ft) and 10:02 PM (0.8 ft).

What is the water temperature at San Juan?

The nearest NOAA water-temperature reading to San Juan is 86.2 F at San Juan, La Puntilla, San Juan Bay, 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 9755371.