Washington tide station

Roche Harbor, San Juan Island tide times

Today, Sunday, October 18, 2026: high tide at 1:32 PM (7.4 ft); low tide at 4:26 AM (0.7 ft). Water temperature 51.4 F at buoy 46088 (19 mi away).

NOAA station 9449834 · Subordinate station · MLLW datum · times in PDT · sunrise 7:38 AM, sunset 6:18 PM · first quarter (52% lit)

Low tide▼

4:26AM

0.7FT MLLW

low

High tide▲

1:32PM

7.4FT MLLW

high

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

As of 2:20 AM the tide is falling toward low tide at 4:26 AM (0.7 ft).

First Quarter 52% litSunrise 7:38 AMSunset 6:18 PMDaylight 10h 39mPDT

High tide at Roche Harbor, San Juan Island, Washington on October 18, 2026 is at 1:32 PM (7.4 ft above MLLW).
Low tide at Roche Harbor, San Juan Island on October 18, 2026 is at 4:26 AM (0.7 ft).
Today's tidal range at Roche Harbor, San Juan Island is 6.7 ft (highest high 7.4 ft, lowest low 0.7 ft).
The nearest NOAA water temperature to Roche Harbor, San Juan Island is 51.4 F at buoy 46088 (19 mi away), as of October 18, 2026.
Sunrise 7:38 AM, sunset 6:18 PM (PDT); moon first quarter, 52% illuminated.
Predictions are NOAA CO-OPS tide predictions for station 9449834 (subordinate station), heights above MLLW.

Next 7 days at Roche Harbor, San Juan Island

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Oct 18today	4:26 AM0.7 ft	1:32 PM7.4 ft			7:38 AM	6:18 PM	52%
Mon Oct 19	5:30 AM1.2 ft	2:13 PM7.4 ft	9:09 PM5.4 ft	11:10 PM5.1 ft	7:39 AM	6:16 PM	62%
Tue Oct 20	6:34 AM1.6 ft	2:41 PM7.4 ft	9:16 PM4.8 ft		7:41 AM	6:14 PM	72%
Wed Oct 21	12:42 AM5.1 ft	7:32 AM1.9 ft	3:00 PM7.4 ft	9:24 PM4.0 ft	7:42 AM	6:12 PM	81%
Thu Oct 22	2:09 AM5.3 ft	8:22 AM2.4 ft	3:15 PM7.4 ft	9:40 PM3.0 ft	7:44 AM	6:10 PM	89%
Fri Oct 23	3:25 AM5.7 ft	9:06 AM2.9 ft	3:31 PM7.5 ft	10:02 PM1.7 ft	7:45 AM	6:08 PM	95%
Sat Oct 24	4:30 AM6.3 ft	9:47 AM3.6 ft	3:51 PM7.6 ft	10:30 PM0.4 ft	7:47 AM	6:06 PM	98%

Water temperature near Roche Harbor, San Juan Island

51.4 F (10.8 C)

NDBC buoy 46088 (NEW DUNGENESS - 17 NM NE of Port Angeles, WA), 19 mi away, observed 08:40 UTC October 18, 2026

Water temperature is the nearest NOAA reading to Roche Harbor, San Juan Island, 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 PDT with sunrise, sunset and moon illumination. CSV of today's tides for every Washington station.

October 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Thu Oct 1					7:13 AM	6:52 PM	71%
Fri Oct 2					7:14 AM	6:50 PM	61%
Sat Oct 3					7:16 AM	6:48 PM	51%
Sun Oct 4					7:17 AM	6:45 PM	40%
Mon Oct 5					7:18 AM	6:43 PM	30%
Tue Oct 6					7:20 AM	6:41 PM	21%
Wed Oct 7					7:21 AM	6:39 PM	13%
Thu Oct 8					7:23 AM	6:37 PM	7%
Fri Oct 9					7:24 AM	6:35 PM	2%
Sat Oct 10					7:26 AM	6:33 PM	0%
Sun Oct 11					7:27 AM	6:31 PM	0%
Mon Oct 12					7:29 AM	6:29 PM	3%
Tue Oct 13					7:30 AM	6:27 PM	7%
Wed Oct 14					7:32 AM	6:25 PM	14%
Thu Oct 15					7:33 AM	6:23 PM	22%
Fri Oct 16	2:39 AM-0.3 ft	11:31 AM7.4 ft			7:35 AM	6:21 PM	31%
Sat Oct 17	3:29 AM0.2 ft	12:37 PM7.4 ft			7:36 AM	6:19 PM	41%
Sun Oct 18today	4:26 AM0.7 ft	1:32 PM7.4 ft			7:38 AM	6:18 PM	52%
Mon Oct 19	5:30 AM1.2 ft	2:13 PM7.4 ft	9:09 PM5.4 ft	11:10 PM5.1 ft	7:39 AM	6:16 PM	62%
Tue Oct 20	6:34 AM1.6 ft	2:41 PM7.4 ft	9:16 PM4.8 ft		7:41 AM	6:14 PM	72%
Wed Oct 21	12:42 AM5.1 ft	7:32 AM1.9 ft	3:00 PM7.4 ft	9:24 PM4.0 ft	7:42 AM	6:12 PM	81%
Thu Oct 22	2:09 AM5.3 ft	8:22 AM2.4 ft	3:15 PM7.4 ft	9:40 PM3.0 ft	7:44 AM	6:10 PM	89%
Fri Oct 23	3:25 AM5.7 ft	9:06 AM2.9 ft	3:31 PM7.5 ft	10:02 PM1.7 ft	7:45 AM	6:08 PM	95%
Sat Oct 24	4:30 AM6.3 ft	9:47 AM3.6 ft	3:51 PM7.6 ft	10:30 PM0.4 ft	7:47 AM	6:06 PM	98%
Sun Oct 25	5:28 AM6.9 ft	10:28 AM4.4 ft	4:13 PM7.6 ft	11:02 PM-0.9 ft	7:49 AM	6:05 PM	100%
Mon Oct 26	6:23 AM7.4 ft	11:10 AM5.2 ft	4:38 PM7.7 ft	11:39 PM-1.9 ft	7:50 AM	6:03 PM	99%
Tue Oct 27	7:17 AM7.8 ft	11:54 AM6.0 ft	5:04 PM7.7 ft		7:52 AM	6:01 PM	96%
Wed Oct 28	12:20 AM-2.5 ft	8:14 AM8.1 ft	12:43 PM6.7 ft	5:33 PM7.7 ft	7:53 AM	5:59 PM	91%
Thu Oct 29	1:06 AM-2.7 ft	9:14 AM8.1 ft	1:40 PM7.1 ft	6:04 PM7.5 ft	7:55 AM	5:58 PM	85%
Fri Oct 30	1:56 AM-2.5 ft	10:18 AM8.1 ft	2:51 PM7.3 ft	6:39 PM7.1 ft	7:56 AM	5:56 PM	76%
Sat Oct 31	2:51 AM-2.0 ft	11:23 AM8.1 ft	4:33 PM7.1 ft	7:31 PM6.6 ft	7:58 AM	5:54 PM	67%

November 2026 tide table

Date	Tide 1	Tide 2	Tide 3	Tide 4	Sunrise	Sunset	Moon
Sun Nov 1	2:50 AM-1.1 ft	11:22 AM8.0 ft	6:31 PM6.4 ft	8:13 PM5.9 ft	7:00 AM	4:53 PM	56%
Mon Nov 2	3:54 AM-0.1 ft	12:12 PM8.0 ft	7:14 PM5.3 ft	10:05 PM5.3 ft	7:01 AM	4:51 PM	45%
Tue Nov 3	5:01 AM0.9 ft	12:52 PM8.0 ft	7:47 PM4.1 ft		7:03 AM	4:49 PM	35%
Wed Nov 4	12:07 AM5.1 ft	6:06 AM2.0 ft	1:26 PM8.0 ft	8:16 PM2.8 ft	7:04 AM	4:48 PM	25%
Thu Nov 5	1:56 AM5.4 ft	7:06 AM3.0 ft	1:53 PM7.9 ft	8:43 PM1.6 ft	7:06 AM	4:46 PM	16%
Fri Nov 6	3:16 AM6.1 ft	8:01 AM4.1 ft	2:15 PM7.8 ft	9:09 PM0.5 ft	7:07 AM	4:45 PM	9%
Sat Nov 7	4:20 AM6.8 ft	8:51 AM5.0 ft	2:34 PM7.7 ft	9:37 PM-0.4 ft	7:09 AM	4:43 PM	4%
Sun Nov 8	5:13 AM7.4 ft	9:40 AM5.8 ft	2:52 PM7.5 ft	10:05 PM-1.1 ft	7:11 AM	4:42 PM	1%
Mon Nov 9	6:01 AM7.8 ft	10:28 AM6.4 ft	3:12 PM7.4 ft	10:35 PM-1.4 ft	7:12 AM	4:41 PM	0%
Tue Nov 10	6:46 AM8.1 ft	11:19 AM6.9 ft	3:35 PM7.2 ft	11:08 PM-1.5 ft	7:14 AM	4:39 PM	1%
Wed Nov 11	7:30 AM8.2 ft	12:15 PM7.1 ft	3:59 PM7.0 ft	11:44 PM-1.4 ft	7:15 AM	4:38 PM	5%
Thu Nov 12	8:14 AM8.2 ft	1:23 PM7.2 ft	4:22 PM6.7 ft		7:17 AM	4:37 PM	10%
Fri Nov 13	12:23 AM-1.0 ft	9:00 AM8.1 ft			7:18 AM	4:35 PM	18%
Sat Nov 14	1:05 AM-0.6 ft	9:47 AM8.0 ft			7:20 AM	4:34 PM	26%
Sun Nov 15	1:51 AM-0.0 ft	10:32 AM7.9 ft			7:22 AM	4:33 PM	36%
Mon Nov 16	2:39 AM0.6 ft	11:11 AM7.9 ft			7:23 AM	4:32 PM	47%
Tue Nov 17	3:30 AM1.3 ft	11:41 AM7.8 ft	7:22 PM5.0 ft	9:44 PM4.8 ft	7:25 AM	4:31 PM	57%
Wed Nov 18	4:23 AM2.1 ft	12:05 PM7.8 ft	7:23 PM4.0 ft	11:29 PM4.7 ft	7:26 AM	4:30 PM	68%
Thu Nov 19	5:19 AM3.0 ft	12:26 PM7.8 ft	7:36 PM2.9 ft		7:28 AM	4:29 PM	77%
Fri Nov 20	1:19 AM5.0 ft	6:17 AM3.9 ft	12:48 PM7.8 ft	7:58 PM1.5 ft	7:29 AM	4:28 PM	85%
Sat Nov 21	2:50 AM5.8 ft	7:13 AM4.8 ft	1:12 PM7.9 ft	8:26 PM0.0 ft	7:31 AM	4:27 PM	92%
Sun Nov 22	3:56 AM6.6 ft	8:06 AM5.7 ft	1:37 PM8.0 ft	8:58 PM-1.3 ft	7:32 AM	4:26 PM	97%
Mon Nov 23	4:49 AM7.5 ft	8:57 AM6.5 ft	2:04 PM8.1 ft	9:36 PM-2.4 ft	7:33 AM	4:25 PM	99%
Tue Nov 24	5:39 AM8.1 ft	9:47 AM7.1 ft	2:34 PM8.2 ft	10:17 PM-3.2 ft	7:35 AM	4:24 PM	100%
Wed Nov 25	6:27 AM8.5 ft	10:38 AM7.5 ft	3:08 PM8.2 ft	11:01 PM-3.5 ft	7:36 AM	4:23 PM	98%
Thu Nov 26	7:16 AM8.7 ft	11:34 AM7.7 ft	3:50 PM8.0 ft	11:49 PM-3.3 ft	7:38 AM	4:22 PM	94%
Fri Nov 27	8:06 AM8.8 ft	12:38 PM7.6 ft	4:41 PM7.6 ft		7:39 AM	4:22 PM	88%
Sat Nov 28	12:39 AM-2.7 ft	8:56 AM8.7 ft	1:59 PM7.3 ft	5:44 PM7.0 ft	7:40 AM	4:21 PM	80%
Sun Nov 29	1:32 AM-1.8 ft	9:45 AM8.6 ft	3:42 PM6.5 ft	7:00 PM6.2 ft	7:42 AM	4:20 PM	71%
Mon Nov 30	2:26 AM-0.6 ft	10:29 AM8.5 ft	5:26 PM5.4 ft	8:32 PM5.4 ft	7:43 AM	4:20 PM	61%

How these predictions are made

Roche Harbor, San Juan Island is a subordinate station: NOAA derives its tides from the reference station Port Townsend by applying fixed offsets.

High tide time

+0h 33m

relative to Port Townsend

Low tide time

+0h 47m

relative to reference

High tide height

x0.90

ratio

Low tide height

x0.99

ratio

Nearby tide stations

Hanbury Point, Mosquito Pass, San Juan I.2.1 mi · next high 1:38 PM
Waldron Island, Puget Sound7.5 mi · next high 1:39 PM
Friday Harbor, San Juan Island7.9 mi · next high 1:43 PM
Kanaka Bay, San Juan Island9.2 mi · next high 1:14 PM
Orcas, Orcas Island9.4 mi · next high 1:32 PM
Shaw Island, Ferry Terminal, Harney Channel11 mi · next high 1:30 PM

Questions

What time is high tide at Roche Harbor, San Juan Island today?

High tide at Roche Harbor, San Juan Island, Washington on Sunday, October 18, 2026 is at 1:32 PM (7.4 ft above MLLW), NOAA prediction, local time.

What time is low tide at Roche Harbor, San Juan Island today?

Low tide at Roche Harbor, San Juan Island on Sunday, October 18, 2026 is at 4:26 AM (0.7 ft).

What is the water temperature at Roche Harbor, San Juan Island?

The nearest NOAA water-temperature reading to Roche Harbor, San Juan Island is 51.4 F at buoy 46088 (19 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 9449834.