California tide station
Mad River Slough, Arcata Bay tide times
Today, Sunday, October 18, 2026: high tide at 8:04 AM (5.4 ft) and 6:08 PM (6.2 ft); low tide at 12:25 AM (0.9 ft) and 12:24 PM (4.4 ft). Water temperature 57.4 F at buoy HBXC1 (6.6 mi away).
Low tide▼
12:25AM
0.9FT MLLW
low
High tide▲
8:04AM
5.4FT MLLW
high
Low tide▼
12:24PM
4.4FT MLLW
low
High tide▲
6:08PM
6.2FT MLLW
high
Water temp°F
57.4
14.1C
buoy HBXC1, 6.6 mi
predicted height above MLLWnightnow (build time; your browser updates it)
As of 2:20 AM the tide is rising toward high tide at 8:04 AM (5.4 ft).
First Quarter 52% litSunrise 7:32 AMSunset 6:32 PMDaylight 11h 00mPDT
- High tide at Mad River Slough, Arcata Bay, California on is at 8:04 AM (5.4 ft above MLLW) and 6:08 PM (6.2 ft above MLLW).
- Low tide at Mad River Slough, Arcata Bay on is at 12:25 AM (0.9 ft) and 12:24 PM (4.4 ft).
- Today's tidal range at Mad River Slough, Arcata Bay is 5.3 ft (highest high 6.2 ft, lowest low 0.9 ft).
- The nearest NOAA water temperature to Mad River Slough, Arcata Bay is 57.4 F at buoy HBXC1 (6.6 mi away), as of .
- Sunrise 7:32 AM, sunset 6:32 PM (PDT); moon first quarter, 52% illuminated.
- Predictions are NOAA CO-OPS tide predictions for station 9418865 (subordinate station), heights above MLLW.
Next 7 days at Mad River Slough, Arcata Bay
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Oct 18today | 12:25 AM0.9 ft | 8:04 AM5.4 ft | 12:24 PM4.4 ft | 6:08 PM6.2 ft | 7:32 AM | 6:32 PM | 52% |
| Mon Oct 19 | 1:28 AM1.0 ft | 9:00 AM5.6 ft | 1:51 PM4.1 ft | 7:26 PM6.0 ft | 7:33 AM | 6:30 PM | 62% |
| Tue Oct 20 | 2:25 AM1.0 ft | 9:40 AM5.9 ft | 3:00 PM3.5 ft | 8:38 PM6.0 ft | 7:34 AM | 6:29 PM | 72% |
| Wed Oct 21 | 3:13 AM1.0 ft | 10:12 AM6.3 ft | 3:53 PM2.8 ft | 9:42 PM6.1 ft | 7:35 AM | 6:27 PM | 81% |
| Thu Oct 22 | 3:56 AM1.1 ft | 10:41 AM6.8 ft | 4:38 PM1.9 ft | 10:40 PM6.3 ft | 7:36 AM | 6:26 PM | 89% |
| Fri Oct 23 | 4:34 AM1.3 ft | 11:09 AM7.4 ft | 5:19 PM1.0 ft | 11:34 PM6.5 ft | 7:37 AM | 6:24 PM | 95% |
| Sat Oct 24 | 5:11 AM1.5 ft | 11:38 AM7.9 ft | 6:00 PM0.2 ft | 7:38 AM | 6:23 PM | 98% |
Water temperature near Mad River Slough, Arcata Bay
57.4 F (14.1 C)
NDBC buoy HBXC1 (Humboldt, CA), 6.6 mi away, observed 08:45 UTC October 18, 2026
Water temperature is the nearest NOAA reading to Mad River Slough, Arcata Bay, 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
October 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Thu Oct 1 | 7:14 AM | 6:59 PM | 71% | ||||
| Fri Oct 2 | 7:15 AM | 6:57 PM | 61% | ||||
| Sat Oct 3 | 7:16 AM | 6:55 PM | 51% | ||||
| Sun Oct 4 | 7:17 AM | 6:54 PM | 40% | ||||
| Mon Oct 5 | 7:18 AM | 6:52 PM | 30% | ||||
| Tue Oct 6 | 7:19 AM | 6:50 PM | 21% | ||||
| Wed Oct 7 | 7:20 AM | 6:49 PM | 13% | ||||
| Thu Oct 8 | 7:21 AM | 6:47 PM | 7% | ||||
| Fri Oct 9 | 7:22 AM | 6:46 PM | 2% | ||||
| Sat Oct 10 | 7:23 AM | 6:44 PM | 0% | ||||
| Sun Oct 11 | 7:24 AM | 6:42 PM | 0% | ||||
| Mon Oct 12 | 7:25 AM | 6:41 PM | 3% | ||||
| Tue Oct 13 | 7:26 AM | 6:39 PM | 7% | ||||
| Wed Oct 14 | 7:27 AM | 6:38 PM | 14% | ||||
| Thu Oct 15 | 7:28 AM | 6:36 PM | 22% | ||||
| Fri Oct 16 | 5:47 AM5.4 ft | 9:59 AM4.2 ft | 4:02 PM6.9 ft | 11:26 PM0.6 ft | 7:29 AM | 6:35 PM | 31% |
| Sat Oct 17 | 6:55 AM5.3 ft | 10:59 AM4.4 ft | 4:57 PM6.5 ft | 7:31 AM | 6:33 PM | 41% | |
| Sun Oct 18today | 12:25 AM0.9 ft | 8:04 AM5.4 ft | 12:24 PM4.4 ft | 6:08 PM6.2 ft | 7:32 AM | 6:32 PM | 52% |
| Mon Oct 19 | 1:28 AM1.0 ft | 9:00 AM5.6 ft | 1:51 PM4.1 ft | 7:26 PM6.0 ft | 7:33 AM | 6:30 PM | 62% |
| Tue Oct 20 | 2:25 AM1.0 ft | 9:40 AM5.9 ft | 3:00 PM3.5 ft | 8:38 PM6.0 ft | 7:34 AM | 6:29 PM | 72% |
| Wed Oct 21 | 3:13 AM1.0 ft | 10:12 AM6.3 ft | 3:53 PM2.8 ft | 9:42 PM6.1 ft | 7:35 AM | 6:27 PM | 81% |
| Thu Oct 22 | 3:56 AM1.1 ft | 10:41 AM6.8 ft | 4:38 PM1.9 ft | 10:40 PM6.3 ft | 7:36 AM | 6:26 PM | 89% |
| Fri Oct 23 | 4:34 AM1.3 ft | 11:09 AM7.4 ft | 5:19 PM1.0 ft | 11:34 PM6.5 ft | 7:37 AM | 6:24 PM | 95% |
| Sat Oct 24 | 5:11 AM1.5 ft | 11:38 AM7.9 ft | 6:00 PM0.2 ft | 7:38 AM | 6:23 PM | 98% | |
| Sun Oct 25 | 12:25 AM6.6 ft | 5:48 AM1.9 ft | 12:09 PM8.4 ft | 6:42 PM-0.6 ft | 7:39 AM | 6:22 PM | 100% |
| Mon Oct 26 | 1:17 AM6.7 ft | 6:25 AM2.3 ft | 12:41 PM8.8 ft | 7:24 PM-1.2 ft | 7:41 AM | 6:20 PM | 99% |
| Tue Oct 27 | 2:09 AM6.6 ft | 7:04 AM2.7 ft | 1:17 PM9.0 ft | 8:10 PM-1.5 ft | 7:42 AM | 6:19 PM | 96% |
| Wed Oct 28 | 3:02 AM6.5 ft | 7:45 AM3.1 ft | 1:56 PM9.0 ft | 8:58 PM-1.5 ft | 7:43 AM | 6:18 PM | 91% |
| Thu Oct 29 | 4:00 AM6.3 ft | 8:31 AM3.5 ft | 2:42 PM8.8 ft | 9:51 PM-1.4 ft | 7:44 AM | 6:16 PM | 85% |
| Fri Oct 30 | 5:01 AM6.1 ft | 9:25 AM3.8 ft | 3:34 PM8.4 ft | 10:48 PM-1.0 ft | 7:45 AM | 6:15 PM | 76% |
| Sat Oct 31 | 6:07 AM6.0 ft | 10:32 AM3.9 ft | 4:37 PM7.8 ft | 11:50 PM-0.6 ft | 7:46 AM | 6:14 PM | 67% |
November 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Nov 1 | 6:14 AM6.1 ft | 10:54 AM3.9 ft | 4:52 PM7.2 ft | 11:54 PM-0.1 ft | 6:48 AM | 5:13 PM | 56% |
| Mon Nov 2 | 7:15 AM6.4 ft | 12:24 PM3.5 ft | 6:14 PM6.7 ft | 6:49 AM | 5:11 PM | 45% | |
| Tue Nov 3 | 12:55 AM0.3 ft | 8:06 AM6.8 ft | 1:44 PM2.7 ft | 7:35 PM6.3 ft | 6:50 AM | 5:10 PM | 35% |
| Wed Nov 4 | 1:52 AM0.7 ft | 8:49 AM7.3 ft | 2:49 PM1.8 ft | 8:50 PM6.2 ft | 6:51 AM | 5:09 PM | 25% |
| Thu Nov 5 | 2:42 AM1.1 ft | 9:27 AM7.7 ft | 3:42 PM1.0 ft | 9:57 PM6.2 ft | 6:52 AM | 5:08 PM | 16% |
| Fri Nov 6 | 3:27 AM1.6 ft | 10:02 AM8.1 ft | 4:29 PM0.2 ft | 10:56 PM6.2 ft | 6:54 AM | 5:07 PM | 9% |
| Sat Nov 7 | 4:08 AM2.1 ft | 10:34 AM8.3 ft | 5:10 PM-0.3 ft | 11:49 PM6.3 ft | 6:55 AM | 5:06 PM | 4% |
| Sun Nov 8 | 4:47 AM2.6 ft | 11:04 AM8.4 ft | 5:49 PM-0.7 ft | 6:56 AM | 5:05 PM | 1% | |
| Mon Nov 9 | 12:37 AM6.3 ft | 5:24 AM3.1 ft | 11:35 AM8.4 ft | 6:26 PM-0.8 ft | 6:57 AM | 5:04 PM | 0% |
| Tue Nov 10 | 1:22 AM6.2 ft | 6:01 AM3.5 ft | 12:05 PM8.3 ft | 7:03 PM-0.8 ft | 6:58 AM | 5:03 PM | 1% |
| Wed Nov 11 | 2:05 AM6.1 ft | 6:37 AM3.8 ft | 12:37 PM8.1 ft | 7:41 PM-0.6 ft | 6:59 AM | 5:02 PM | 5% |
| Thu Nov 12 | 2:49 AM6.0 ft | 7:14 AM4.0 ft | 1:10 PM7.8 ft | 8:21 PM-0.4 ft | 7:01 AM | 5:01 PM | 10% |
| Fri Nov 13 | 3:35 AM5.9 ft | 7:53 AM4.2 ft | 1:47 PM7.4 ft | 9:03 PM-0.1 ft | 7:02 AM | 5:00 PM | 18% |
| Sat Nov 14 | 4:24 AM5.7 ft | 8:39 AM4.3 ft | 2:28 PM7.0 ft | 9:47 PM0.2 ft | 7:03 AM | 4:59 PM | 26% |
| Sun Nov 15 | 5:16 AM5.7 ft | 9:38 AM4.3 ft | 3:17 PM6.6 ft | 10:35 PM0.6 ft | 7:04 AM | 4:58 PM | 36% |
| Mon Nov 16 | 6:07 AM5.8 ft | 10:52 AM4.2 ft | 4:20 PM6.1 ft | 11:25 PM0.9 ft | 7:05 AM | 4:57 PM | 47% |
| Tue Nov 17 | 6:52 AM6.1 ft | 12:13 PM3.9 ft | 5:35 PM5.7 ft | 7:07 AM | 4:57 PM | 57% | |
| Wed Nov 18 | 12:15 AM1.2 ft | 7:32 AM6.5 ft | 1:23 PM3.2 ft | 6:54 PM5.5 ft | 7:08 AM | 4:56 PM | 68% |
| Thu Nov 19 | 1:04 AM1.5 ft | 8:07 AM6.9 ft | 2:21 PM2.3 ft | 8:09 PM5.5 ft | 7:09 AM | 4:55 PM | 77% |
| Fri Nov 20 | 1:51 AM1.9 ft | 8:41 AM7.5 ft | 3:10 PM1.4 ft | 9:19 PM5.6 ft | 7:10 AM | 4:54 PM | 85% |
| Sat Nov 21 | 2:37 AM2.2 ft | 9:14 AM8.1 ft | 3:55 PM0.3 ft | 10:23 PM5.9 ft | 7:11 AM | 4:54 PM | 92% |
| Sun Nov 22 | 3:22 AM2.6 ft | 9:49 AM8.6 ft | 4:40 PM-0.6 ft | 11:21 PM6.1 ft | 7:12 AM | 4:53 PM | 97% |
| Mon Nov 23 | 4:07 AM3.0 ft | 10:27 AM9.1 ft | 5:24 PM-1.3 ft | 7:13 AM | 4:53 PM | 99% | |
| Tue Nov 24 | 12:16 AM6.4 ft | 4:53 AM3.2 ft | 11:08 AM9.4 ft | 6:10 PM-1.9 ft | 7:15 AM | 4:52 PM | 100% |
| Wed Nov 25 | 1:09 AM6.5 ft | 5:40 AM3.4 ft | 11:52 AM9.6 ft | 6:57 PM-2.1 ft | 7:16 AM | 4:52 PM | 98% |
| Thu Nov 26 | 2:02 AM6.5 ft | 6:30 AM3.6 ft | 12:39 PM9.5 ft | 7:46 PM-2.0 ft | 7:17 AM | 4:51 PM | 94% |
| Fri Nov 27 | 2:55 AM6.5 ft | 7:24 AM3.6 ft | 1:31 PM9.1 ft | 8:37 PM-1.7 ft | 7:18 AM | 4:51 PM | 88% |
| Sat Nov 28 | 3:49 AM6.5 ft | 8:24 AM3.7 ft | 2:27 PM8.5 ft | 9:29 PM-1.2 ft | 7:19 AM | 4:50 PM | 80% |
| Sun Nov 29 | 4:44 AM6.6 ft | 9:32 AM3.6 ft | 3:29 PM7.7 ft | 10:22 PM-0.6 ft | 7:20 AM | 4:50 PM | 71% |
| Mon Nov 30 | 5:38 AM6.8 ft | 10:50 AM3.4 ft | 4:39 PM6.9 ft | 11:16 PM0.1 ft | 7:21 AM | 4:50 PM | 61% |
How these predictions are made
Mad River Slough, Arcata Bay is a subordinate station: NOAA derives its tides from the reference station HUMBOLDT BAY (North Spit) by applying fixed offsets.
High tide time
+0h 43m
relative to HUMBOLDT BAY (North Spit)
Low tide time
+0h 35m
relative to reference
High tide height
x1.12
ratio
Low tide height
x1.07
ratio
Nearby tide stations
- Arcata Wharf1.9 mi · next high 8:09 AM
- Samoa3.1 mi · next high 7:25 AM
- Eureka Slough Bridge4.0 mi · next high 7:54 AM
- Eureka4.1 mi · next high 7:47 AM
- Bucksport6.5 mi · next high 7:38 AM
- HUMBOLDT BAY (North Spit)7.7 mi · next high 7:21 AM
Questions
What time is high tide at Mad River Slough, Arcata Bay today?
High tide at Mad River Slough, Arcata Bay, California on Sunday, October 18, 2026 is at 8:04 AM (5.4 ft above MLLW) and 6:08 PM (6.2 ft above MLLW), NOAA prediction, local time.
What time is low tide at Mad River Slough, Arcata Bay today?
Low tide at Mad River Slough, Arcata Bay on Sunday, October 18, 2026 is at 12:25 AM (0.9 ft) and 12:24 PM (4.4 ft).
What is the water temperature at Mad River Slough, Arcata Bay?
The nearest NOAA water-temperature reading to Mad River Slough, Arcata Bay is 57.4 F at buoy HBXC1 (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 9418865.