Today's tide
Today's tides
ft above MLLW- Low3:04 AM2.0 ft
- High9:50 AM12.5 ft
- Low3:36 PM5.7 ft
- High9:45 PM13.8 ft
Tomorrow's tide (predicted)
Tomorrow's tides
ft above MLLW- Low4:26 AM1.4 ft
- High10:48 AM13.9 ft
- Low4:57 PM3.9 ft
- High10:51 PM14.7 ft
| Tide | Time | Height |
|---|---|---|
| Low | 3:04 AM | 2.0 ft |
| High | 9:50 AM | 12.5 ft |
| Low | 3:36 PM | 5.7 ft |
| High | 9:45 PM | 13.8 ft |
Best windows today
- Fishing6:00 to 9:00 AM
Dawn light with the incoming tide around the 9:50 AM high. Second window 4:00 to 7:00 PM.
- Tidepools & shellingNo daylight low today
No daylight low today. The next good one is Wednesday at 4:00 PM.
- Surfing4:00 to 7:00 PM
Mid tide from 4:00 to 7:00 PM. No wind sensor at this station.
- Shallow boat launchEnough water all day
Lowest is 2.0 ft at 3:04 AM.
Best windows tomorrow
- Fishing2:00 to 4:00 AM
Strongest flow of the outgoing tide, between the 9:45 PM high and 4:26 AM low. Second window 6:00 to 8:00 AM.
- Tidepools & shelling4:00 to 6:00 PM
The 3.9 ft low at 4:57 PM falls in full daylight. The tide returns fast here, so start heading back by 5:55 PM.
- Surfing7:00 to 9:00 AM
Mid tide from 7:00 to 9:00 AM. No wind sensor at this station.
- Shallow boat launchAvoid 4:00 to 5:00 AM
Under 1.5 ft around low water. Launch before 4:00 AM.
Next 7 days
October calendar →| Day | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Range, ft |
|---|---|---|---|---|---|
| TodayMon 5 | L3:04a2.0 | H9:50a12.5 | L3:36p5.7 | H9:45p13.8 | 11.8 |
| TueOct 6 | L4:26a1.4 | H10:48a13.9 | L4:57p3.9 | H10:51p14.7 | 13.3 |
| WedOct 7 | L5:22a0.6 | H11:35a15.2 | L5:49p1.9 | H11:46p15.5 | 14.9 |
| ThuOct 8 | L6:04a0.1 | H12:16p16.5 | L6:30p0.3 | 16.3 | |
| FriOct 9 | H12:35a16.2 | L6:41a−0.1 | H12:53p17.4 | L7:07p−1.0 | 18.3 |
| SatOct 10 | H1:18a16.5 | L7:13a0.1 | H1:28p17.9 | L7:40p−1.7 | 19.6 spring tide |
| SunOct 11 | H1:58a16.5 | L7:44a0.6 | H2:02p18.0 | L8:13p−1.9 | 19.9 spring tide |
Spring tides Saturday to Sunday. Lows drop to −1.9 ft, the best shelling days this week. Spring and neap tides
Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 9451321.
Nearby stations
Currents
Spike Rock
- Max ebb12:37 AM 3.1 kn
- Slack3:39 AM
- Max flood6:55 AM 4.1 kn
- Slack10:04 AM
- Max ebb1:41 PM 2.4 kn
- Slack4:26 PM
- Max flood7:20 PM 3.5 kn
- Slack9:46 PM
Current predictions for Spike Rock, 7 mi away. Currents near inlets can be strong. Not for navigation.
Station details
- Datum
- Mean lower low water
- Predictions
- NOAA, from this station's own tide records
- Live gauge
- None
- Coordinates
- 56.643° N, 133.152° W
- Time zone
- Alaska, UTC−8
- Station ID
- NOAA 9451321
About the tides at Castle Islands
Expect two roughly equal high tides a day at Duncan Canal, each arriving about 50 minutes later than the day before. Castle Islands sees a mean range of about 13.4 ft. Low tide can expose a wide area, and the return is fast. That is larger than most Alaska stations on this site. From the average lower low to the average higher high, the difference is 15.8 ft. Over the next two weeks the biggest daily range, 19.9 ft, comes on Sunday, and the smallest, 6.0 ft, on October 17. Looking a year ahead, predictions peak at 19.4 ft on December 24 and bottom out at −4.2 ft on July 5.
Predictions for Castle Islands come from this station's own tide records. There is no live sensor, so the table shows forecast only. NOAA measured the tide here from 1972 to 2024 to set up these predictions. The nearest other station is Beecher Pass, 7 mi away. For tidal currents, see Spike Rock.
Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.