Castle Islands tides
Duncan Canal · Alaska · NOAA 9451321Now
High tide
5:43 pm
Tide curve Today
7 days tap a day
Best fishing times
TodayWeekend outlook
How these times are worked out
Major periods are the two hours centred on the moon passing overhead or underfoot; minor periods are the hour centred on moonrise and moonset (solunar tables). Moon and sun times are computed for this station’s position with the PyEphem astronomy library; high and low tides are NOAA predictions. A period is marked best bet when it overlaps sunrise or sunset (within an hour) or contains a high or low tide. This is a traditional angler’s rule of thumb, not a guarantee, and it does not include weather, season or local rules.
Tide table, next 7 days
Today in Castle Islands, high tide is at 5:55 am and 5:43 pm and low tide at 11:11 am.
| Sunday 1 November7:02 am 4:09 pm · Last quarter | ||
|---|---|---|
| High | 5:55 am | 12.8 ft |
| Low | 11:11 am | 5.8 ft |
| High | 5:43 pm | 13.8 ft |
| Monday 2 November7:05 am 4:07 pm · Last quarter | ||
| Low | 12:10 am | 1.6 ft |
| High | 7:12 am | 12.9 ft |
| Low | 12:46 pm | 5.8 ft |
| High | 7:10 pm | 13.1 ft |
| Tuesday 3 November7:07 am 4:05 pm · Waning crescent | ||
| Low | 1:33 am | 2.2 ft |
| High | 8:20 am | 13.7 ft |
| Low | 2:32 pm | 4.7 ft |
| High | 8:30 pm | 13.2 ft |
| Wednesday 4 November7:09 am 4:03 pm · Waning crescent | ||
| Low | 2:50 am | 2.3 ft |
| High | 9:15 am | 14.8 ft |
| Low | 3:43 pm | 3.0 ft |
| High | 9:35 pm | 13.7 ft |
| Thursday 5 November7:11 am 4:00 pm · Waning crescent | ||
| Low | 3:47 am | 2.1 ft |
| High | 10:01 am | 15.8 ft |
| Low | 4:33 pm | 1.3 ft |
| High | 10:30 pm | 14.3 ft |
| Friday 6 November7:13 am 3:58 pm · Waning crescent | ||
| Low | 4:32 am | 2.0 ft |
| High | 10:42 am | 16.7 ft |
| Low | 5:13 pm | −0.1 ft |
| High | 11:18 pm | 14.9 ft |
| Saturday 7 November7:16 am 3:56 pm · Waning crescent | ||
| Low | 5:10 am | 2.1 ft |
| High | 11:20 am | 17.3 ft |
| Low | 5:48 pm | −1.0 ft |
Monthly tide tables
Printable tables with every high and low, sunrise, sunset and moon phases.
Nearby stations
- Beecher Pass, AK7 mi
- Anchor Point, AK9 mi
- Papke's Landing, AK9 mi
- Point Lockwood, AK9 mi
- Turn Point, AK13 mi
- Petersburg, AK14 mi
- Cosmos Point, AK20 mi
- Dry Strait, AK22 mi
King tides and lowest tides
The highest highs and lowest lows NOAA predicts here over the next 12 months, at least 4 days apart.
Highest high tides
Bars compare the five dates in each list. Tap a date for that month’s full table.
About this station
NOAA treats Castle Islands as a reference station: its tide predictions come straight from harmonic constants derived from measurements at this spot in Alaska.
- Avg. tidal range13.0 fthigh to next low
- Tides per day42 highs, 2 lows · 6 h 13 m apart
- Highest, 13 mo19.4 ft24 Dec 2026, 12:42 pm
- Lowest, 13 mo−4.2 ft5 Jul 2027, 8:35 am
- Minus tides218lows below zero, 13 mo
Nearest stations
56.6433° N, 133.1520° W · NOAA 9451321 · Alaska time
Castle Islands tide FAQ
What time is high tide in Castle Islands?
The next high tide is at 5:43 pm today (Sunday 1 November), reaching 13.8 ft. After that, the next high is at 7:12 am tomorrow (Monday 2 November) (12.9 ft).
What time is low tide in Castle Islands today?
There is one low tide today: 11:11 am (5.8 ft).
How many high and low tides are there each day in Castle Islands?
Most days bring two high tides and two low tides, about 6 h 13 min apart on average. The two highs of a day are usually similar in height. 54 of the 398 days in NOAA’s predictions have only three turns of the tide.
How big are the tides in Castle Islands?
Between a high and the following low the water typically moves 13.0 ft. A whole day’s spread averages 15.5 ft; the largest single change NOAA predicts over the next 13 months is 23.2 ft.
When is the highest tide of the year in Castle Islands?
NOAA’s highest prediction for the next 13 months is 19.4 ft on Thursday 24 December 2026 at 12:42 pm (full moon). Other king tides: 19.4 ft on 23 January 2027, 19.4 ft on 25 November 2026 and 19.0 ft on 1 October 2027. The lowest is −4.2 ft on 5 July 2027 at 8:35 am.
When is the best fishing time in Castle Islands today?
The best bets today are 4:45–6:45 am (moon overhead, around sunrise, with the 5:55 am high tide) and 5:11–7:11 pm (moon underfoot, with the 5:43 pm high tide). These solunar periods line up with sunrise, sunset or a turn of the tide.
Figures from NOAA CO-OPS predictions for station 9451321, next 13 months. Heights above MLLW.