Composite Island Tide Chart
Alaska · NOAA Station 9452682 · 58.888°, -136.573°
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This Week’s Tides for Composite Island
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 2:55 AM | 2.0 ft |
| High | 8:59 AM | 10.2 ft |
| Low | 2:16 PM | 4.4 ft |
| High | 8:45 PM | 14.7 ft |
| Low | 4:08 AM | 1.9 ft |
| High | 10:31 AM | 9.9 ft |
| Low | 3:23 PM | 5.5 ft |
| High | 9:44 PM | 14.6 ft |
| Low | 5:16 AM | 1.5 ft |
| High | 11:55 AM | 10.5 ft |
| Low | 4:38 PM | 5.9 ft |
| High | 10:45 PM | 14.8 ft |
| Low | 6:12 AM | 0.9 ft |
| High | 12:52 PM | 11.3 ft |
| Low | 5:45 PM | 5.9 ft |
| High | 11:40 PM | 15.2 ft |
| Low | 6:58 AM | 0.3 ft |
| High | 1:33 PM | 12.1 ft |
| Low | 6:38 PM | 5.5 ft |
| High | 12:29 AM | 15.9 ft |
| Low | 7:37 AM | -0.4 ft |
| High | 2:07 PM | 12.8 ft |
| Low | 7:22 PM | 4.9 ft |
| High | 1:12 AM | 16.5 ft |
| Low | 8:12 AM | -0.9 ft |
| High | 2:37 PM | 13.5 ft |
| Low | 8:01 PM | 4.3 ft |
Composite Island Tide Table — Next 30 Days
Every high and low tide for the next month at Composite Island, with heights in feet (MLLW), the daily tidal range, and sunrise & sunset.
| Day | Sunrise | Sunset | Tides (time · ft, MLLW) | Range | |||
|---|---|---|---|---|---|---|---|
| Wed, Jul 22Today | 4:33 AM | 9:51 PM | Low2:55 AM2.0 ft | High8:59 AM10.2 ft | Low2:16 PM4.4 ft | High8:45 PM14.7 ft | 12.7 ft |
| Thu, Jul 23 | 4:35 AM | 9:49 PM | Low4:08 AM1.9 ft | High10:31 AM9.9 ft | Low3:23 PM5.5 ft | High9:44 PM14.6 ft | 12.7 ft |
| Fri, Jul 24 | 4:37 AM | 9:47 PM | Low5:16 AM1.5 ft | High11:55 AM10.5 ft | Low4:38 PM5.9 ft | High10:45 PM14.8 ft | 13.3 ft |
| Sat, Jul 25 | 4:39 AM | 9:45 PM | Low6:12 AM0.9 ft | High12:52 PM11.3 ft | Low5:45 PM5.9 ft | High11:40 PM15.2 ft | 14.3 ft |
| Sun, Jul 26 | 4:41 AM | 9:43 PM | Low6:58 AM0.3 ft | High1:33 PM12.1 ft | Low6:38 PM5.5 ft | — | 11.8 ft |
| Mon, Jul 27 | 4:43 AM | 9:41 PM | High12:29 AM15.9 ft | Low7:37 AM-0.4 ft | High2:07 PM12.8 ft | Low7:22 PM4.9 ft | 16.3 ft |
| Tue, Jul 28 | 4:45 AM | 9:39 PM | High1:12 AM16.5 ft | Low8:12 AM-0.9 ft | High2:37 PM13.5 ft | Low8:01 PM4.3 ft | 17.4 ft |
| Wed, Jul 29 | 4:48 AM | 9:37 PM | High1:50 AM16.9 ft | Low8:45 AM-1.3 ft | High3:06 PM14.0 ft | Low8:38 PM3.7 ft | 18.2 ft |
| Thu, Jul 30 | 4:50 AM | 9:34 PM | High2:27 AM17.1 ft | Low9:16 AM-1.6 ft | High3:34 PM14.5 ft | Low9:14 PM3.1 ft | 18.7 ft |
| Fri, Jul 31 | 4:52 AM | 9:32 PM | High3:02 AM17.0 ft | Low9:45 AM-1.6 ft | High4:02 PM15.0 ft | Low9:51 PM2.6 ft | 18.6 ft |
| Sat, Aug 1 | 4:54 AM | 9:30 PM | High3:38 AM16.5 ft | Low10:14 AM-1.2 ft | High4:31 PM15.4 ft | Low10:29 PM2.1 ft | 17.7 ft |
| Sun, Aug 2 | 4:56 AM | 9:27 PM | High4:16 AM15.7 ft | Low10:44 AM-0.6 ft | High5:01 PM15.8 ft | Low11:10 PM1.8 ft | 16.4 ft |
| Mon, Aug 3 | 4:59 AM | 9:25 PM | High4:57 AM14.6 ft | Low11:14 AM0.4 ft | High5:33 PM16.1 ft | Low11:56 PM1.5 ft | 15.7 ft |
| Tue, Aug 4 | 5:01 AM | 9:23 PM | High5:45 AM13.3 ft | Low11:47 AM1.6 ft | High6:10 PM16.3 ft | — | 14.7 ft |
| Wed, Aug 5 | 5:03 AM | 9:20 PM | Low12:50 AM1.4 ft | High6:43 AM11.9 ft | Low12:25 PM2.9 ft | High6:54 PM16.3 ft | 14.9 ft |
| Thu, Aug 6 | 5:05 AM | 9:18 PM | Low1:55 AM1.3 ft | High7:59 AM10.8 ft | Low1:15 PM4.2 ft | High7:51 PM16.3 ft | 15.0 ft |
| Fri, Aug 7 | 5:07 AM | 9:15 PM | Low3:13 AM1.1 ft | High9:36 AM10.4 ft | Low2:28 PM5.3 ft | High9:01 PM16.4 ft | 15.3 ft |
| Sat, Aug 8 | 5:10 AM | 9:13 PM | Low4:34 AM0.4 ft | High11:10 AM11.0 ft | Low4:02 PM5.7 ft | High10:18 PM16.8 ft | 16.4 ft |
| Sun, Aug 9 | 5:12 AM | 9:10 PM | Low5:44 AM-0.6 ft | High12:20 PM12.3 ft | Low5:27 PM5.2 ft | High11:29 PM17.7 ft | 18.3 ft |
| Mon, Aug 10 | 5:14 AM | 9:08 PM | Low6:42 AM-1.6 ft | High1:11 PM13.6 ft | Low6:33 PM4.2 ft | — | 15.2 ft |
| Tue, Aug 11 | 5:17 AM | 9:05 PM | High12:31 AM18.6 ft | Low7:31 AM-2.4 ft | High1:54 PM14.9 ft | Low7:29 PM3.0 ft | 21.0 ft |
| Wed, Aug 12 | 5:19 AM | 9:03 PM | High1:25 AM19.2 ft | Low8:16 AM-2.9 ft | High2:33 PM15.9 ft | Low8:19 PM1.9 ft | 22.1 ft |
| Thu, Aug 13 | 5:21 AM | 9:00 PM | High2:15 AM19.3 ft | Low8:56 AM-2.8 ft | High3:10 PM16.8 ft | Low9:06 PM1.0 ft | 22.1 ft |
| Fri, Aug 14 | 5:23 AM | 8:57 PM | High3:01 AM18.8 ft | Low9:34 AM-2.4 ft | High3:46 PM17.3 ft | Low9:51 PM0.5 ft | 21.2 ft |
| Sat, Aug 15 | 5:26 AM | 8:55 PM | High3:46 AM17.8 ft | Low10:10 AM-1.5 ft | High4:21 PM17.4 ft | Low10:35 PM0.3 ft | 19.3 ft |
| Sun, Aug 16 | 5:28 AM | 8:52 PM | High4:30 AM16.3 ft | Low10:45 AM-0.3 ft | High4:56 PM17.2 ft | Low11:20 PM0.4 ft | 17.5 ft |
| Mon, Aug 17 | 5:30 AM | 8:49 PM | High5:16 AM14.6 ft | Low11:19 AM1.2 ft | High5:31 PM16.6 ft | — | 15.4 ft |
| Tue, Aug 18 | 5:32 AM | 8:47 PM | Low12:06 AM0.9 ft | High6:05 AM12.9 ft | Low11:53 AM2.7 ft | High6:08 PM15.9 ft | 15.0 ft |
| Wed, Aug 19 | 5:35 AM | 8:44 PM | Low12:57 AM1.5 ft | High7:02 AM11.4 ft | Low12:30 PM4.2 ft | High6:50 PM15.0 ft | 13.5 ft |
| Thu, Aug 20 | 5:37 AM | 8:41 PM | Low1:59 AM2.2 ft | High8:19 AM10.2 ft | Low1:18 PM5.5 ft | High7:43 PM14.2 ft | 12.0 ft |
About Composite Island tides
Tide predictions for Composite Island come from NOAA station 9452682 (Alaska), computed from long-term harmonic analysis of observed water levels. Heights are shown in feet relative to MLLW (Mean Lower Low Water) — the same datum used on US nautical charts — so they line up directly with charted depths.
Composite Island typically sees a mixed semidiurnal tide, with two highs and two lows of differing heights each day. Use the curve above to time a harbor entrance, a beach walk, fishing a moving tide, or clearing a shallow bar — and remember that wind and pressure can push the real water level above or below prediction. The daily tidal range in the 30-day table shows how much water moves each day: bigger ranges around the new and full moon mean stronger currents.
Frequently asked
What time is high tide in Composite Island today?+
Today (Wednesday, July 22), high tide at Composite Island is at 8:59 AM (10.2 ft), 8:45 PM (14.7 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Composite Island today?+
Today, low tide at Composite Island is at 2:55 AM (2.0 ft), 2:16 PM (4.4 ft).
What tidal datum do these Composite Island tide heights use?+
All heights are given in feet relative to MLLW (Mean Lower Low Water), the standard NOAA chart datum for US tidal waters. A tide of 0.0 ft equals the chart datum; negative tides fall below it.
How accurate are these tide predictions?+
These are NOAA harmonic predictions — highly accurate for the astronomical tide. Real water levels can still differ with wind, barometric pressure, and storms, so always check current conditions before getting underway.
Never mistime a tide again.
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