Cos Cob Harbor Tide Chart
Connecticut · NOAA Station 8469549 · 41.017°, -73.597°
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This Week’s Tides for Cos Cob Harbor
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 12:33 AM | 1.0 ft |
| High | 6:26 AM | 6.5 ft |
| Low | 12:40 PM | 1.3 ft |
| High | 6:49 PM | 7.4 ft |
| Low | 1:30 AM | 1.0 ft |
| High | 7:26 AM | 6.3 ft |
| Low | 1:35 PM | 1.5 ft |
| High | 7:45 PM | 7.3 ft |
| Low | 2:25 AM | 1.0 ft |
| High | 8:24 AM | 6.3 ft |
| Low | 2:29 PM | 1.6 ft |
| High | 8:39 PM | 7.3 ft |
| Low | 3:17 AM | 1.0 ft |
| High | 9:17 AM | 6.4 ft |
| Low | 3:22 PM | 1.5 ft |
| High | 9:30 PM | 7.4 ft |
| Low | 4:05 AM | 0.9 ft |
| High | 10:06 AM | 6.6 ft |
| Low | 4:11 PM | 1.4 ft |
| High | 10:16 PM | 7.5 ft |
| Low | 4:50 AM | 0.7 ft |
| High | 10:49 AM | 6.8 ft |
| Low | 4:56 PM | 1.2 ft |
| High | 10:59 PM | 7.6 ft |
| Low | 5:31 AM | 0.6 ft |
| High | 11:30 AM | 7.0 ft |
| Low | 5:38 PM | 1.0 ft |
| High | 11:39 PM | 7.7 ft |
Cos Cob Harbor Tide Table — Next 30 Days
Every high and low tide for the next month at Cos Cob Harbor, with heights in feet (MLLW), the daily tidal range, and sunrise & sunset.
| Day | Sunrise | Sunset | Tides (time · ft, MLLW) | Range | |||
|---|---|---|---|---|---|---|---|
| Wed, Jul 22Today | 5:41 AM | 8:20 PM | Low12:33 AM1.0 ft | High6:26 AM6.5 ft | Low12:40 PM1.3 ft | High6:49 PM7.4 ft | 6.4 ft |
| Thu, Jul 23 | 5:42 AM | 8:20 PM | Low1:30 AM1.0 ft | High7:26 AM6.3 ft | Low1:35 PM1.5 ft | High7:45 PM7.3 ft | 6.3 ft |
| Fri, Jul 24 | 5:43 AM | 8:19 PM | Low2:25 AM1.0 ft | High8:24 AM6.3 ft | Low2:29 PM1.6 ft | High8:39 PM7.3 ft | 6.3 ft |
| Sat, Jul 25 | 5:43 AM | 8:18 PM | Low3:17 AM1.0 ft | High9:17 AM6.4 ft | Low3:22 PM1.5 ft | High9:30 PM7.4 ft | 6.4 ft |
| Sun, Jul 26 | 5:44 AM | 8:17 PM | Low4:05 AM0.9 ft | High10:06 AM6.6 ft | Low4:11 PM1.4 ft | High10:16 PM7.5 ft | 6.6 ft |
| Mon, Jul 27 | 5:45 AM | 8:16 PM | Low4:50 AM0.7 ft | High10:49 AM6.8 ft | Low4:56 PM1.2 ft | High10:59 PM7.6 ft | 6.9 ft |
| Tue, Jul 28 | 5:46 AM | 8:15 PM | Low5:31 AM0.6 ft | High11:30 AM7.0 ft | Low5:38 PM1.0 ft | High11:39 PM7.7 ft | 7.1 ft |
| Wed, Jul 29 | 5:47 AM | 8:14 PM | Low6:09 AM0.4 ft | High12:09 PM7.2 ft | Low6:19 PM0.9 ft | — | 6.8 ft |
| Thu, Jul 30 | 5:48 AM | 8:13 PM | High12:18 AM7.8 ft | Low6:46 AM0.3 ft | High12:46 PM7.4 ft | Low6:58 PM0.8 ft | 7.5 ft |
| Fri, Jul 31 | 5:49 AM | 8:12 PM | High12:56 AM7.8 ft | Low7:22 AM0.3 ft | High1:23 PM7.5 ft | Low7:38 PM0.7 ft | 7.5 ft |
| Sat, Aug 1 | 5:50 AM | 8:11 PM | High1:34 AM7.8 ft | Low7:58 AM0.3 ft | High2:00 PM7.7 ft | Low8:18 PM0.6 ft | 7.5 ft |
| Sun, Aug 2 | 5:51 AM | 8:10 PM | High2:14 AM7.7 ft | Low8:35 AM0.3 ft | High2:38 PM7.8 ft | Low9:01 PM0.6 ft | 7.5 ft |
| Mon, Aug 3 | 5:52 AM | 8:09 PM | High2:56 AM7.5 ft | Low9:14 AM0.4 ft | High3:19 PM7.9 ft | Low9:48 PM0.6 ft | 7.5 ft |
| Tue, Aug 4 | 5:53 AM | 8:07 PM | High3:42 AM7.3 ft | Low9:57 AM0.5 ft | High4:04 PM8.0 ft | Low10:40 PM0.6 ft | 7.5 ft |
| Wed, Aug 5 | 5:54 AM | 8:06 PM | High4:33 AM7.1 ft | Low10:46 AM0.7 ft | High4:54 PM8.0 ft | Low11:37 PM0.7 ft | 7.3 ft |
| Thu, Aug 6 | 5:55 AM | 8:05 PM | High5:29 AM6.8 ft | Low11:42 AM0.9 ft | High5:51 PM8.0 ft | — | 7.1 ft |
| Fri, Aug 7 | 5:56 AM | 8:04 PM | Low12:40 AM0.7 ft | High6:32 AM6.7 ft | Low12:44 PM1.0 ft | High6:55 PM8.0 ft | 7.3 ft |
| Sat, Aug 8 | 5:57 AM | 8:03 PM | Low1:45 AM0.7 ft | High7:39 AM6.7 ft | Low1:51 PM1.0 ft | High8:01 PM8.0 ft | 7.3 ft |
| Sun, Aug 9 | 5:58 AM | 8:01 PM | Low2:50 AM0.5 ft | High8:44 AM6.9 ft | Low2:57 PM0.8 ft | High9:06 PM8.2 ft | 7.7 ft |
| Mon, Aug 10 | 5:59 AM | 8:00 PM | Low3:51 AM0.2 ft | High9:46 AM7.2 ft | Low4:00 PM0.5 ft | High10:07 PM8.4 ft | 8.2 ft |
| Tue, Aug 11 | 6:00 AM | 7:59 PM | Low4:47 AM0.0 ft | High10:43 AM7.6 ft | Low4:58 PM0.3 ft | High11:02 PM8.6 ft | 8.6 ft |
| Wed, Aug 12 | 6:01 AM | 7:57 PM | Low5:39 AM-0.2 ft | High11:35 AM7.9 ft | Low5:53 PM0.0 ft | High11:55 PM8.6 ft | 8.8 ft |
| Thu, Aug 13 | 6:02 AM | 7:56 PM | Low6:28 AM-0.3 ft | High12:26 PM8.2 ft | Low6:45 PM0.0 ft | — | 8.5 ft |
| Fri, Aug 14 | 6:03 AM | 7:55 PM | High12:45 AM8.5 ft | Low7:14 AM-0.3 ft | High1:14 PM8.3 ft | Low7:36 PM0.0 ft | 8.8 ft |
| Sat, Aug 15 | 6:04 AM | 7:53 PM | High1:34 AM8.2 ft | Low7:59 AM-0.1 ft | High2:01 PM8.3 ft | Low8:25 PM0.1 ft | 8.4 ft |
| Sun, Aug 16 | 6:05 AM | 7:52 PM | High2:22 AM7.8 ft | Low8:43 AM0.2 ft | High2:47 PM8.2 ft | Low9:15 PM0.4 ft | 8.0 ft |
| Mon, Aug 17 | 6:06 AM | 7:50 PM | High3:11 AM7.4 ft | Low9:28 AM0.6 ft | High3:34 PM8.0 ft | Low10:05 PM0.7 ft | 7.4 ft |
| Tue, Aug 18 | 6:07 AM | 7:49 PM | High4:00 AM7.0 ft | Low10:15 AM1.0 ft | High4:22 PM7.7 ft | Low10:58 PM0.9 ft | 6.8 ft |
| Wed, Aug 19 | 6:08 AM | 7:48 PM | High4:52 AM6.7 ft | Low11:05 AM1.4 ft | High5:12 PM7.4 ft | Low11:52 PM1.2 ft | 6.2 ft |
| Thu, Aug 20 | 6:09 AM | 7:46 PM | High5:48 AM6.4 ft | Low11:59 AM1.7 ft | High6:07 PM7.2 ft | — | 5.5 ft |
About Cos Cob Harbor tides
Tide predictions for Cos Cob Harbor come from NOAA station 8469549 (Connecticut), 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.
Cos Cob Harbor 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 Cos Cob Harbor today?+
Today (Wednesday, July 22), high tide at Cos Cob Harbor is at 6:26 AM (6.5 ft), 6:49 PM (7.4 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Cos Cob Harbor today?+
Today, low tide at Cos Cob Harbor is at 12:33 AM (1.0 ft), 12:40 PM (1.3 ft).
What tidal datum do these Cos Cob Harbor 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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