Connecticut tide station
Cos Cob Harbor tide times
Today, Sunday, October 18, 2026: high tide at 5:27 AM (6.3 ft) and 5:43 PM (6.7 ft); low tide at 11:41 AM (1.9 ft). Water temperature 60.6 F at Kings Point (17 mi away).
High tide▲
5:27AM
6.3FT MLLW
high
Low tide▼
11:41AM
1.9FT MLLW
low
High tide▲
5:43PM
6.7FT MLLW
high
Water temp°F
60.6
15.9C
Kings Point, 17 mi
predicted height above MLLWnightnow (build time; your browser updates it)
As of 5:20 AM the tide is rising toward high tide at 5:27 AM (6.3 ft).
First Quarter 51% litSunrise 7:09 AMSunset 6:10 PMDaylight 11h 00mEDT
- High tide at Cos Cob Harbor, Connecticut on is at 5:27 AM (6.3 ft above MLLW) and 5:43 PM (6.7 ft above MLLW).
- Low tide at Cos Cob Harbor on is at 11:41 AM (1.9 ft).
- Today's tidal range at Cos Cob Harbor is 4.8 ft (highest high 6.7 ft, lowest low 1.9 ft).
- The nearest NOAA water temperature to Cos Cob Harbor is 60.6 F at Kings Point (17 mi away), as of .
- Sunrise 7:09 AM, sunset 6:10 PM (EDT); moon first quarter, 51% illuminated.
- Predictions are NOAA CO-OPS tide predictions for station 8469549 (subordinate station), heights above MLLW.
Next 7 days at Cos Cob Harbor
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Oct 18today | 5:27 AM6.3 ft | 11:41 AM1.9 ft | 5:43 PM6.7 ft | 7:09 AM | 6:10 PM | 51% | |
| Mon Oct 19 | 12:19 AM1.5 ft | 6:23 AM6.4 ft | 12:39 PM1.8 ft | 6:42 PM6.7 ft | 7:11 AM | 6:08 PM | 61% |
| Tue Oct 20 | 1:13 AM1.4 ft | 7:19 AM6.6 ft | 1:36 PM1.6 ft | 7:38 PM6.8 ft | 7:12 AM | 6:07 PM | 71% |
| Wed Oct 21 | 2:04 AM1.2 ft | 8:10 AM6.9 ft | 2:30 PM1.2 ft | 8:31 PM7.0 ft | 7:13 AM | 6:05 PM | 80% |
| Thu Oct 22 | 2:51 AM0.9 ft | 8:57 AM7.3 ft | 3:19 PM0.8 ft | 9:19 PM7.3 ft | 7:14 AM | 6:04 PM | 88% |
| Fri Oct 23 | 3:35 AM0.6 ft | 9:40 AM7.8 ft | 4:06 PM0.4 ft | 10:04 PM7.5 ft | 7:15 AM | 6:02 PM | 94% |
| Sat Oct 24 | 4:17 AM0.4 ft | 10:21 AM8.2 ft | 4:51 PM-0.0 ft | 10:47 PM7.7 ft | 7:16 AM | 6:01 PM | 98% |
Water temperature near Cos Cob Harbor
60.6 F (15.9 C)
NOAA CO-OPS station 8516945 (Kings Point sensor, 17 mi away), read 5:00 AM local, October 18, 2026
Over the past 30 days this sensor ranged from 60.6 to 75.2 F. Typical for October here is 63.4 F (5-year hourly mean; range 56.3 to 71.4), so today is 2.8 F below typical.
Water temperature is the nearest NOAA reading to Cos Cob Harbor, 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 | 6:51 AM | 6:37 PM | 72% | ||||
| Fri Oct 2 | 6:52 AM | 6:35 PM | 62% | ||||
| Sat Oct 3 | 6:53 AM | 6:33 PM | 52% | ||||
| Sun Oct 4 | 6:54 AM | 6:32 PM | 41% | ||||
| Mon Oct 5 | 6:55 AM | 6:30 PM | 31% | ||||
| Tue Oct 6 | 6:57 AM | 6:28 PM | 22% | ||||
| Wed Oct 7 | 6:58 AM | 6:27 PM | 14% | ||||
| Thu Oct 8 | 6:59 AM | 6:25 PM | 7% | ||||
| Fri Oct 9 | 7:00 AM | 6:24 PM | 3% | ||||
| Sat Oct 10 | 7:01 AM | 6:22 PM | 0% | ||||
| Sun Oct 11 | 7:02 AM | 6:20 PM | 0% | ||||
| Mon Oct 12 | 7:03 AM | 6:19 PM | 2% | ||||
| Tue Oct 13 | 7:04 AM | 6:17 PM | 7% | ||||
| Wed Oct 14 | 7:05 AM | 6:16 PM | 13% | ||||
| Thu Oct 15 | 7:06 AM | 6:14 PM | 21% | ||||
| Fri Oct 16 | 3:43 AM6.6 ft | 9:50 AM1.7 ft | 3:54 PM7.1 ft | 10:30 PM1.2 ft | 7:07 AM | 6:13 PM | 30% |
| Sat Oct 17 | 4:33 AM6.4 ft | 10:43 AM1.8 ft | 4:46 PM6.8 ft | 11:23 PM1.4 ft | 7:08 AM | 6:11 PM | 40% |
| Sun Oct 18today | 5:27 AM6.3 ft | 11:41 AM1.9 ft | 5:43 PM6.7 ft | 7:09 AM | 6:10 PM | 51% | |
| Mon Oct 19 | 12:19 AM1.5 ft | 6:23 AM6.4 ft | 12:39 PM1.8 ft | 6:42 PM6.7 ft | 7:11 AM | 6:08 PM | 61% |
| Tue Oct 20 | 1:13 AM1.4 ft | 7:19 AM6.6 ft | 1:36 PM1.6 ft | 7:38 PM6.8 ft | 7:12 AM | 6:07 PM | 71% |
| Wed Oct 21 | 2:04 AM1.2 ft | 8:10 AM6.9 ft | 2:30 PM1.2 ft | 8:31 PM7.0 ft | 7:13 AM | 6:05 PM | 80% |
| Thu Oct 22 | 2:51 AM0.9 ft | 8:57 AM7.3 ft | 3:19 PM0.8 ft | 9:19 PM7.3 ft | 7:14 AM | 6:04 PM | 88% |
| Fri Oct 23 | 3:35 AM0.6 ft | 9:40 AM7.8 ft | 4:06 PM0.4 ft | 10:04 PM7.5 ft | 7:15 AM | 6:02 PM | 94% |
| Sat Oct 24 | 4:17 AM0.4 ft | 10:21 AM8.2 ft | 4:51 PM-0.0 ft | 10:47 PM7.7 ft | 7:16 AM | 6:01 PM | 98% |
| Sun Oct 25 | 4:59 AM0.2 ft | 11:01 AM8.6 ft | 5:36 PM-0.3 ft | 11:31 PM7.7 ft | 7:17 AM | 5:59 PM | 100% |
| Mon Oct 26 | 5:42 AM0.1 ft | 11:43 AM8.8 ft | 6:21 PM-0.5 ft | 7:19 AM | 5:58 PM | 99% | |
| Tue Oct 27 | 12:16 AM7.7 ft | 6:26 AM0.1 ft | 12:28 PM8.9 ft | 7:08 PM-0.5 ft | 7:20 AM | 5:57 PM | 97% |
| Wed Oct 28 | 1:03 AM7.7 ft | 7:12 AM0.1 ft | 1:16 PM8.8 ft | 7:58 PM-0.4 ft | 7:21 AM | 5:55 PM | 92% |
| Thu Oct 29 | 1:54 AM7.5 ft | 8:03 AM0.3 ft | 2:08 PM8.5 ft | 8:51 PM-0.1 ft | 7:22 AM | 5:54 PM | 85% |
| Fri Oct 30 | 2:48 AM7.3 ft | 9:00 AM0.5 ft | 3:05 PM8.2 ft | 9:50 PM0.2 ft | 7:23 AM | 5:53 PM | 77% |
| Sat Oct 31 | 3:47 AM7.1 ft | 10:02 AM0.8 ft | 4:07 PM7.8 ft | 10:52 PM0.4 ft | 7:24 AM | 5:52 PM | 68% |
November 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Nov 1 | 3:51 AM7.0 ft | 10:10 AM0.9 ft | 4:13 PM7.5 ft | 10:57 PM0.6 ft | 6:26 AM | 4:50 PM | 57% |
| Mon Nov 2 | 4:57 AM7.0 ft | 11:20 AM1.0 ft | 5:22 PM7.3 ft | 6:27 AM | 4:49 PM | 46% | |
| Tue Nov 3 | 12:00 AM0.6 ft | 6:03 AM7.2 ft | 12:28 PM0.8 ft | 6:29 PM7.2 ft | 6:28 AM | 4:48 PM | 36% |
| Wed Nov 4 | 1:00 AM0.5 ft | 7:05 AM7.5 ft | 1:31 PM0.6 ft | 7:31 PM7.2 ft | 6:29 AM | 4:47 PM | 26% |
| Thu Nov 5 | 1:54 AM0.4 ft | 8:01 AM7.9 ft | 2:29 PM0.3 ft | 8:27 PM7.3 ft | 6:30 AM | 4:46 PM | 17% |
| Fri Nov 6 | 2:44 AM0.3 ft | 8:50 AM8.1 ft | 3:20 PM0.0 ft | 9:16 PM7.3 ft | 6:32 AM | 4:44 PM | 10% |
| Sat Nov 7 | 3:30 AM0.3 ft | 9:34 AM8.3 ft | 4:06 PM-0.1 ft | 10:01 PM7.3 ft | 6:33 AM | 4:43 PM | 5% |
| Sun Nov 8 | 4:12 AM0.4 ft | 10:14 AM8.3 ft | 4:48 PM-0.1 ft | 10:43 PM7.2 ft | 6:34 AM | 4:42 PM | 1% |
| Mon Nov 9 | 4:53 AM0.5 ft | 10:54 AM8.2 ft | 5:29 PM-0.1 ft | 11:24 PM7.1 ft | 6:35 AM | 4:41 PM | 0% |
| Tue Nov 10 | 5:32 AM0.7 ft | 11:32 AM8.0 ft | 6:07 PM0.1 ft | 6:36 AM | 4:40 PM | 1% | |
| Wed Nov 11 | 12:04 AM7.0 ft | 6:11 AM0.9 ft | 12:12 PM7.7 ft | 6:46 PM0.3 ft | 6:37 AM | 4:39 PM | 4% |
| Thu Nov 12 | 12:46 AM6.8 ft | 6:51 AM1.1 ft | 12:52 PM7.5 ft | 7:27 PM0.5 ft | 6:39 AM | 4:38 PM | 10% |
| Fri Nov 13 | 1:28 AM6.7 ft | 7:34 AM1.3 ft | 1:35 PM7.2 ft | 8:09 PM0.7 ft | 6:40 AM | 4:37 PM | 17% |
| Sat Nov 14 | 2:12 AM6.5 ft | 8:19 AM1.4 ft | 2:21 PM7.0 ft | 8:54 PM0.9 ft | 6:41 AM | 4:37 PM | 25% |
| Sun Nov 15 | 2:59 AM6.4 ft | 9:08 AM1.5 ft | 3:10 PM6.8 ft | 9:42 PM1.0 ft | 6:42 AM | 4:36 PM | 35% |
| Mon Nov 16 | 3:48 AM6.4 ft | 10:02 AM1.5 ft | 4:01 PM6.6 ft | 10:33 PM1.1 ft | 6:43 AM | 4:35 PM | 45% |
| Tue Nov 17 | 4:39 AM6.5 ft | 10:58 AM1.5 ft | 4:55 PM6.6 ft | 11:24 PM1.0 ft | 6:45 AM | 4:34 PM | 56% |
| Wed Nov 18 | 5:30 AM6.7 ft | 11:54 AM1.3 ft | 5:51 PM6.6 ft | 6:46 AM | 4:33 PM | 66% | |
| Thu Nov 19 | 12:14 AM0.9 ft | 6:22 AM7.0 ft | 12:49 PM0.9 ft | 6:46 PM6.7 ft | 6:47 AM | 4:33 PM | 76% |
| Fri Nov 20 | 1:03 AM0.7 ft | 7:11 AM7.4 ft | 1:42 PM0.5 ft | 7:39 PM6.8 ft | 6:48 AM | 4:32 PM | 84% |
| Sat Nov 21 | 1:51 AM0.5 ft | 7:58 AM7.8 ft | 2:33 PM0.1 ft | 8:29 PM7.0 ft | 6:49 AM | 4:31 PM | 91% |
| Sun Nov 22 | 2:39 AM0.3 ft | 8:44 AM8.2 ft | 3:22 PM-0.3 ft | 9:17 PM7.2 ft | 6:50 AM | 4:31 PM | 96% |
| Mon Nov 23 | 3:26 AM0.1 ft | 9:31 AM8.5 ft | 4:11 PM-0.6 ft | 10:05 PM7.4 ft | 6:52 AM | 4:30 PM | 99% |
| Tue Nov 24 | 4:14 AM-0.1 ft | 10:18 AM8.7 ft | 5:00 PM-0.8 ft | 10:54 PM7.5 ft | 6:53 AM | 4:30 PM | 100% |
| Wed Nov 25 | 5:04 AM-0.2 ft | 11:08 AM8.8 ft | 5:51 PM-0.8 ft | 11:45 PM7.4 ft | 6:54 AM | 4:29 PM | 98% |
| Thu Nov 26 | 5:56 AM-0.1 ft | 12:00 PM8.7 ft | 6:43 PM-0.7 ft | 6:55 AM | 4:29 PM | 95% | |
| Fri Nov 27 | 12:38 AM7.4 ft | 6:50 AM-0.0 ft | 12:55 PM8.4 ft | 7:37 PM-0.5 ft | 6:56 AM | 4:28 PM | 89% |
| Sat Nov 28 | 1:35 AM7.3 ft | 7:49 AM0.1 ft | 1:53 PM8.1 ft | 8:34 PM-0.2 ft | 6:57 AM | 4:28 PM | 81% |
| Sun Nov 29 | 2:34 AM7.2 ft | 8:51 AM0.3 ft | 2:54 PM7.7 ft | 9:33 PM-0.0 ft | 6:58 AM | 4:27 PM | 73% |
| Mon Nov 30 | 3:35 AM7.2 ft | 9:57 AM0.5 ft | 3:57 PM7.3 ft | 10:34 PM0.2 ft | 6:59 AM | 4:27 PM | 63% |
How these predictions are made
Cos Cob Harbor is a subordinate station: NOAA derives its tides from the reference station Bridgeport by applying fixed offsets.
High tide time
+0h 05m
relative to Bridgeport
Low tide time
+0h 11m
relative to reference
High tide height
x1.07
ratio
Low tide height
x1.08
ratio
Nearby tide stations
- Stamford3.0 mi · next high 5:29 PM
- Rye Beach5.5 mi · next high 5:30 AM
- Long Neck Point6.3 mi · next high 5:25 PM
- Bayville Bridge8.2 mi · next high 5:31 PM
- Rowayton, Fivemile River8.6 mi · next high 5:22 AM
- South Norwalk11 mi · next high 5:21 AM
Questions
What time is high tide at Cos Cob Harbor today?
High tide at Cos Cob Harbor, Connecticut on Sunday, October 18, 2026 is at 5:27 AM (6.3 ft above MLLW) and 5:43 PM (6.7 ft above MLLW), NOAA prediction, local time.
What time is low tide at Cos Cob Harbor today?
Low tide at Cos Cob Harbor on Sunday, October 18, 2026 is at 11:41 AM (1.9 ft).
What is the water temperature at Cos Cob Harbor?
The nearest NOAA water-temperature reading to Cos Cob Harbor is 60.6 F at Kings Point (17 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 8469549.