Main Key, Barnes Sound Tide Chart
Florida · NOAA Station 8723571 · 25.240°, -80.400°
Want live wind, waves, and radar right on your chart? See it in Pathr →
This Week’s Tides for Main Key, Barnes Sound
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 3:24 AM | 0.2 ft |
| High | 8:19 AM | 0.4 ft |
| Low | 3:50 PM | 0.0 ft |
| High | 9:12 PM | 0.4 ft |
| Low | 4:20 AM | 0.2 ft |
| High | 9:12 AM | 0.4 ft |
| Low | 4:44 PM | 0.1 ft |
| High | 10:11 PM | 0.4 ft |
| Low | 5:15 AM | 0.2 ft |
| High | 10:07 AM | 0.4 ft |
| Low | 5:36 PM | 0.1 ft |
| High | 11:07 PM | 0.4 ft |
| Low | 6:08 AM | 0.2 ft |
| High | 11:03 AM | 0.4 ft |
| Low | 6:26 PM | 0.1 ft |
| High | 11:59 PM | 0.4 ft |
| Low | 6:57 AM | 0.2 ft |
| High | 11:56 AM | 0.4 ft |
| Low | 7:13 PM | 0.0 ft |
| High | 12:46 AM | 0.4 ft |
| Low | 7:42 AM | 0.2 ft |
| High | 12:45 PM | 0.4 ft |
| Low | 7:56 PM | 0.0 ft |
| High | 1:29 AM | 0.4 ft |
| Low | 8:25 AM | 0.2 ft |
| High | 1:30 PM | 0.4 ft |
| Low | 8:37 PM | 0.0 ft |
Main Key, Barnes Sound Tide Table — Next 30 Days
Every high and low tide for the next month at Main Key, Barnes Sound, with heights in feet (MLLW), the daily tidal range, and sunrise & sunset.
| Day | Sunrise | Sunset | Tides (time · ft, MLLW) | Range | |||
|---|---|---|---|---|---|---|---|
| Wed, Jul 22Today | 6:44 AM | 8:12 PM | Low3:24 AM0.2 ft | High8:19 AM0.4 ft | Low3:50 PM0.0 ft | High9:12 PM0.4 ft | 0.4 ft |
| Thu, Jul 23 | 6:44 AM | 8:12 PM | Low4:20 AM0.2 ft | High9:12 AM0.4 ft | Low4:44 PM0.1 ft | High10:11 PM0.4 ft | 0.3 ft |
| Fri, Jul 24 | 6:45 AM | 8:11 PM | Low5:15 AM0.2 ft | High10:07 AM0.4 ft | Low5:36 PM0.1 ft | High11:07 PM0.4 ft | 0.3 ft |
| Sat, Jul 25 | 6:45 AM | 8:11 PM | Low6:08 AM0.2 ft | High11:03 AM0.4 ft | Low6:26 PM0.1 ft | High11:59 PM0.4 ft | 0.3 ft |
| Sun, Jul 26 | 6:46 AM | 8:10 PM | Low6:57 AM0.2 ft | High11:56 AM0.4 ft | Low7:13 PM0.0 ft | — | 0.4 ft |
| Mon, Jul 27 | 6:46 AM | 8:10 PM | High12:46 AM0.4 ft | Low7:42 AM0.2 ft | High12:45 PM0.4 ft | Low7:56 PM0.0 ft | 0.4 ft |
| Tue, Jul 28 | 6:47 AM | 8:09 PM | High1:29 AM0.4 ft | Low8:25 AM0.2 ft | High1:30 PM0.4 ft | Low8:37 PM0.0 ft | 0.4 ft |
| Wed, Jul 29 | 6:47 AM | 8:09 PM | High2:09 AM0.5 ft | Low9:04 AM0.1 ft | High2:13 PM0.4 ft | Low9:15 PM0.0 ft | 0.5 ft |
| Thu, Jul 30 | 6:48 AM | 8:08 PM | High2:47 AM0.5 ft | Low9:42 AM0.1 ft | High2:55 PM0.4 ft | Low9:52 PM0.0 ft | 0.5 ft |
| Fri, Jul 31 | 6:48 AM | 8:07 PM | High3:24 AM0.5 ft | Low10:18 AM0.1 ft | High3:36 PM0.4 ft | Low10:29 PM0.0 ft | 0.5 ft |
| Sat, Aug 1 | 6:49 AM | 8:07 PM | High4:01 AM0.5 ft | Low10:54 AM0.1 ft | High4:17 PM0.5 ft | Low11:08 PM0.0 ft | 0.5 ft |
| Sun, Aug 2 | 6:49 AM | 8:06 PM | High4:37 AM0.5 ft | Low11:31 AM0.0 ft | High5:00 PM0.5 ft | Low11:49 PM0.1 ft | 0.5 ft |
| Mon, Aug 3 | 6:50 AM | 8:06 PM | High5:14 AM0.5 ft | Low12:12 PM0.0 ft | High5:45 PM0.5 ft | — | 0.5 ft |
| Tue, Aug 4 | 6:50 AM | 8:05 PM | Low12:33 AM0.1 ft | High5:53 AM0.5 ft | Low12:58 PM0.0 ft | High6:34 PM0.5 ft | 0.5 ft |
| Wed, Aug 5 | 6:51 AM | 8:04 PM | Low1:24 AM0.1 ft | High6:38 AM0.4 ft | Low1:51 PM0.0 ft | High7:29 PM0.4 ft | 0.4 ft |
| Thu, Aug 6 | 6:51 AM | 8:04 PM | Low2:22 AM0.2 ft | High7:29 AM0.4 ft | Low2:52 PM0.0 ft | High8:32 PM0.4 ft | 0.4 ft |
| Fri, Aug 7 | 6:51 AM | 8:03 PM | Low3:27 AM0.2 ft | High8:31 AM0.4 ft | Low3:58 PM0.0 ft | High9:41 PM0.5 ft | 0.5 ft |
| Sat, Aug 8 | 6:52 AM | 8:02 PM | Low4:36 AM0.2 ft | High9:42 AM0.4 ft | Low5:06 PM0.0 ft | High10:50 PM0.5 ft | 0.5 ft |
| Sun, Aug 9 | 6:52 AM | 8:01 PM | Low5:42 AM0.2 ft | High10:53 AM0.5 ft | Low6:10 PM-0.1 ft | High11:54 PM0.5 ft | 0.6 ft |
| Mon, Aug 10 | 6:53 AM | 8:01 PM | Low6:44 AM0.1 ft | High12:00 PM0.5 ft | Low7:10 PM-0.1 ft | — | 0.6 ft |
| Tue, Aug 11 | 6:53 AM | 8:00 PM | High12:51 AM0.5 ft | Low7:42 AM0.1 ft | High1:00 PM0.5 ft | Low8:06 PM-0.1 ft | 0.6 ft |
| Wed, Aug 12 | 6:54 AM | 7:59 PM | High1:42 AM0.5 ft | Low8:35 AM0.0 ft | High1:56 PM0.5 ft | Low8:58 PM-0.1 ft | 0.6 ft |
| Thu, Aug 13 | 6:54 AM | 7:58 PM | High2:30 AM0.6 ft | Low9:26 AM0.0 ft | High2:47 PM0.5 ft | Low9:48 PM-0.1 ft | 0.7 ft |
| Fri, Aug 14 | 6:55 AM | 7:57 PM | High3:15 AM0.6 ft | Low10:14 AM-0.1 ft | High3:36 PM0.6 ft | Low10:36 PM-0.1 ft | 0.7 ft |
| Sat, Aug 15 | 6:55 AM | 7:57 PM | High3:58 AM0.5 ft | Low11:01 AM-0.1 ft | High4:23 PM0.5 ft | Low11:23 PM0.0 ft | 0.6 ft |
| Sun, Aug 16 | 6:56 AM | 7:56 PM | High4:40 AM0.5 ft | Low11:47 AM0.0 ft | High5:09 PM0.5 ft | — | 0.5 ft |
| Mon, Aug 17 | 6:56 AM | 7:55 PM | Low12:10 AM0.1 ft | High5:21 AM0.5 ft | Low12:33 PM0.0 ft | High5:55 PM0.5 ft | 0.5 ft |
| Tue, Aug 18 | 6:56 AM | 7:54 PM | Low12:57 AM0.1 ft | High6:03 AM0.5 ft | Low1:20 PM0.1 ft | High6:42 PM0.5 ft | 0.4 ft |
| Wed, Aug 19 | 6:57 AM | 7:53 PM | Low1:47 AM0.2 ft | High6:46 AM0.4 ft | Low2:11 PM0.1 ft | High7:32 PM0.4 ft | 0.3 ft |
| Thu, Aug 20 | 6:57 AM | 7:52 PM | Low2:40 AM0.3 ft | High7:33 AM0.4 ft | Low3:06 PM0.2 ft | High8:27 PM0.4 ft | 0.2 ft |
About Main Key, Barnes Sound tides
Tide predictions for Main Key, Barnes Sound come from NOAA station 8723571 (Florida), 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.
Main Key, Barnes Sound 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 Main Key, Barnes Sound today?+
Today (Wednesday, July 22), high tide at Main Key, Barnes Sound is at 8:19 AM (0.4 ft), 9:12 PM (0.4 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Main Key, Barnes Sound today?+
Today, low tide at Main Key, Barnes Sound is at 3:24 AM (0.2 ft), 3:50 PM (0.0 ft).
What tidal datum do these Main Key, Barnes Sound 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.
Main Key, Barnes Sound tides, NOAA charts, live wind & waves, and smart routing — all on your phone with Pathr — free for your first two months on iOS.