Big Spanish Key Tide Chart
Florida · NOAA Station 8724246 · 24.788°, -81.412°
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This Week’s Tides for Big Spanish Key
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 2:17 AM | 0.8 ft |
| High | 7:51 AM | 3.3 ft |
| Low | 4:07 PM | 0.3 ft |
| High | 9:38 PM | 1.7 ft |
| Low | 3:03 AM | 0.9 ft |
| High | 8:45 AM | 3.3 ft |
| Low | 5:15 PM | 0.2 ft |
| High | 11:15 PM | 1.6 ft |
| Low | 3:54 AM | 1.0 ft |
| High | 9:42 AM | 3.3 ft |
| Low | 6:16 PM | 0.1 ft |
| High | 12:21 AM | 1.6 ft |
| Low | 4:48 AM | 1.0 ft |
| High | 10:37 AM | 3.4 ft |
| Low | 7:08 PM | 0.0 ft |
| High | 1:04 AM | 1.7 ft |
| Low | 5:43 AM | 1.0 ft |
| High | 11:27 AM | 3.5 ft |
| Low | 7:51 PM | 0.0 ft |
| High | 1:36 AM | 1.8 ft |
| Low | 6:33 AM | 1.0 ft |
| High | 12:13 PM | 3.6 ft |
| Low | 8:27 PM | -0.1 ft |
| High | 2:03 AM | 1.9 ft |
| Low | 7:18 AM | 0.9 ft |
| High | 12:56 PM | 3.8 ft |
| Low | 9:00 PM | -0.1 ft |
Big Spanish Key Tide Table — Next 30 Days
Every high and low tide for the next month at Big Spanish Key, with heights in feet (MLLW), the daily tidal range, and sunrise & sunset.
| Day | Sunrise | Sunset | Tides (time · ft, MLLW) | Range | |||
|---|---|---|---|---|---|---|---|
| Wed, Jul 22Today | 6:49 AM | 8:15 PM | Low2:17 AM0.8 ft | High7:51 AM3.3 ft | Low4:07 PM0.3 ft | High9:38 PM1.7 ft | 3.0 ft |
| Thu, Jul 23 | 6:49 AM | 8:15 PM | Low3:03 AM0.9 ft | High8:45 AM3.3 ft | Low5:15 PM0.2 ft | High11:15 PM1.6 ft | 3.1 ft |
| Fri, Jul 24 | 6:50 AM | 8:14 PM | Low3:54 AM1.0 ft | High9:42 AM3.3 ft | Low6:16 PM0.1 ft | — | 3.2 ft |
| Sat, Jul 25 | 6:50 AM | 8:14 PM | High12:21 AM1.6 ft | Low4:48 AM1.0 ft | High10:37 AM3.4 ft | Low7:08 PM0.0 ft | 3.4 ft |
| Sun, Jul 26 | 6:51 AM | 8:13 PM | High1:04 AM1.7 ft | Low5:43 AM1.0 ft | High11:27 AM3.5 ft | Low7:51 PM0.0 ft | 3.5 ft |
| Mon, Jul 27 | 6:51 AM | 8:13 PM | High1:36 AM1.8 ft | Low6:33 AM1.0 ft | High12:13 PM3.6 ft | Low8:27 PM-0.1 ft | 3.7 ft |
| Tue, Jul 28 | 6:52 AM | 8:12 PM | High2:03 AM1.9 ft | Low7:18 AM0.9 ft | High12:56 PM3.8 ft | Low9:00 PM-0.1 ft | 3.9 ft |
| Wed, Jul 29 | 6:52 AM | 8:12 PM | High2:30 AM2.1 ft | Low8:01 AM0.9 ft | High1:38 PM3.9 ft | Low9:30 PM-0.1 ft | 4.0 ft |
| Thu, Jul 30 | 6:52 AM | 8:11 PM | High2:58 AM2.4 ft | Low8:41 AM0.8 ft | High2:18 PM3.9 ft | Low9:59 PM0.0 ft | 3.9 ft |
| Fri, Jul 31 | 6:53 AM | 8:11 PM | High3:26 AM2.6 ft | Low9:23 AM0.8 ft | High2:59 PM3.9 ft | Low10:28 PM0.1 ft | 3.8 ft |
| Sat, Aug 1 | 6:53 AM | 8:10 PM | High3:55 AM2.8 ft | Low10:06 AM0.7 ft | High3:40 PM3.7 ft | Low10:57 PM0.2 ft | 3.5 ft |
| Sun, Aug 2 | 6:54 AM | 8:10 PM | High4:25 AM3.0 ft | Low10:54 AM0.6 ft | High4:23 PM3.4 ft | Low11:27 PM0.4 ft | 3.0 ft |
| Mon, Aug 3 | 6:54 AM | 8:09 PM | High4:56 AM3.2 ft | Low11:48 AM0.5 ft | High5:09 PM3.1 ft | Low11:58 PM0.6 ft | 2.7 ft |
| Tue, Aug 4 | 6:55 AM | 8:08 PM | High5:29 AM3.4 ft | Low12:49 PM0.4 ft | High6:03 PM2.6 ft | — | 3.0 ft |
| Wed, Aug 5 | 6:55 AM | 8:08 PM | Low12:32 AM0.7 ft | High6:07 AM3.5 ft | Low1:58 PM0.3 ft | High7:12 PM2.2 ft | 3.2 ft |
| Thu, Aug 6 | 6:56 AM | 8:07 PM | Low1:11 AM0.9 ft | High6:54 AM3.6 ft | Low3:13 PM0.2 ft | High8:46 PM1.8 ft | 3.4 ft |
| Fri, Aug 7 | 6:56 AM | 8:06 PM | Low1:59 AM1.0 ft | High7:55 AM3.7 ft | Low4:31 PM0.1 ft | High10:28 PM1.7 ft | 3.6 ft |
| Sat, Aug 8 | 6:57 AM | 8:06 PM | Low3:00 AM1.0 ft | High9:09 AM3.9 ft | Low5:44 PM-0.1 ft | High11:44 PM1.8 ft | 4.0 ft |
| Sun, Aug 9 | 6:57 AM | 8:05 PM | Low4:13 AM1.0 ft | High10:23 AM4.1 ft | Low6:48 PM-0.2 ft | — | 4.3 ft |
| Mon, Aug 10 | 6:58 AM | 8:04 PM | High12:37 AM1.9 ft | Low5:27 AM1.0 ft | High11:31 AM4.3 ft | Low7:41 PM-0.2 ft | 4.5 ft |
| Tue, Aug 11 | 6:58 AM | 8:03 PM | High1:19 AM2.2 ft | Low6:34 AM0.8 ft | High12:32 PM4.5 ft | Low8:26 PM-0.2 ft | 4.7 ft |
| Wed, Aug 12 | 6:58 AM | 8:03 PM | High1:56 AM2.5 ft | Low7:35 AM0.7 ft | High1:28 PM4.6 ft | Low9:06 PM-0.1 ft | 4.7 ft |
| Thu, Aug 13 | 6:59 AM | 8:02 PM | High2:31 AM2.8 ft | Low8:32 AM0.5 ft | High2:19 PM4.5 ft | Low9:43 PM0.1 ft | 4.4 ft |
| Fri, Aug 14 | 6:59 AM | 8:01 PM | High3:05 AM3.1 ft | Low9:25 AM0.4 ft | High3:08 PM4.3 ft | Low10:19 PM0.3 ft | 4.0 ft |
| Sat, Aug 15 | 7:00 AM | 8:00 PM | High3:39 AM3.4 ft | Low10:18 AM0.4 ft | High3:54 PM3.9 ft | Low10:53 PM0.5 ft | 3.5 ft |
| Sun, Aug 16 | 7:00 AM | 7:59 PM | High4:13 AM3.6 ft | Low11:12 AM0.4 ft | High4:39 PM3.5 ft | Low11:27 PM0.7 ft | 3.2 ft |
| Mon, Aug 17 | 7:01 AM | 7:58 PM | High4:47 AM3.7 ft | Low12:09 PM0.5 ft | High5:24 PM3.0 ft | — | 3.2 ft |
| Tue, Aug 18 | 7:01 AM | 7:58 PM | Low12:02 AM0.9 ft | High5:23 AM3.7 ft | Low1:09 PM0.5 ft | High6:14 PM2.5 ft | 3.2 ft |
| Wed, Aug 19 | 7:01 AM | 7:57 PM | Low12:37 AM1.0 ft | High6:04 AM3.7 ft | Low2:16 PM0.6 ft | High7:17 PM2.1 ft | 3.1 ft |
| Thu, Aug 20 | 7:02 AM | 7:56 PM | Low1:14 AM1.2 ft | High6:51 AM3.6 ft | Low3:27 PM0.6 ft | High9:04 PM1.9 ft | 3.0 ft |
About Big Spanish Key tides
Tide predictions for Big Spanish Key come from NOAA station 8724246 (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.
Big Spanish Key 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 Big Spanish Key today?+
Today (Wednesday, July 22), high tide at Big Spanish Key is at 7:51 AM (3.3 ft), 9:38 PM (1.7 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Big Spanish Key today?+
Today, low tide at Big Spanish Key is at 2:17 AM (0.8 ft), 4:07 PM (0.3 ft).
What tidal datum do these Big Spanish Key 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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