Porpoise Key, Big Spanish Channel Tide Chart
Florida · NOAA Station 8724196 · 24.718°, -81.352°
Want live wind, waves, and radar right on your chart? See it in Pathr →
This Week’s Tides for Porpoise Key, Big Spanish Channel
High and low tide times and heights (ft, MLLW) for the week ahead.
| Low | 12:17 AM | 0.5 ft |
| High | 7:55 AM | 1.2 ft |
| Low | 2:07 PM | 0.2 ft |
| High | 9:42 PM | 0.6 ft |
| Low | 1:03 AM | 0.6 ft |
| High | 8:49 AM | 1.2 ft |
| Low | 3:15 PM | 0.2 ft |
| High | 11:19 PM | 0.6 ft |
| Low | 1:54 AM | 0.7 ft |
| High | 9:46 AM | 1.2 ft |
| Low | 4:16 PM | 0.1 ft |
| High | 12:25 AM | 0.6 ft |
| Low | 2:48 AM | 0.7 ft |
| High | 10:41 AM | 1.2 ft |
| Low | 5:08 PM | 0.0 ft |
| High | 1:08 AM | 0.6 ft |
| Low | 3:43 AM | 0.7 ft |
| High | 11:31 AM | 1.3 ft |
| Low | 5:51 PM | 0.0 ft |
| High | 1:40 AM | 0.7 ft |
| Low | 4:33 AM | 0.6 ft |
| High | 12:17 PM | 1.3 ft |
| Low | 6:27 PM | -0.1 ft |
| High | 2:07 AM | 0.7 ft |
| Low | 5:18 AM | 0.6 ft |
| High | 1:00 PM | 1.4 ft |
| Low | 7:00 PM | -0.1 ft |
Porpoise Key, Big Spanish Channel Tide Table — Next 30 Days
Every high and low tide for the next month at Porpoise Key, Big Spanish Channel, 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 | Low12:17 AM0.5 ft | High7:55 AM1.2 ft | Low2:07 PM0.2 ft | High9:42 PM0.6 ft | 1.0 ft |
| Thu, Jul 23 | 6:49 AM | 8:14 PM | Low1:03 AM0.6 ft | High8:49 AM1.2 ft | Low3:15 PM0.2 ft | High11:19 PM0.6 ft | 1.0 ft |
| Fri, Jul 24 | 6:50 AM | 8:14 PM | Low1:54 AM0.7 ft | High9:46 AM1.2 ft | Low4:16 PM0.1 ft | — | 1.1 ft |
| Sat, Jul 25 | 6:50 AM | 8:13 PM | High12:25 AM0.6 ft | Low2:48 AM0.7 ft | High10:41 AM1.2 ft | Low5:08 PM0.0 ft | 1.2 ft |
| Sun, Jul 26 | 6:50 AM | 8:13 PM | High1:08 AM0.6 ft | Low3:43 AM0.7 ft | High11:31 AM1.3 ft | Low5:51 PM0.0 ft | 1.3 ft |
| Mon, Jul 27 | 6:51 AM | 8:13 PM | High1:40 AM0.7 ft | Low4:33 AM0.6 ft | High12:17 PM1.3 ft | Low6:27 PM-0.1 ft | 1.4 ft |
| Tue, Jul 28 | 6:51 AM | 8:12 PM | High2:07 AM0.7 ft | Low5:18 AM0.6 ft | High1:00 PM1.4 ft | Low7:00 PM-0.1 ft | 1.5 ft |
| Wed, Jul 29 | 6:52 AM | 8:11 PM | High2:34 AM0.8 ft | Low6:01 AM0.6 ft | High1:42 PM1.4 ft | Low7:30 PM0.0 ft | 1.4 ft |
| Thu, Jul 30 | 6:52 AM | 8:11 PM | High3:02 AM0.9 ft | Low6:41 AM0.5 ft | High2:22 PM1.4 ft | Low7:59 PM0.0 ft | 1.4 ft |
| Fri, Jul 31 | 6:53 AM | 8:10 PM | High3:30 AM0.9 ft | Low7:23 AM0.5 ft | High3:03 PM1.4 ft | Low8:28 PM0.1 ft | 1.3 ft |
| Sat, Aug 1 | 6:53 AM | 8:10 PM | High3:59 AM1.0 ft | Low8:06 AM0.5 ft | High3:44 PM1.4 ft | Low8:57 PM0.2 ft | 1.2 ft |
| Sun, Aug 2 | 6:54 AM | 8:09 PM | High4:29 AM1.1 ft | Low8:54 AM0.4 ft | High4:27 PM1.3 ft | Low9:27 PM0.3 ft | 1.0 ft |
| Mon, Aug 3 | 6:54 AM | 8:09 PM | High5:00 AM1.2 ft | Low9:48 AM0.3 ft | High5:13 PM1.1 ft | Low9:58 PM0.4 ft | 0.9 ft |
| Tue, Aug 4 | 6:55 AM | 8:08 PM | High5:33 AM1.2 ft | Low10:49 AM0.3 ft | High6:07 PM1.0 ft | Low10:32 PM0.5 ft | 0.9 ft |
| Wed, Aug 5 | 6:55 AM | 8:07 PM | High6:11 AM1.3 ft | Low11:58 AM0.2 ft | High7:16 PM0.8 ft | Low11:11 PM0.6 ft | 1.1 ft |
| Thu, Aug 6 | 6:56 AM | 8:07 PM | High6:58 AM1.3 ft | Low1:13 PM0.1 ft | High8:50 PM0.7 ft | Low11:59 PM0.6 ft | 1.2 ft |
| Fri, Aug 7 | 6:56 AM | 8:06 PM | High7:59 AM1.4 ft | Low2:31 PM0.0 ft | High10:32 PM0.6 ft | — | 1.4 ft |
| Sat, Aug 8 | 6:57 AM | 8:05 PM | Low1:00 AM0.7 ft | High9:13 AM1.4 ft | Low3:44 PM-0.1 ft | High11:48 PM0.6 ft | 1.5 ft |
| Sun, Aug 9 | 6:57 AM | 8:04 PM | Low2:13 AM0.7 ft | High10:27 AM1.5 ft | Low4:48 PM-0.1 ft | — | 1.6 ft |
| Mon, Aug 10 | 6:57 AM | 8:04 PM | High12:41 AM0.7 ft | Low3:27 AM0.6 ft | High11:35 AM1.6 ft | Low5:41 PM-0.1 ft | 1.7 ft |
| Tue, Aug 11 | 6:58 AM | 8:03 PM | High1:23 AM0.8 ft | Low4:34 AM0.5 ft | High12:36 PM1.6 ft | Low6:26 PM-0.1 ft | 1.7 ft |
| Wed, Aug 12 | 6:58 AM | 8:02 PM | High2:00 AM0.9 ft | Low5:35 AM0.4 ft | High1:32 PM1.7 ft | Low7:06 PM0.0 ft | 1.7 ft |
| Thu, Aug 13 | 6:59 AM | 8:01 PM | High2:35 AM1.0 ft | Low6:32 AM0.3 ft | High2:23 PM1.6 ft | Low7:43 PM0.1 ft | 1.5 ft |
| Fri, Aug 14 | 6:59 AM | 8:01 PM | High3:09 AM1.1 ft | Low7:25 AM0.3 ft | High3:12 PM1.6 ft | Low8:19 PM0.2 ft | 1.4 ft |
| Sat, Aug 15 | 7:00 AM | 8:00 PM | High3:43 AM1.2 ft | Low8:18 AM0.3 ft | High3:58 PM1.4 ft | Low8:53 PM0.3 ft | 1.1 ft |
| Sun, Aug 16 | 7:00 AM | 7:59 PM | High4:17 AM1.3 ft | Low9:12 AM0.3 ft | High4:43 PM1.3 ft | Low9:27 PM0.5 ft | 1.0 ft |
| Mon, Aug 17 | 7:00 AM | 7:58 PM | High4:51 AM1.4 ft | Low10:09 AM0.3 ft | High5:28 PM1.1 ft | Low10:02 PM0.6 ft | 1.1 ft |
| Tue, Aug 18 | 7:01 AM | 7:57 PM | High5:27 AM1.4 ft | Low11:09 AM0.3 ft | High6:18 PM0.9 ft | Low10:37 PM0.7 ft | 1.1 ft |
| Wed, Aug 19 | 7:01 AM | 7:56 PM | High6:08 AM1.3 ft | Low12:16 PM0.4 ft | High7:21 PM0.8 ft | Low11:14 PM0.8 ft | 0.9 ft |
| Thu, Aug 20 | 7:02 AM | 7:56 PM | High6:55 AM1.3 ft | Low1:27 PM0.4 ft | High9:08 PM0.7 ft | — | 0.9 ft |
About Porpoise Key, Big Spanish Channel tides
Tide predictions for Porpoise Key, Big Spanish Channel come from NOAA station 8724196 (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.
Porpoise Key, Big Spanish Channel 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 Porpoise Key, Big Spanish Channel today?+
Today (Wednesday, July 22), high tide at Porpoise Key, Big Spanish Channel is at 7:55 AM (1.2 ft), 9:42 PM (0.6 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Porpoise Key, Big Spanish Channel today?+
Today, low tide at Porpoise Key, Big Spanish Channel is at 12:17 AM (0.5 ft), 2:07 PM (0.2 ft).
What tidal datum do these Porpoise Key, Big Spanish Channel 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.
Porpoise Key, Big Spanish Channel tides, NOAA charts, live wind & waves, and smart routing — all on your phone with Pathr — free for your first two months on iOS.