How's the tide at Grand Isle today?
High water today at 11:59 pm (1.3 ft). Low water at 8:15 am (0.6 ft).
Times are local to Grand Isle (America/Chicago). Heights are feet above MLLW.
Grand Isle — today and tomorrow
TodaySunday, September 13
| Tide | Time | Height |
|---|---|---|
| Low | 8:15 am | 0.6 ft |
| High | 11:59 pm | 1.3 ft |
Sunrise 6:43 am · Sunset 7:07 pm · Moon 8% · Air 81–87 °F · Wind 2–3 kn · Rain 10% · Mostly sunny
Monday, September 14
| Tide | Time | Height |
|---|---|---|
| Low | 10:58 am | 0.5 ft |
Sunrise 6:44 am · Sunset 7:06 pm · Moon 14% · Air 82–88 °F · Wind 2–4 kn · Rain 4% · Mostly sunny
Grand Isle tide chart — next seven days
Today — Sunday, September 13
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 8:15 am | 0.6 ft | |
| High | 11:59 pm | 1.3 ft |
2 turns fall on this date. The next one lands after midnight and is listed under the following day.
Monday, September 14
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 10:58 am | 0.5 ft |
1 turns fall on this date. The next one lands after midnight and is listed under the following day.
Tuesday, September 15
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 12:40 am | 1.4 ft | |
| Low | 12:01 pm | 0.4 ft |
2 turns fall on this date. The next one lands after midnight and is listed under the following day.
Wednesday, September 16
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 1:26 am | 1.5 ft | |
| Low | 1:00 pm | 0.3 ft |
2 turns fall on this date. The next one lands after midnight and is listed under the following day.
Thursday, September 17
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 2:14 am | 1.5 ft | |
| Low | 2:03 pm | 0.3 ft |
2 turns fall on this date. The next one lands after midnight and is listed under the following day.
Friday, September 18
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 3:03 am | 1.6 ft | |
| Low | 3:10 pm | 0.3 ft |
2 turns fall on this date. The next one lands after midnight and is listed under the following day.
Saturday, September 19
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 3:55 am | 1.6 ft | |
| Low | 4:11 pm | 0.3 ft |
2 turns fall on this date. The next one lands after midnight and is listed under the following day.
Grand Isle tides — month by month
Every high and low water for September 2026 and October 2026.
Grand Isle tide calendar — September 2026
| Day | High water | Low water |
|---|---|---|
| 1 Tue | 1:53 am (1.2) | 12:00 pm (0.4) |
| 2 Wed | 2:07 am (1.4) | 1:05 pm (0.2) |
| 3 Thu | 2:39 am (1.5) | 2:15 pm (0.1) |
| 4 Fri | 3:28 am (1.7) | 3:27 pm (0.0) |
| 5 Sat | 4:32 am (1.7) | 4:35 pm (-0.1) |
| 6 Sun | 5:51 am (1.8) | 5:37 pm (-0.1) |
| 7 Mon | 7:18 am (1.7) | 6:33 pm (0.0) |
| 8 Tue | 8:39 am (1.6) | 7:25 pm (0.2) |
| 9 Wed | 9:57 am (1.5) | 8:15 pm (0.4) |
| 10 Thu | 11:20 am (1.3) | 9:03 pm (0.6) |
| 11 Fri | 1:36 am (0.7), 12:55 pm (1.2) | 4:07 am (0.7), 9:48 pm (0.9) |
| 12 Sat | 12:25 am (0.9), 2:58 pm (1.0), 11:50 pm (1.1) | 5:59 am (0.7), 5:25 pm (1.0) |
| 13 Sun · today | 11:59 pm (1.3) | 8:15 am (0.6) |
| 14 Mon | 10:58 am (0.5) | |
| 15 Tue | 12:40 am (1.4) | 12:01 pm (0.4) |
| 16 Wed | 1:26 am (1.5) | 1:00 pm (0.3) |
| 17 Thu | 2:14 am (1.5) | 2:03 pm (0.3) |
| 18 Fri | 3:03 am (1.6) | 3:10 pm (0.3) |
| 19 Sat | 3:55 am (1.6) | 4:11 pm (0.3) |
| 20 Sun | 4:54 am (1.6) | 5:00 pm (0.3) |
| 21 Mon | 6:01 am (1.5) | 5:40 pm (0.3) |
| 22 Tue | 7:14 am (1.5) | 6:12 pm (0.4) |
| 23 Wed | 8:25 am (1.4) | 6:38 pm (0.5) |
| 24 Thu | 9:38 am (1.3) | 6:55 pm (0.7) |
| 25 Fri | 11:05 am (1.2), 11:45 pm (1.0) | 5:59 pm (0.9) |
| 26 Sat | 1:05 pm (1.1), 11:28 pm (1.1) | 5:11 am (0.8), 4:58 pm (1.0) |
| 27 Sun | 11:16 pm (1.3) | 6:43 am (0.6) |
| 28 Mon | 11:05 pm (1.5) | 8:51 am (0.5) |
| 29 Tue | 11:48 pm (1.6) | 10:26 am (0.3) |
| 30 Wed | 11:34 am (0.2) |
Times local to Grand Isle, heights in feet above MLLW.
Grand Isle tide calendar — October 2026
| Day | High water | Low water |
|---|---|---|
| 1 Thu | 12:50 am (1.8) | 12:40 pm (0.1) |
| 2 Fri | 1:54 am (1.8) | 1:49 pm (0.0) |
| 3 Sat | 2:59 am (1.8) | 3:02 pm (0.1) |
| 4 Sun | 4:08 am (1.8) | 4:13 pm (0.1) |
| 5 Mon | 5:34 am (1.7) | 5:14 pm (0.3) |
| 6 Tue | 7:22 am (1.5) | 6:07 pm (0.5) |
| 7 Wed | 9:12 am (1.3) | 6:51 pm (0.7) |
| 8 Thu | 12:11 am (0.9), 11:11 am (1.2), 10:48 pm (1.0) | 2:21 am (0.9), 7:21 pm (0.9) |
| 9 Fri | 1:31 pm (1.1), 9:58 pm (1.2) | 4:48 am (0.7), 3:34 pm (1.1) |
| 10 Sat | 9:46 pm (1.4) | 6:54 am (0.6) |
| 11 Sun | 10:12 pm (1.5) | 8:26 am (0.4) |
| 12 Mon | 10:51 pm (1.6) | 9:35 am (0.3) |
| 13 Tue | 11:36 pm (1.6) | 10:32 am (0.3) |
| 14 Wed | 11:24 am (0.3) | |
| 15 Thu | 12:27 am (1.6) | 12:14 pm (0.2) |
| 16 Fri | 1:20 am (1.6) | 1:06 pm (0.3) |
| 17 Sat | 2:09 am (1.6) | 1:59 pm (0.3) |
| 18 Sun | 2:55 am (1.6) | 2:52 pm (0.3) |
| 19 Mon | 3:38 am (1.5) | 3:39 pm (0.4) |
| 20 Tue | 4:22 am (1.4) | 4:16 pm (0.5) |
| 21 Wed | 5:44 am (1.2) | 4:38 pm (0.6) |
| 22 Thu | 8:32 am (1.1), 10:34 pm (1.0) | 4:03 pm (0.8) |
| 23 Fri | 11:26 am (1.0), 9:50 pm (1.1) | 5:11 am (0.8), 3:02 pm (0.9) |
| 24 Sat | 9:41 pm (1.3) | 6:10 am (0.6) |
| 25 Sun | 9:35 pm (1.5) | 7:02 am (0.4) |
| 26 Mon | 9:50 pm (1.6) | 8:04 am (0.2) |
| 27 Tue | 10:28 pm (1.8) | 9:12 am (0.0) |
| 28 Wed | 11:23 pm (1.8) | 10:20 am (-0.1) |
| 29 Thu | 11:24 am (-0.2) | |
| 30 Fri | 12:30 am (1.9) | 12:27 pm (-0.2) |
| 31 Sat | 1:37 am (1.8) | 1:31 pm (-0.1) |
Times local to Grand Isle, heights in feet above MLLW.
Wind and weather at Grand Isle
Seven days from the National Weather Service forecast for this stretch of coast. Each row is the range across the whole day, not a reading for one moment.
| Day | Wind | Gusts | Air | Sky | Rain | Waves |
|---|---|---|---|---|---|---|
| Today | 2–3 kn SSW | 5 kn | 81–87 °F | Mostly sunny | 10 % | 0 ft 9 s |
| Mon, September 14 | 2–4 kn S | 6 kn | 82–88 °F | Mostly sunny | 4 % | 0 ft 5 s |
| Tue, September 15 | 2–8 kn E | 12 kn | 82–89 °F | Clear | 6 % | 1 ft 7 s |
| Wed, September 16 | 8–19 kn E | 27 kn | 83–88 °F | Mostly sunny | 46 % | 2 ft 6 s |
| Thu, September 17 | 15–19 kn E | 23 kn | 83–86 °F | Mostly sunny | 16 % | 2 ft 8 s |
| Fri, September 18 | 8–14 kn ENE | 18 kn | 83–86 °F | Mostly sunny | 26 % | 1 ft 7 s |
| Sat, September 19 | 5–8 kn E | 10 kn | 81–86 °F | Mostly sunny | 25 % | 0 ft |
Source: NOAA National Weather Service, forecast office LIX. Public domain. Wind in knots, from the direction given. Wave heights are the forecast for the water off this coast, not the surf on the beach.
Boating, beach and fishing at Grand Isle
The same forecast as above, read for three things people do here. Each verdict names what decided it.
| Day | Boating | Beach | Fishing |
|---|---|---|---|
| Today | Goodwind 3 kn or less | Good87 °F and dry | Goodlight wind, major window in daylight |
| Mon, September 14 | Goodwind 4 kn or less | Good88 °F and dry | Goodlight wind, major window in daylight |
| Tue, September 15 | Goodwind 8 kn or less | Good89 °F and dry | Goodlight wind, major window in daylight |
| Wed, September 16 | Poorgusts to 27 kn | Fair46% chance of rain | Poorgusts to 27 kn |
| Thu, September 17 | Fairgusts to 23 kn | Fairwind to 19 kn | Fairwind to 19 kn |
| Fri, September 18 | Goodwind 14 kn or less | Fairwind to 14 kn | Goodlight wind, major window in daylight |
| Sat, September 19 | Goodwind 8 kn or less | Good86 °F and dry | Goodlight wind, major window in daylight |
Boating turns to Poor at the National Weather Service small craft threshold — sustained wind of 22 kn, gusts of 26 kn, or seas of 5 ft — and to Fair at 15 kn or 3 ft. Beach weighs air temperature, chance of rain and wind.Fishing asks whether the day is fishable at all and whether a solunar major window falls in daylight; it is not a prediction of what will bite. None of this replaces the marine forecast before you go out.
Sun and moon
Today
Sunrise 6:43 am · Sunset 7:07 pm
Moon 8% lit, waxing
Tomorrow
Sunrise 6:44 am · Sunset 7:06 pm
Moon 14% lit, waxing
Solunar windows for Grand Isle
The moon pulls hardest when it is directly overhead or on the far side of the earth — the two major windows of about two hours. The shorter minor windows sit around moonrise and moonset. Anglers use them to pick a time on the water; they are computed from the moon's position, not measured.
Today — Sunday, September 13
- Major1:29 am – 3:29 amMoon underfoot
- Minor8:39 am – 9:39 amMoonrise
- Major1:51 pm – 3:51 pmMoon overhead
- Minor7:57 pm – 8:57 pmMoonset
Monday, September 14
- Major2:14 am – 4:14 amMoon underfoot
- Minor9:38 am – 10:38 amMoonrise
- Major2:37 pm – 4:37 pmMoon overhead
- Minor8:31 pm – 9:31 pmMoonset
Times are local to Grand Isle (America/Chicago).
Questions about Grand Isle tides
Answered from the same NOAA predictions as the table above; the solunar windows come from this page's own moon calculation. Where this page has no basis for an answer, there is no entry.
- What time is high tide in Grand Isle today?
- High water at 11:59 pm (1.3 ft), local time in Grand Isle. Heights are feet above MLLW. Because the tide runs on the moon rather than the clock, each turn falls roughly 50 minutes later tomorrow — the seven-day table above carries the shift.
- What time is low tide in Grand Isle today?
- Low water at 8:15 am (0.6 ft), local time in Grand Isle. A height below zero is a minus tide: the water falls further than MLLW, the level the heights are counted from.
- How many tides does Grand Isle get in a day?
- One high water and one low water on most days here — this stretch runs on a single daily cycle rather than the usual two. Over the seven days on this page that comes to 6 high waters and 7 low waters.
- What is the tidal range at Grand Isle?
- About 0.7 ft between today's lowest and highest water. Across the next seven days the water moves between 0.3 and 1.6 ft — a span of about 1.3 ft. The swing here follows the moon's angle to the equator: widest when the moon stands furthest north or south of it, narrowest about a week later as it crosses, and widest again a fortnight on.
- Which tide station do these Grand Isle tide times come from?
- NOAA station 8761724 — a reference station. East Point at the ocean end of the island, about 9 km from its centre. A reference station has its own long-running record, which is the strongest basis NOAA publishes. The predictions here are NOAA's, unchanged.
- What time zone are the Grand Isle tide times in?
- Every time on this page is clock time in Grand Isle — the America/Chicago zone, daylight saving already applied. Nothing has to be converted, and no time is shown in UTC except the retrieval stamp at the foot of the page.
- When are the solunar windows at Grand Isle today?
- The major windows run 1:29 am to 3:29 am and 1:51 pm to 3:51 pm, with shorter minor windows around moonrise and moonset. They are computed from the moon's position over Grand Isle, not measured — anglers use them to pick a time on the water. The moon is 8% lit and waxing.
- How far ahead does this Grand Isle tide chart go?
- Seven days in the table, and every high and low water for September 2026 and October 2026 in the calendar below it. The page is rebuilt every morning, so the first day is always today.
Grand Isle on the map
Grand Isle and the 4 nearest places with their own NOAA station. Every marker opens that place’s tide chart.
Choose a place on the map
Every marker opens its local tide chart.
Nearby tide charts
Where these times come from
- Source
- NOAA Center for Operational Oceanographic Products and Services — station 8761724, Grand Isle (reference station)
- Datum
- MLLW — heights in feet above mean lower low water
- Distance
- 9 km from the centre of Grand Isle
- Retrieved
- Sep 13, 2026, 2:29 PM UTC
- Licence
- Public domain (US federal government data). NOS requests that attribution be given whenever NOS material is reproduced and re-disseminated.
East Point at the ocean end of the island, about 9 km from its centre.
Predictions are issued by NOAA. The official NOAA data are authoritative. Not for navigation. Check the official NOAA station page before you rely on these times on the water.