The Tide Chart www.thetidechart.com September 2026 · generated 3 Sep 2026, 20:41
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Southwest Pass, Vermilion Bay · September 2026 20:41 · UTC−5
United States Louisiana 29.580° N · 92.035° W

Southwest Pass, Vermilion Bay Tide Chart

Tide predictions, solunar fishing times and marine weather for Southwest Pass, Vermilion Bay, United States — updated daily, free forever.

Rising
0.6 ft
High in 49m
0.6 ft at 9:30 PM
Last low tide: -0.9 ft at 1:40 PM

The water level is rising. Next high tide in 49 minutes (21:30).

6:46 AM 7:27 PM Coefficient 39 · low Calculated for Southwest Pass, Vermilion Bay's local time · UTC−5

At a glance

Wind 8 mph from S · gust 9 mph Waves 0.7 ft from SSW · 4 s Fish activity Slow 2 major + 2 minor periods Air temp 84° feels like 90° Water temp 88° Sea surface Pressure 29.91 inHg Steady UV index 8 High exposure Coefficient 39 47 morning · 39 afternoon

Pick a date

September 2026

Tides

Low 2:00 AM · 0.0 ft High 6:10 AM · 0.3 ft Low 1:40 PM · -0.9 ft High 9:30 PM · 0.6 ft
High Low Daylight · 12h 41m Major Minor

L 2:00 AM 0.0 ft H 6:10 AM 0.3 ft L 1:40 PM -0.9 ft H 9:30 PM 0.6 ft

Gauge station · FES2022 global tide model · heights referenced to Mean Sea Level · America/Chicago (UTC−5) · Why might this differ?

HAT
0.6 ft
highest astronomical tide
MSL
-0.2 ft
mean sea level — the chart's zero
LAT
-0.9 ft
lowest astronomical tide

The sun rises at 06:46 and sets at 19:27. Today brings 2 high tides and 2 low tides: high water at 06:10 (0.1 m) and 21:30 (0.2 m); low water at 02:00 (0.0 m) and 13:40 (-0.3 m). The sun crosses the local meridian at 13:07, its highest point of the day.

Hour by hour

Interpolated heights · Thursday 3 September
HourHeightTrend
12:00 AM 0.0 ft ↗ Rising
1:00 AM 0.0 ft ↗ Rising
2:00 AM 0.0 ft ↗ Rising
3:00 AM 0.1 ft ↗ Rising
4:00 AM 0.2 ft ↗ Rising
5:00 AM 0.3 ft ↗ Rising
6:00 AM 0.3 ft ↗ Rising
7:00 AM 0.3 ft ↘ Falling
8:00 AM 0.1 ft ↘ Falling
9:00 AM -0.1 ft ↘ Falling
10:00 AM -0.3 ft ↘ Falling
11:00 AM -0.6 ft ↘ Falling
HourHeightTrend
12:00 PM -0.8 ft ↘ Falling
1:00 PM -0.9 ft ↘ Falling
2:00 PM -0.9 ft ↗ Rising
3:00 PM -0.8 ft ↗ Rising
4:00 PM -0.6 ft ↗ Rising
5:00 PM -0.3 ft ↗ Rising
6:00 PM 0.0 ft ↗ Rising
7:00 PM 0.2 ft ↗ Rising
8:00 PM 0.5 ft ↗ Rising
9:00 PM 0.6 ft ↗ Rising
10:00 PM 0.6 ft ↘ Falling
11:00 PM 0.4 ft ↘ Falling

Sea & weather now

Conditions at Southwest Pass, Vermilion Bay right now, in station-local time.

Air temp 84°F Clear sky · feels like 90° · H 87° · L 82°
Water temp 88°F 87° to 88° today
Wind 8 mph S · Force 3 · Gentle breeze · gusts 9 mph
Swell 0.7 ft SSW · 4 s period
Humidity 74% Dew point 73°
Visibility 24 km Cloud cover 0%

Next 24 hours

temperature · wind · rain · humidity
12:00 AM Overcast 82° 8 SSE 0% 0.0 77%
2:00 AM Overcast 82° 8 SSE 21% 0.0 76%
4:00 AM Light drizzle 82° 6 S 71% 0.4 78%
6:00 AM Overcast 82° 5 SSE 84% 0.0 79%
8:00 AM Overcast 84° 2 S 81% 0.0 73%
10:00 AM Light drizzle 86° 3 E 71% 0.2 67%
12:00 PM Partly cloudy 86° 9 E 66% 0.0 68%
2:00 PM Thunderstorm 86° 5 ESE 66% 0.4 68%
4:00 PM Clear sky 88° 7 S 68% 0.0 62%
6:00 PM Clear sky 86° 10 SSW 53% 0.0 68%
8:00 PM Clear sky 84° 8 S 29% 0.0 74%
10:00 PM Clear sky 82° 7 S 3% 0.0 75%
11:00 PM Clear sky 82° 7 SSE 0% 0.0 74%

Rain chance and millimetres per hour, then relative humidity. Scroll for the rest of the day.

Fishing barometer

29.91 inHg → Stable
  • Rising Very good Rising pressure after a low signals settling weather — fish feed confidently and this is often the best barometer window of all.
  • Stable Normal activity — today A steady barometer for a day or more means settled conditions and predictable, average feeding around tides and solunar peaks.
  • Falling Good at first A dropping barometer sparks a burst of feeding before the weather turns, then activity slows markedly as the front arrives.
min 29.88 inHg max 30.00 inHg Hover, tap or arrow-key the line to read any hour.

The barometer is holding steady. Expect routine feeding behaviour, with the usual peaks around tide changes and the solunar periods rather than any pressure-driven surge.

UV index

solar protection

UV 8

High

High exposure — protection is essential: hat, sunglasses and SPF 30+, and take shade around midday.

1–2 · Low
Little risk — most people need no sun protection.
3–7 · Moderate to high
Wear a hat, sunglasses and SPF 30+, and take shade around midday.
8+ · Very high to extreme
Use SPF 50+, cover up and stay out of the sun through the middle of the day.
Water temperature 88° Ranges 87° to 88° today
88°
0 h
86°
2 h
86°
4 h
86°
6 h
86°
8 h
88°
10 h
88°
12 h
88°
14 h
88°
16 h
88°
18 h
88°
20 h
88°
22 h
88°
24 h

The sea surface holds around 30.7° today, moving between 30.4° and 31.0°. Water temperature sets the pace of fish metabolism, so even a small shift can change where fish hold and how actively they feed.

Outlook

Next 7 days
  • Thu 3 Partly cloudy 87°/82° 10 mph
  • Fri 4 Light drizzle 84°/78° 9 mph
  • Sat 5 Light drizzle 87°/78° 7 mph
  • Sun 6 Mainly clear 87°/80° 11 mph
  • Mon 7 Light drizzle 89°/79° 12 mph
  • Tue 8 Mainly clear 88°/79° 11 mph
  • Wed 9 Clear sky 88°/82° 9 mph

Air quality

Fair · EAQI 34

Air quality is fair. Fine for outdoor activity; unusually sensitive people should watch for symptoms.

O₃ Ozone Fair 71.6µg/m³ Forms in sunlight; can irritate airways at high levels. Bar is scaled to 130 µg/m³, where the "poor" band starts.
PM10 Good 5.6µg/m³ Coarse particles from dust, sea spray and traffic. Bar is scaled to 50 µg/m³, where the "poor" band starts.
PM2.5 Good 3.8µg/m³ Fine particles that reach deep into the lungs. Bar is scaled to 25 µg/m³, where the "poor" band starts.

Bands follow the European Air Quality Index; the day's index is its worst hour, each pollutant its daily mean. Air quality from CAMS.

Weather & marine data by Open-Meteo.com (CC BY 4.0) · times are Southwest Pass, Vermilion Bay local time.

Tidal coefficient · September

Bigger coefficients mean larger tides and stronger currents
Thursday 3 September 39 Low

Morning 47 · afternoon 39

Month range 20 – 104

Heights this month span -1.0 ft to 1.0 ft above the chart datum

Biggest tides: 9–12 Sep (coef 104) · Quietest stretch: 18–19 Sep (coef 20)

September 2026 — hover, tap or arrow-key a bar to read that day

Very high High Average Low

A larger coefficient means a wider gap between high and low water, so the strongest currents run along the sea bed. Tidal range also shifts with the weather — check the wind and swell before you head out.

Swell

From SSW (213°) · 3.8 s period
Most frequent waves 0.3 ft About half the significant height — what you will see most of the time.
Significant height 0.7 ft The standard forecast figure — roughly 1 wave in 7 runs higher, on a 3.8 second period.
Maximum waves 1.3 ft The odd crest reaches this — allow for it before heading into exposed water.
Swell height 0 – 1.6 ft scale 00:00 · 06:00 · 12:00 · 18:00 · 24:00
0 h 1.0 ft 3 s SSW
2 h 1.0 ft 3 s SSW
4 h 1.0 ft 3 s SSW
6 h 1.0 ft 3 s SSW
8 h 1.0 ft 4 s SSW
10 h 1.0 ft 4 s SSW
12 h 0.7 ft 4 s SSW
14 h 0.7 ft 4 s SSW
16 h 0.7 ft 4 s SSW
18 h 0.7 ft 4 s SW
20 h 0.7 ft 4 s SSW
22 h 0.7 ft 4 s SSW
24 h 0.7 ft 3 s SSW

These figures describe the swell out in open water. Closer to the beach the waves shift with the shape of the coastline and the seabed, though in most spots they end up broadly similar.

Solunar

Feeding windows from the moon's transit, rise and set — the free solunar rating for Southwest Pass, Vermilion Bay.

Best fishing times today

Slow

Solunar theory rates today a slow day for fishing at Southwest Pass, Vermilion Bay — plan around the major and minor periods below.

Major Peak activity

5:02 AM – 7:02 AM

Moon overhead (lunar transit)

Overlaps sunrise or sunset
Minor Average activity

12:51 PM – 1:51 PM

Moonset

Major Peak activity

5:32 PM – 7:32 PM

Moon underfoot (opposing transit)

Overlaps sunrise or sunset
Minor Average activity

11:09 PM – 12:09 AM

Moonrise

Major period Minor period Daylight

Major periods track the moon's transit and opposing transit and run about two hours; minor periods open at moonrise and moonset and last about an hour. When a period lands on sunrise or sunset, activity climbs higher still — and that overlap happens today.

Moon

Thursday 3 September
Last quarter 57% illuminated · 21.5 days old Moonrise 23:39 · Moonset 13:21 · transit 06:02 Visible for 13h 43m
rise 23:39 · 59° ENE set 13:21 · 300° WNW transit 06:02
04 SEP Last Quarter 2:51 AM tomorrow
10 SEP New Moon 10:26 PM in 7 days
18 SEP First Quarter 3:43 PM in 15 days
26 SEP Full Moon 11:49 AM in 23 days

Planner

When to go this week, and which days of September are worth the drive.

Bite windows

Thursday 3 September

Fish feed hardest when the water starts moving — plan around the hour before and after each tide turn, and doubly so where a turn meets a solunar major period.

Low tide turn

01:00 – 03:00

Water bottoms out at 02:00 then starts to rise.

Prime window

05:10 – 07:10

Tide turn overlaps a major solunar period — the best bite of the day.

Low tide turn

12:40 – 14:40

Water bottoms out at 13:40 then starts to rise.

High tide turn

20:30 – 22:30

Water peaks at 21:30 then starts to fall.

Best days in September

Ranked by tidal coefficient — pick a day to load it.

Quietest stretch: 18–19 Sep (coef 20)

Astronomical observation · moon, sun and Earth

today, 3 September 2026
Moon Distance Earth–Moon 371,458km Angular diameter 0° 32′
Sun Distance Earth–Sun 150,886,788km Angular diameter 0° 32′

Daylight & twilight

Station local time
Golden hour, blue hour and twilight times at Southwest Pass, Vermilion Bay today, morning and evening.
LightMorningEvening
Golden hourSoft, warm light — the photographer's window 6:31 AM – 7:18 AM 6:56 PM – 7:42 PM
Blue hourDeep even blue just past the sun 6:22 AM – 6:31 AM 7:42 PM – 7:51 PM
Civil twilightBright enough to work without lights 6:22 AM – 6:46 AM 7:27 PM – 7:51 PM
Nautical twilightHorizon still visible at sea 5:53 AM – 6:22 AM 7:51 PM – 8:20 PM
Astronomical twilightThe last trace of sunlight 5:24 AM – 5:53 AM 8:20 PM – 8:49 PM

Lighting the Earth at this moment

8:41 PM UTC−5 · 3 September 2026 · equirectangular, 180°W → 180°E
Day and night world map showing where Southwest Pass, Vermilion Bay sits right now

The bright band marks where the Sun stands overhead right now; the pin is Southwest Pass, Vermilion Bay. As the Earth turns, the day-and-night line sweeps westward and this map refreshes with the local clock.

Tide table

September 2026
Tide times, heights, coefficient and fishing activity for every day of September 2026 at Southwest Pass, Vermilion Bay.
Day Moon Sun 1st tide 2nd tide 3rd tide 4th tide Coefficient Activity
1 Tue 78% illuminated · waning Sunrise6:45 AM Sunset7:30 PM 12:10 AM -0.3 ft low tide 4:50 AM 0.3 ft high tide 11:30 AM -0.7 ft low tide 6:40 PM 0.7 ft high tide 70 · High Fair
2 Wed 68% illuminated · waning Sunrise6:46 AM Sunset7:28 PM 1:00 AM 0.0 ft low tide 5:30 AM 0.3 ft high tide 12:30 PM -1.0 ft low tide 8:00 PM 0.7 ft high tide 55 · Average Fair
3 Thu 57% illuminated · waning Sunrise6:46 AM Sunset7:27 PM 2:00 AM 0.0 ft low tide 6:10 AM 0.3 ft high tide 1:40 PM -1.0 ft low tide 9:30 PM 0.7 ft high tide 39 · Low Slow
4 Fri 46% illuminated · waning Sunrise6:47 AM Sunset7:26 PM 3:20 AM 0.0 ft low tide 7:10 AM 0.3 ft high tide 2:50 PM -1.0 ft low tide 11:00 PM 0.7 ft high tide 35 · Low Slow
5 Sat 34% illuminated · waning Sunrise6:47 AM Sunset7:25 PM 4:40 AM 0.3 ft low tide 8:10 AM 0.3 ft high tide 4:20 PM -1.0 ft low tide 49 · Low Fair
6 Sun 24% illuminated · waning Sunrise6:48 AM Sunset7:24 PM 12:20 AM 0.7 ft high tide 5:50 AM 0.0 ft low tide 9:40 AM 0.3 ft high tide 5:40 PM -1.0 ft low tide 64 · Average Slow
7 Mon 15% illuminated · waning Sunrise6:48 AM Sunset7:22 PM 1:20 AM 0.7 ft high tide 6:30 AM 0.0 ft low tide 11:10 AM 0.7 ft high tide 6:50 PM -1.0 ft low tide 79 · High Fair
8 Tue 8% illuminated · waning Sunrise6:49 AM Sunset7:21 PM 2:00 AM 0.7 ft high tide 7:10 AM 0.0 ft low tide 12:30 PM 0.7 ft high tide 7:50 PM -1.0 ft low tide 92 · Very high Excellent
9 Wed 3% illuminated · waning Sunrise6:49 AM Sunset7:20 PM 2:40 AM 0.3 ft high tide 7:50 AM -0.3 ft low tide 1:40 PM 0.7 ft high tide 8:50 PM -1.0 ft low tide 100 · Very high Excellent
10 Thu 0% illuminated · waning Sunrise6:50 AM Sunset7:19 PM 3:20 AM 0.3 ft high tide 8:20 AM -0.3 ft low tide 2:40 PM 1.0 ft high tide 9:40 PM -0.7 ft low tide 104 · Very high Excellent
11 Fri 0% illuminated · waxing Sunrise6:50 AM Sunset7:18 PM 3:40 AM 0.3 ft high tide 9:00 AM -0.3 ft low tide 3:40 PM 1.0 ft high tide 10:40 PM -0.7 ft low tide 102 · Very high Excellent
12 Sat 3% illuminated · waxing Sunrise6:51 AM Sunset7:16 PM 4:00 AM 0.0 ft high tide 9:30 AM -0.7 ft low tide 4:30 PM 1.0 ft high tide 11:30 PM -0.3 ft low tide 96 · Very high Excellent
13 Sun 8% illuminated · waxing Sunrise6:51 AM Sunset7:15 PM 4:10 AM 0.0 ft high tide 10:10 AM -0.7 ft low tide 5:30 PM 1.0 ft high tide 85 · High Excellent
14 Mon 14% illuminated · waxing Sunrise6:52 AM Sunset7:14 PM 12:20 AM -0.3 ft low tide 4:20 AM 0.0 ft high tide 10:50 AM -0.7 ft low tide 6:30 PM 0.7 ft high tide 72 · High Fair
15 Tue 22% illuminated · waxing Sunrise6:52 AM Sunset7:13 PM 1:20 AM 0.0 ft low tide 4:30 AM 0.0 ft high tide 11:30 AM -0.7 ft low tide 7:30 PM 0.7 ft high tide 58 · Average Fair
16 Wed 30% illuminated · waxing Sunrise6:53 AM Sunset7:11 PM 2:30 AM 0.0 ft low tide 5:00 AM 0.0 ft high tide 12:20 PM -0.7 ft low tide 8:40 PM 0.7 ft high tide 43 · Low Fair
17 Thu 39% illuminated · waxing Sunrise6:53 AM Sunset7:10 PM 3:50 AM 0.0 ft low tide 5:30 AM 0.0 ft high tide 1:40 PM -0.7 ft low tide 10:00 PM 0.3 ft high tide 29 · Low Fair
18 Fri 49% illuminated · waxing Sunrise6:54 AM Sunset7:09 PM 5:00 AM 0.0 ft low tide 6:30 AM 0.0 ft high tide 3:10 PM -0.7 ft low tide 11:20 PM 0.3 ft high tide 20 · Low Slow
19 Sat 58% illuminated · waxing Sunrise6:55 AM Sunset7:08 PM 5:40 AM 0.0 ft low tide 8:10 AM 0.0 ft high tide 4:40 PM -0.7 ft low tide 25 · Low Slow
20 Sun 67% illuminated · waxing Sunrise6:55 AM Sunset7:06 PM 12:20 AM 0.3 ft high tide 6:10 AM 0.0 ft low tide 10:20 AM 0.3 ft high tide 5:50 PM -0.7 ft low tide 39 · Low Fair
21 Mon 76% illuminated · waxing Sunrise6:56 AM Sunset7:05 PM 1:10 AM 0.3 ft high tide 6:30 AM 0.0 ft low tide 11:40 AM 0.3 ft high tide 6:50 PM -0.7 ft low tide 53 · Average Slow
22 Tue 84% illuminated · waxing Sunrise6:56 AM Sunset7:04 PM 1:40 AM 0.3 ft high tide 6:50 AM 0.0 ft low tide 12:30 PM 0.3 ft high tide 7:40 PM -0.7 ft low tide 67 · Average Fair
23 Wed 90% illuminated · waxing Sunrise6:57 AM Sunset7:03 PM 2:10 AM 0.3 ft high tide 7:00 AM -0.3 ft low tide 1:10 PM 0.7 ft high tide 8:10 PM -0.7 ft low tide 80 · High Good
24 Thu 96% illuminated · waxing Sunrise6:57 AM Sunset7:02 PM 2:30 AM 0.3 ft high tide 7:20 AM -0.3 ft low tide 1:50 PM 0.7 ft high tide 8:50 PM -0.7 ft low tide 91 · Very high Excellent
25 Fri 99% illuminated · waxing Sunrise6:58 AM Sunset7:00 PM 2:30 AM 0.0 ft high tide 7:40 AM -0.3 ft low tide 2:30 PM 1.0 ft high tide 9:20 PM -0.3 ft low tide 99 · Very high Excellent
26 Sat 100% illuminated · waning Sunrise6:58 AM Sunset6:59 PM 2:30 AM 0.0 ft high tide 8:10 AM -0.7 ft low tide 3:00 PM 1.0 ft high tide 9:50 PM -0.3 ft low tide 102 · Very high Excellent
27 Sun 99% illuminated · waning Sunrise6:59 AM Sunset6:58 PM 2:40 AM 0.3 ft high tide 8:50 AM -0.7 ft low tide 3:50 PM 1.0 ft high tide 10:30 PM -0.3 ft low tide 101 · Very high Excellent
28 Mon 95% illuminated · waning Sunrise6:59 AM Sunset6:57 PM 3:00 AM 0.3 ft high tide 9:30 AM -1.0 ft low tide 4:40 PM 1.0 ft high tide 11:00 PM -0.3 ft low tide 94 · Very high Excellent
29 Tue 89% illuminated · waning Sunrise7:00 AM Sunset6:55 PM 3:30 AM 0.3 ft high tide 10:20 AM -1.0 ft low tide 5:30 PM 1.0 ft high tide 11:40 PM 0.0 ft low tide 84 · High Fair
30 Wed 81% illuminated · waning Sunrise7:00 AM Sunset6:54 PM 4:10 AM 0.3 ft high tide 11:10 AM -1.0 ft low tide 6:40 PM 0.7 ft high tide 70 · High Fair

Biggest tides: 9–12 Sep (coef 104) · Quietest stretch: 18–19 Sep (coef 20) · Morning 47 · afternoon 39. Predicted levels run between -1.0 ft and 1.0 ft this month.

Heights are metres above the station's chart datum, so the biggest tides can dip just below zero. Every time shown is Southwest Pass, Vermilion Bay local time, with daylight saving already applied.

Nearby

Other tide stations close to Southwest Pass, Vermilion Bay, ranked by distance.

Fishing sites near Southwest Pass, Vermilion Bay

this station in gold · nearby stations in green

Map data © OpenStreetMap contributors.

All Louisiana locations

Mandeville Eden Isle Grand Isle Barataria Pass Bastian Island Bay Gardene Bay Pomme D'or Bayou BonFouca, Route 433 Bayou Chene Bayou Faleau Bayou Fearman, Vermillion Bay Bayou Rigaud, Grand Isle Breton Islands Caillou Boca Calcasieu Pass Calcasieu Ship Channel, Bulk Terminal Caminada Pass (bridge) Catfish Point, Mermentau River Chef Menteur, Chef Menteur Pass Cocodrie, Terrebonne Bay Cote Blanche Island, West Cote Blanche Bay Cypremort Point Devon Energy Facility E. ISLE DERNIERES, LAKE PELTO East Bank 1, Norco, B. LaBranche East Calcasieu Lake EAST POINT, GRAND ISLE East Timbalier Island, Timbalier Bay Empire Jetty Eugene Island

Frequently asked questions

Tides, coefficients and fishing times for Southwest Pass, Vermilion Bay, explained.

What time is high tide in Southwest Pass, Vermilion Bay today?

High water at Southwest Pass, Vermilion Bay today is at 06:10 and 21:30. The full list of high and low tide times is in the table above and refreshes every day.

Is today a good day to fish in Southwest Pass, Vermilion Bay?

Based on solunar theory the fishing rating today is Slow. The strongest windows are the major periods around the lunar transit, which often line up with sunrise and sunset.

What is the tidal coefficient and why does it matter?

The coefficient runs from 0 to 120 and measures the tidal range — today it is 39 (Low). Higher numbers mean stronger currents and a bigger gap between high and low water, which matters for fishing, diving and boating.

When are sunrise and sunset in Southwest Pass, Vermilion Bay today?

The sun rises at 06:46 and sets at 19:27 local time, giving 12h 41m of daylight.

What is the water temperature in Southwest Pass, Vermilion Bay today?

The sea surface at Southwest Pass, Vermilion Bay is around 30.9°C right now. Water temperature sets the pace of fish metabolism, so the hourly strip above is worth a glance — even a small shift can change where fish hold and how actively they feed.

How big are the waves in Southwest Pass, Vermilion Bay today?

The significant wave height at Southwest Pass, Vermilion Bay is currently 0.2 m with a period of 3.8 s between crests. Individual sets can stack up to roughly twice that height, so allow a margin at exposed marks and anchorages.

Data: Open-Meteo (CC BY 4.0) · CAMS · OpenStreetMap · GeoNames (CC BY 4.0) · FES2022 — CNES/AVISO/LEGOS · IP geolocation by DB-IP (CC BY 4.0)

Estimates for planning only — not for navigation or safety-critical use. · www.thetidechart.com/us/louisiana/southwest-pass-vermilion-bay