Jellyfishes in Louisiana in September
Yes, September is one of the best months to see jellyfishes in Louisiana. It is the 2nd busiest month of the year, with 10 of the 69 sightings logged across the year (14.5%), based on verified iNaturalist records.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 2, 2026.
Peak month for jellyfishes in Louisiana
14.5%
of yearly sightings
10
records in September
#2
busiest month of 12
69
verified records a year
August 5.8%, September 14.5%, October 42%. Busiest month is October at 42%.
69 verified observations of jellyfishes in Louisiana, recorded across 12 months of the year on iNaturalist.
When jellyfishes are recorded in Louisiana
Peak month
October
29 records (42% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 3 | 4.3% |
| February | 2 | 2.9% |
| March | 3 | 4.3% |
| April | 4 | 5.8% |
| May | 1 | 1.4% |
| June | 1 | 1.4% |
| July | 2 | 2.9% |
| August | 4 | 5.8% |
| Septemberpeak | 10 | 14.5% |
| Octoberpeak | 29 | 42% |
| Novemberpeak | 8 | 11.6% |
| December | 2 | 2.9% |
Jellyfishes you are most likely to see
| Species | Verified observations |
|---|---|
| Southern Moon Jelly | 16 |
| Bay Nettle | 14 |
| Mushroom Jelly | 6 |
| Cannonball Jelly | 5 |
| Pink Meanie | 2 |
In Louisiana, September carries 14.5% of the year's jellyfishes sightings, about 6.2 points above an even month-to-month split. That makes it the 2nd busiest of the twelve months, out of 12 months with recorded activity.
Activity is rising from August (5.8%) into September, and it heads toward October (42%) after. This is right inside the peak window, so September is one of the surest months to plan a trip around.
The jellyfishes most often recorded in Louisiana are Southern Moon Jelly, Bay Nettle and Mushroom Jelly. Those counts are annual totals rather than a September split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in September itself.
Which jellyfishes you are most likely to see
- Southern Moon Jelly16 records
- Bay Nettle14 records
- Mushroom Jelly6 records
- Cannonball Jelly5 records
- Pink Meanie2 records
Plan your jellyfish trip in Louisiana
Start with live tours near Jean Lafitte National Historical Park and Preserve, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Jean Lafitte National Historical Park and Preserve
Use the live GetYourGuide widget to compare local departures and activity styles close to the main jellyfish viewing area.
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Stay nearbyStay near Jean Lafitte National Historical Park and Preserve
Compare hotels, cabins and lodges close to the best jellyfish viewing area in Louisiana.
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Broader backupBook a jellyfish tour in Louisiana
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
Can you see jellyfishes in Louisiana in September?+
Yes. September accounts for 10 of the 69 verified jellyfishes sightings logged in Louisiana across the year, which is 14.5% of the annual total.
Is September a good time to see jellyfishes in Louisiana?+
September is one of the best months. It ranks 2nd of the year and sits inside the peak window of October, September and November.
What month is best for jellyfishes in Louisiana?+
October is the single busiest month, with the broader peak running through October, September and November, based on 69 verified observations.
Which jellyfishes are you most likely to see in Louisiana?+
The most-recorded species in Louisiana are Southern Moon Jelly, Bay Nettle and Mushroom Jelly, based on all-time iNaturalist counts.
See jellyfishes in Louisiana in other months
More places to see jellyfishes
More wildlife in Louisiana