Bats in Louisiana in September

Yes, September is a good month to see bats in Louisiana. It is the 4th busiest month of the year, with 36 of the 387 sightings logged across the year (9.3%), based on verified iNaturalist records.

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By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 2, 2026.

Mexican Free-tailed Bat photographed in LouisianaRafinesque's Big-eared Bat photographed in LouisianaEvening Bat photographed in Louisiana
Photos by iNaturalist observers, used under Creative Commons.

Good month for bats in Louisiana

9.3%

of yearly sightings

36

records in September

#4

busiest month of 12

387

verified records a year

August 5.7%, September 9.3%, October 3.6%. Busiest month is April at 25.6%.

Best months: April, June, March

387 verified observations of bats in Louisiana, recorded across 12 months of the year on iNaturalist.

When bats are recorded in Louisiana

Peak month

April

99 records (25.6% of the year)

Quietest month

December

7 records

MonthObservationsShare
January246.2%
February164.1%
Marchpeak369.3%
Aprilpeak9925.6%
May328.3%
Junepeak6617.1%
July184.7%
August225.7%
September369.3%
October143.6%
November174.4%
December71.8%

Bats you are most likely to see

SpeciesVerified observations
Evening Bat64
Mexican Free-tailed Bat49
Rafinesque's Big-eared Bat38
Eastern Red Bat31
Big Brown Bat26
Seminole Bat19
Tri-coloured Bat19
Southeastern Myotis13

In Louisiana, September carries 9.3% of the year's bats sightings, about 1 points above an even month-to-month split. That makes it the 4th busiest of the twelve months, out of 12 months with recorded activity.

Activity is rising from August (5.7%) into September, and it heads toward October (3.6%) after. The busiest month is April (25.6%), so if timing is flexible, that window is the safer bet.

The bats most often recorded in Louisiana are Evening Bat, Mexican Free-tailed Bat and Rafinesque's Big-eared Bat. 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 bats you are most likely to see

  • Evening Bat64 records
  • Mexican Free-tailed Bat49 records
  • Rafinesque's Big-eared Bat38 records
  • Eastern Red Bat31 records
  • Big Brown Bat26 records
  • Seminole Bat19 records
Plan your tripJean Lafitte National Historical Park and Preserve

Plan your bat 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.

Gear to see them

Frequently asked questions

Can you see bats in Louisiana in September?+

Yes. September accounts for 36 of the 387 verified bats sightings logged in Louisiana across the year, which is 9.3% of the annual total.

Is September a good time to see bats in Louisiana?+

September is the 4th busiest month. It is workable, though April and June is the stronger window for a reliable sighting.

What month is best for bats in Louisiana?+

April is the single busiest month, with the broader peak running through April, June and March, based on 387 verified observations.

Which bats are you most likely to see in Louisiana?+

The most-recorded species in Louisiana are Evening Bat, Mexican Free-tailed Bat and Rafinesque's Big-eared Bat, based on all-time iNaturalist counts.