Bats in Kansas in September

Yes, September is a good month to see bats in Kansas. It is the 5th busiest month of the year, with 31 of the 306 sightings logged across the year (10.1%), 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 June 28, 2026.

Eastern Red Bat photographed in KansasCave Myotis photographed in KansasBig Brown Bat photographed in Kansas
Photos by iNaturalist observers, used under Creative Commons.

Good month for bats in Kansas

10.1%

of yearly sightings

31

records in September

#5

busiest month of 12

306

verified records a year

August 13.7%, September 10.1%, October 5.9%. Busiest month is June at 19.9%.

Best months: June, August, April

306 verified observations of bats in Kansas, recorded across 12 months of the year on iNaturalist.

When bats are recorded in Kansas

Peak month

June

61 records (19.9% of the year)

Quietest month

February

5 records

MonthObservationsShare
January62%
February51.6%
March299.5%
Aprilpeak3611.8%
May237.5%
Junepeak6119.9%
July3611.8%
Augustpeak4213.7%
September3110.1%
October185.9%
November103.3%
December92.9%

Bats you are most likely to see

SpeciesVerified observations
Big Brown Bat138
Eastern Red Bat56
Evening Bat10
Tri-coloured Bat8
Gray Bat7
Cave Myotis4
Northern Hoary Bat4
Silver-haired Bat2

In Kansas, September carries 10.1% of the year's bats sightings, about 1.8 points above an even month-to-month split. That makes it the 5th busiest of the twelve months, out of 12 months with recorded activity.

Activity is easing off from August (13.7%) into September, and it heads toward October (5.9%) after. The busiest month is June (19.9%), so if timing is flexible, that window is the safer bet.

The bats most often recorded in Kansas are Big Brown Bat, Eastern Red Bat and Evening 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

  • Big Brown Bat138 records
  • Eastern Red Bat56 records
  • Evening Bat10 records
  • Tri-coloured Bat8 records
  • Gray Bat7 records
  • Cave Myotis4 records
Plan your tripLewis & Clark National Historic Trail

Plan your bat trip in Kansas

Start with live tours near Lewis & Clark National Historic Trail, 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 Kansas in September?+

Yes. September accounts for 31 of the 306 verified bats sightings logged in Kansas across the year, which is 10.1% of the annual total.

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

September is the 5th busiest month. It is workable, though June and August is the stronger window for a reliable sighting.

What month is best for bats in Kansas?+

June is the single busiest month, with the broader peak running through June, August and April, based on 306 verified observations.

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

The most-recorded species in Kansas are Big Brown Bat, Eastern Red Bat and Evening Bat, based on all-time iNaturalist counts.