Bats in Indiana in August
Yes, August is one of the best months to see bats in Indiana. It is the 1st busiest month of the year, with 93 of the 576 sightings logged across the year (16.1%), 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 bats in Indiana
16.1%
of yearly sightings
93
records in August
#1
busiest month of 12
576
verified records a year
July 11.3%, August 16.1%, September 9.4%. Busiest month is August at 16.1%.
576 verified observations of bats in Indiana, recorded across 12 months of the year on iNaturalist.
When bats are recorded in Indiana
Peak month
August
93 records (16.1% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 10 | 1.7% |
| February | 23 | 4% |
| March | 36 | 6.3% |
| Aprilpeak | 67 | 11.6% |
| May | 63 | 10.9% |
| Junepeak | 83 | 14.4% |
| July | 65 | 11.3% |
| Augustpeak | 93 | 16.1% |
| September | 54 | 9.4% |
| October | 40 | 6.9% |
| November | 24 | 4.2% |
| December | 18 | 3.1% |
Bats you are most likely to see
| Species | Verified observations |
|---|---|
| Big Brown Bat | 212 |
| Eastern Red Bat | 76 |
| Tri-coloured Bat | 38 |
| Silver-haired Bat | 33 |
| Evening Bat | 12 |
| Little Brown Bat | 11 |
| Indiana Bat | 6 |
| Northern Hoary Bat | 3 |
In Indiana, August carries 16.1% of the year's bats sightings, about 7.8 points above an even month-to-month split. That makes it the 1st busiest of the twelve months, out of 12 months with recorded activity.
Activity is rising from July (11.3%) into August, and it heads toward September (9.4%) after. This is right inside the peak window, so August is one of the surest months to plan a trip around.
The bats most often recorded in Indiana are Big Brown Bat, Eastern Red Bat and Tri-coloured Bat. Those counts are annual totals rather than a August split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in August itself.
Which bats you are most likely to see
- Big Brown Bat212 records
- Eastern Red Bat76 records
- Tri-coloured Bat38 records
- Silver-haired Bat33 records
- Evening Bat12 records
- Little Brown Bat11 records
Plan your bat trip in Indiana
Start with live tours near Indiana Dunes National Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
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Use the live GetYourGuide widget to compare local departures and activity styles close to the main bat viewing area.
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Gear to see them
Frequently asked questions
Can you see bats in Indiana in August?+
Yes. August accounts for 93 of the 576 verified bats sightings logged in Indiana across the year, which is 16.1% of the annual total.
Is August a good time to see bats in Indiana?+
August is one of the best months. It ranks 1st of the year and sits inside the peak window of August, June and April.
What month is best for bats in Indiana?+
August is the single busiest month, with the broader peak running through August, June and April, based on 576 verified observations.
Which bats are you most likely to see in Indiana?+
The most-recorded species in Indiana are Big Brown Bat, Eastern Red Bat and Tri-coloured Bat, based on all-time iNaturalist counts.
See bats in Indiana in other months
More places to see bats
More wildlife in Indiana