Bats in Michigan in August
Yes, August is one of the best months to see bats in Michigan. It is the 1st busiest month of the year, with 149 of the 683 sightings logged across the year (21.8%), 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 June 28, 2026.
Peak month for bats in Michigan
21.8%
of yearly sightings
149
records in August
#1
busiest month of 12
683
verified records a year
July 16.7%, August 21.8%, September 12.2%. Busiest month is August at 21.8%.
683 verified observations of bats in Michigan, recorded across 12 months of the year on iNaturalist.
When bats are recorded in Michigan
Peak month
August
149 records (21.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 8 | 1.2% |
| February | 12 | 1.8% |
| March | 21 | 3.1% |
| April | 64 | 9.4% |
| Maypeak | 85 | 12.4% |
| June | 82 | 12% |
| Julypeak | 114 | 16.7% |
| Augustpeak | 149 | 21.8% |
| September | 83 | 12.2% |
| October | 22 | 3.2% |
| November | 27 | 4% |
| December | 16 | 2.3% |
Bats you are most likely to see
| Species | Verified observations |
|---|---|
| Big Brown Bat | 299 |
| Little Brown Bat | 57 |
| Silver-haired Bat | 45 |
| Eastern Red Bat | 41 |
| Northern Hoary Bat | 21 |
| Northern Myotis | 8 |
| Tri-coloured Bat | 3 |
| Evening Bat | 1 |
In Michigan, August carries 21.8% of the year's bats sightings, about 13.5 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 (16.7%) into August, and it heads toward September (12.2%) 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 Michigan are Big Brown Bat, Little Brown Bat and Silver-haired 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 Bat299 records
- Little Brown Bat57 records
- Silver-haired Bat45 records
- Eastern Red Bat41 records
- Northern Hoary Bat21 records
- Northern Myotis8 records
Plan your bat trip in Michigan
Start with live tours near Isle Royale 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 Michigan in August?+
Yes. August accounts for 149 of the 683 verified bats sightings logged in Michigan across the year, which is 21.8% of the annual total.
Is August a good time to see bats in Michigan?+
August is one of the best months. It ranks 1st of the year and sits inside the peak window of August, July and May.
What month is best for bats in Michigan?+
August is the single busiest month, with the broader peak running through August, July and May, based on 683 verified observations.
Which bats are you most likely to see in Michigan?+
The most-recorded species in Michigan are Big Brown Bat, Little Brown Bat and Silver-haired Bat, based on all-time iNaturalist counts.
See bats in Michigan in other months
More places to see bats
More wildlife in Michigan