Bats in Minnesota in September
Yes, September is one of the best months to see bats in Minnesota. It is the 3rd busiest month of the year, with 80 of the 650 sightings logged across the year (12.3%), 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 Minnesota
12.3%
of yearly sightings
80
records in September
#3
busiest month of 12
650
verified records a year
August 18.6%, September 12.3%, October 7.1%. Busiest month is July at 22.8%.
650 verified observations of bats in Minnesota, recorded across 12 months of the year on iNaturalist.
When bats are recorded in Minnesota
Peak month
July
148 records (22.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 6 | 0.9% |
| February | 6 | 0.9% |
| March | 17 | 2.6% |
| April | 62 | 9.5% |
| May | 73 | 11.2% |
| June | 60 | 9.2% |
| Julypeak | 148 | 22.8% |
| Augustpeak | 121 | 18.6% |
| Septemberpeak | 80 | 12.3% |
| October | 46 | 7.1% |
| November | 16 | 2.5% |
| December | 15 | 2.3% |
Bats you are most likely to see
| Species | Verified observations |
|---|---|
| Big Brown Bat | 258 |
| Little Brown Bat | 71 |
| Silver-haired Bat | 63 |
| Eastern Red Bat | 34 |
| Northern Hoary Bat | 18 |
| Tri-coloured Bat | 13 |
| Northern Myotis | 2 |
| Evening Bat | 1 |
In Minnesota, September carries 12.3% of the year's bats sightings, about 4 points above an even month-to-month split. That makes it the 3rd busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from August (18.6%) into September, and it heads toward October (7.1%) after. This is right inside the peak window, so September is one of the surest months to plan a trip around.
The bats most often recorded in Minnesota are Big Brown Bat, Little Brown Bat and Silver-haired 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 Bat258 records
- Little Brown Bat71 records
- Silver-haired Bat63 records
- Eastern Red Bat34 records
- Northern Hoary Bat18 records
- Tri-coloured Bat13 records
Plan your bat trip in Minnesota
Start with live tours near Grand Portage National Monument, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Grand Portage National Monument
Use the live GetYourGuide widget to compare local departures and activity styles close to the main bat viewing area.
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Stay nearbyStay near Grand Portage National Monument
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Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Gear to see them
Frequently asked questions
Can you see bats in Minnesota in September?+
Yes. September accounts for 80 of the 650 verified bats sightings logged in Minnesota across the year, which is 12.3% of the annual total.
Is September a good time to see bats in Minnesota?+
September is one of the best months. It ranks 3rd of the year and sits inside the peak window of July, August and September.
What month is best for bats in Minnesota?+
July is the single busiest month, with the broader peak running through July, August and September, based on 650 verified observations.
Which bats are you most likely to see in Minnesota?+
The most-recorded species in Minnesota are Big Brown Bat, Little Brown Bat and Silver-haired Bat, based on all-time iNaturalist counts.
See bats in Minnesota in other months
More places to see bats
More wildlife in Minnesota