Deer in South Dakota in September
Yes, September is a good month to see deer in South Dakota. It is the 5th busiest month of the year, with 159 of the 1,744 sightings logged across the year (9.1%), 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.
Good month for deer in South Dakota
9.1%
of yearly sightings
159
records in September
#5
busiest month of 12
1,744
verified records a year
August 10.8%, September 9.1%, October 6.6%. Busiest month is June at 20%.
1,744 verified observations of deer in South Dakota, recorded across 12 months of the year on iNaturalist.
When deer are recorded in South Dakota
Peak month
June
349 records (20% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 30 | 1.7% |
| February | 31 | 1.8% |
| March | 64 | 3.7% |
| April | 145 | 8.3% |
| Maypeak | 240 | 13.8% |
| Junepeak | 349 | 20% |
| Julypeak | 285 | 16.3% |
| August | 188 | 10.8% |
| September | 159 | 9.1% |
| October | 115 | 6.6% |
| November | 90 | 5.2% |
| December | 48 | 2.8% |
Deer you are most likely to see
| Species | Verified observations |
|---|---|
| White-tailed Deer | 928 |
| Mule Deer | 766 |
In South Dakota, September carries 9.1% of the year's deer sightings, about 0.8 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 (10.8%) into September, and it heads toward October (6.6%) after. The busiest month is June (20%), so if timing is flexible, that window is the safer bet.
The deer most often recorded in South Dakota are White-tailed Deer and Mule Deer. 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 deer you are most likely to see
- White-tailed Deer928 records
- Mule Deer766 records
Plan your deer trip in South Dakota
Start with live tours near Badlands National Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Badlands National Park
Use the live GetYourGuide widget to compare local departures and activity styles close to the main deer viewing area.
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Stay nearbyStay near Badlands National Park
Compare hotels, cabins and lodges close to the best deer viewing area in South Dakota.
Viator
Broader backupBook a deer tour in South Dakota
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 deer in South Dakota in September?+
Yes. September accounts for 159 of the 1,744 verified deer sightings logged in South Dakota across the year, which is 9.1% of the annual total.
Is September a good time to see deer in South Dakota?+
September is the 5th busiest month. It is workable, though June and July is the stronger window for a reliable sighting.
What month is best for deer in South Dakota?+
June is the single busiest month, with the broader peak running through June, July and May, based on 1,744 verified observations.
Which deer are you most likely to see in South Dakota?+
The most-recorded species in South Dakota are White-tailed Deer and Mule Deer, based on all-time iNaturalist counts.
See deer in South Dakota in other months
More places to see deer
More wildlife in South Dakota