Bison in California in September
Yes, September is one of the best months to see bison in California. It is the 3rd busiest month of the year, with 65 of the 645 sightings logged across the year (10.1%), 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 June 28, 2026.
American Bison · Public domain CC0
American Bison · Aaron Kreisberg CC BY
Plains Bison · Public domain CC0
Peak month for bison in California
10.1%
of yearly sightings
65
records in September
#3
busiest month of 12
645
verified records a year
August 9%, September 10.1%, October 6.8%. Busiest month is April at 15.5%.
645 verified observations of bison in California, recorded across 12 months of the year on iNaturalist.
When bison are recorded in California
Peak month
April
100 records (15.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 29 | 4.5% |
| February | 42 | 6.5% |
| March | 64 | 9.9% |
| Aprilpeak | 100 | 15.5% |
| Maypeak | 68 | 10.5% |
| June | 57 | 8.8% |
| July | 60 | 9.3% |
| August | 58 | 9% |
| Septemberpeak | 65 | 10.1% |
| October | 44 | 6.8% |
| November | 35 | 5.4% |
| December | 23 | 3.6% |
Bison you are most likely to see
| Species | Verified observations |
|---|---|
| American Bison | 645 |
In California, September carries 10.1% of the year's bison sightings, about 1.8 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 rising from August (9%) into September, and it heads toward October (6.8%) after. This is right inside the peak window, so September is one of the surest months to plan a trip around.
The bison most often recorded in California are American Bison. 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 bison you are most likely to see
- American Bison645 records
Gear to see them
Frequently asked questions
Can you see bison in California in September?+
Yes. September accounts for 65 of the 645 verified bison sightings logged in California across the year, which is 10.1% of the annual total.
Is September a good time to see bison in California?+
September is one of the best months. It ranks 3rd of the year and sits inside the peak window of April, May and September.
What month is best for bison in California?+
April is the single busiest month, with the broader peak running through April, May and September, based on 645 verified observations.
Which bison are you most likely to see in California?+
The most-recorded species in California are American Bison, based on all-time iNaturalist counts.
See bison in California in other months
More places to see bison
More wildlife in California