Bees in Colorado in September
Yes, September is a good month to see bees in Colorado. It is the 5th busiest month of the year, with 4,951 of the 52,296 sightings logged across the year (9.5%), 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.
Good month for bees in Colorado
9.5%
of yearly sightings
4,951
records in September
#5
busiest month of 12
52,296
verified records a year
August 20.8%, September 9.5%, October 2.3%. Busiest month is July at 26.3%.
52,296 verified observations of bees in Colorado, recorded across 12 months of the year on iNaturalist.
When bees are recorded in Colorado
Peak month
July
13,743 records (26.3% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 31 | 0.1% |
| February | 59 | 0.1% |
| March | 344 | 0.7% |
| April | 2,335 | 4.5% |
| May | 6,864 | 13.1% |
| Junepeak | 11,783 | 22.5% |
| Julypeak | 13,743 | 26.3% |
| Augustpeak | 10,871 | 20.8% |
| September | 4,951 | 9.5% |
| October | 1,217 | 2.3% |
| November | 72 | 0.1% |
| December | 26 | 0% |
Bees you are most likely to see
| Species | Verified observations |
|---|---|
| Western Honey Bee | 6,605 |
| Hunt's Bumble Bee | 4,312 |
| Brown-belted Bumble Bee | 1,937 |
| Nevada Bumble Bee | 1,739 |
| Golden Northern Bumble Bee | 1,544 |
| American Bumble Bee | 1,476 |
| Colorado Black-notched Bumble Bee | 1,206 |
| Ligated Furrow Bee | 830 |
In Colorado, September carries 9.5% of the year's bees sightings, about 1.2 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 (20.8%) into September, and it heads toward October (2.3%) after. The busiest month is July (26.3%), so if timing is flexible, that window is the safer bet.
The bees most often recorded in Colorado are Western Honey Bee, Hunt's Bumble Bee and Brown-belted Bumble Bee. 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 bees you are most likely to see
- Western Honey Bee6,605 records
- Hunt's Bumble Bee4,312 records
- Brown-belted Bumble Bee1,937 records
- Nevada Bumble Bee1,739 records
- Golden Northern Bumble Bee1,544 records
- American Bumble Bee1,476 records
Plan your bee trip in Colorado
Start with live tours near Bent's Old Fort National Historic Site, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Bent's Old Fort National Historic Site
Use the live GetYourGuide widget to compare local departures and activity styles close to the main bee viewing area.
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Stay nearbyStay near Bent's Old Fort National Historic Site
Compare hotels, cabins and lodges close to the best bee viewing area in Colorado.
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Broader backupBook a bee tour in Colorado
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
Can you see bees in Colorado in September?+
Yes. September accounts for 4,951 of the 52,296 verified bees sightings logged in Colorado across the year, which is 9.5% of the annual total.
Is September a good time to see bees in Colorado?+
September is the 5th busiest month. It is workable, though July and June is the stronger window for a reliable sighting.
What month is best for bees in Colorado?+
July is the single busiest month, with the broader peak running through July, June and August, based on 52,296 verified observations.
Which bees are you most likely to see in Colorado?+
The most-recorded species in Colorado are Western Honey Bee, Hunt's Bumble Bee and Brown-belted Bumble Bee, based on all-time iNaturalist counts.
See bees in Colorado in other months
More wildlife in Colorado