Tree Frogs in Oregon in September
Yes, September is a good month to see tree frogs in Oregon. It is the 6th busiest month of the year, with 885 of the 9,022 sightings logged across the year (9.8%), 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.
Good month for tree frogs in Oregon
9.8%
of yearly sightings
885
records in September
#6
busiest month of 12
9,022
verified records a year
August 13.2%, September 9.8%, October 7%. Busiest month is April at 13.4%.
9,022 verified observations of tree frogs in Oregon, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Oregon
Peak month
April
1,211 records (13.4% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 267 | 3% |
| February | 401 | 4.4% |
| March | 798 | 8.8% |
| Aprilpeak | 1,211 | 13.4% |
| Maypeak | 1,209 | 13.4% |
| June | 1,058 | 11.7% |
| July | 991 | 11% |
| Augustpeak | 1,191 | 13.2% |
| September | 885 | 9.8% |
| October | 634 | 7% |
| November | 261 | 2.9% |
| December | 116 | 1.3% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Pacific chorus frog | 8,991 |
| Cuban Tree Frog | 1 |
In Oregon, September carries 9.8% of the year's tree frogs sightings, about 1.5 points above an even month-to-month split. That makes it the 6th busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from August (13.2%) into September, and it heads toward October (7%) after. The busiest month is April (13.4%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Oregon are Pacific chorus frog and Cuban Tree Frog. 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 tree frogs you are most likely to see
- Pacific chorus frog8,991 records
- Cuban Tree Frog1 records
Plan your tree frog trip in Oregon
Start with live tours near Crater Lake 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 Crater Lake National Park
Use the live GetYourGuide widget to compare local departures and activity styles close to the main tree frog viewing area.
Booking.com
Stay nearbyStay near Crater Lake National Park
Compare hotels, cabins and lodges close to the best tree frog viewing area in Oregon.
Viator
Broader backupBook a tree frog tour in Oregon
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 tree frogs in Oregon in September?+
Yes. September accounts for 885 of the 9,022 verified tree frogs sightings logged in Oregon across the year, which is 9.8% of the annual total.
Is September a good time to see tree frogs in Oregon?+
September is the 6th busiest month. It is workable, though April and May is the stronger window for a reliable sighting.
What month is best for tree frogs in Oregon?+
April is the single busiest month, with the broader peak running through April, May and August, based on 9,022 verified observations.
Which tree frogs are you most likely to see in Oregon?+
The most-recorded species in Oregon are Pacific chorus frog and Cuban Tree Frog, based on all-time iNaturalist counts.
See tree frogs in Oregon in other months
More places to see tree frogs
More wildlife in Oregon