Tree Frogs in Washington in September
Yes, September is a good month to see tree frogs in Washington. It is the 4th busiest month of the year, with 1,602 of the 13,399 sightings logged across the year (12%), 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 Washington
12%
of yearly sightings
1,602
records in September
#4
busiest month of 12
13,399
verified records a year
August 16.7%, September 12%, October 7.1%. Busiest month is August at 16.7%.
13,399 verified observations of tree frogs in Washington, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Washington
Peak month
August
2,238 records (16.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 152 | 1.1% |
| February | 361 | 2.7% |
| March | 1,517 | 11.3% |
| Aprilpeak | 2,052 | 15.3% |
| Maypeak | 1,608 | 12% |
| June | 1,317 | 9.8% |
| July | 1,236 | 9.2% |
| Augustpeak | 2,238 | 16.7% |
| September | 1,602 | 12% |
| October | 948 | 7.1% |
| November | 270 | 2% |
| December | 98 | 0.7% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Pacific chorus frog | 13,359 |
| Cuban Tree Frog | 1 |
In Washington, September carries 12% of the year's tree frogs sightings, about 3.7 points above an even month-to-month split. That makes it the 4th busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from August (16.7%) into September, and it heads toward October (7.1%) after. The busiest month is August (16.7%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Washington 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 frog13,359 records
- Cuban Tree Frog1 records
Plan your tree frog trip in Washington
Start with live tours near Ebey's Landing National Historical Reserve, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Ebey's Landing National Historical Reserve
Use the live GetYourGuide widget to compare local departures and activity styles close to the main tree frog viewing area.
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Stay nearbyStay near Ebey's Landing National Historical Reserve
Compare hotels, cabins and lodges close to the best tree frog viewing area in Washington.
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Broader backupBook a tree frog tour in Washington
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 Washington in September?+
Yes. September accounts for 1,602 of the 13,399 verified tree frogs sightings logged in Washington across the year, which is 12% of the annual total.
Is September a good time to see tree frogs in Washington?+
September is the 4th busiest month. It is workable, though August and April is the stronger window for a reliable sighting.
What month is best for tree frogs in Washington?+
August is the single busiest month, with the broader peak running through August, April and May, based on 13,399 verified observations.
Which tree frogs are you most likely to see in Washington?+
The most-recorded species in Washington are Pacific chorus frog and Cuban Tree Frog, based on all-time iNaturalist counts.
See tree frogs in Washington in other months
More places to see tree frogs
More wildlife in Washington