Tree Frogs in Delaware in September
Yes, September is a good month to see tree frogs in Delaware. It is the 4th busiest month of the year, with 205 of the 1,615 sightings logged across the year (12.7%), 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 Delaware
12.7%
of yearly sightings
205
records in September
#4
busiest month of 12
1,615
verified records a year
August 12.5%, September 12.7%, October 6.3%. Busiest month is June at 18.3%.
1,615 verified observations of tree frogs in Delaware, recorded across 12 months of the year on iNaturalist.
When tree frogs are recorded in Delaware
Peak month
June
296 records (18.3% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 4 | 0.2% |
| February | 8 | 0.5% |
| March | 162 | 10% |
| April | 118 | 7.3% |
| Maypeak | 233 | 14.4% |
| Junepeak | 296 | 18.3% |
| Julypeak | 263 | 16.3% |
| August | 202 | 12.5% |
| September | 205 | 12.7% |
| October | 102 | 6.3% |
| November | 18 | 1.1% |
| December | 4 | 0.2% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Cope's Gray Tree Frog | 308 |
| Green Treefrog | 241 |
| Northern Cricket Frog | 239 |
| Spring Peeper | 201 |
| New Jersey Chorus Frog | 35 |
| Gray Treefrog | 30 |
| Barking Tree Frog | 20 |
| Squirrel Tree Frog | 4 |
In Delaware, September carries 12.7% of the year's tree frogs sightings, about 4.4 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 holds steady between August and September, and it heads toward October (6.3%) after. The busiest month is June (18.3%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Delaware are Cope's Gray Tree Frog, Green Treefrog and Northern Cricket 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
- Cope's Gray Tree Frog308 records
- Green Treefrog241 records
- Northern Cricket Frog239 records
- Spring Peeper201 records
- New Jersey Chorus Frog35 records
- Gray Treefrog30 records
Plan your tree frog trip in Delaware
Start with live tours near Captain John Smith Chesapeake National Historic Trail, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
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Live tours nearbySee live tours near Captain John Smith Chesapeake National Historic Trail
Use the live GetYourGuide widget to compare local departures and activity styles close to the main tree frog viewing area.
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Frequently asked questions
Can you see tree frogs in Delaware in September?+
Yes. September accounts for 205 of the 1,615 verified tree frogs sightings logged in Delaware across the year, which is 12.7% of the annual total.
Is September a good time to see tree frogs in Delaware?+
September is the 4th busiest month. It is workable, though June and July is the stronger window for a reliable sighting.
What month is best for tree frogs in Delaware?+
June is the single busiest month, with the broader peak running through June, July and May, based on 1,615 verified observations.
Which tree frogs are you most likely to see in Delaware?+
The most-recorded species in Delaware are Cope's Gray Tree Frog, Green Treefrog and Northern Cricket Frog, based on all-time iNaturalist counts.
See tree frogs in Delaware in other months
More places to see tree frogs
More wildlife in Delaware