Tree Frogs in Maine in September
Yes, September is a good month to see tree frogs in Maine. It is the 6th busiest month of the year, with 489 of the 4,199 sightings logged across the year (11.6%), 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 Maine
11.6%
of yearly sightings
489
records in September
#6
busiest month of 12
4,199
verified records a year
August 13.9%, September 11.6%, October 2.6%. Busiest month is April at 25.3%.
4,199 verified observations of tree frogs in Maine, recorded across 11 months of the year on iNaturalist.
When tree frogs are recorded in Maine
Peak month
April
1,062 records (25.3% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 2 | 0% |
| February | 0 | 0% |
| March | 113 | 2.7% |
| Aprilpeak | 1,062 | 25.3% |
| Maypeak | 766 | 18.2% |
| June | 535 | 12.7% |
| July | 526 | 12.5% |
| Augustpeak | 582 | 13.9% |
| September | 489 | 11.6% |
| October | 111 | 2.6% |
| November | 11 | 0.3% |
| December | 2 | 0% |
Tree Frogs you are most likely to see
| Species | Verified observations |
|---|---|
| Spring Peeper | 2,650 |
| Gray Treefrog | 1,537 |
| Cuban Tree Frog | 2 |
| Pacific chorus frog | 1 |
| Green Treefrog | 1 |
In Maine, September carries 11.6% of the year's tree frogs sightings, about 3.3 points above an even month-to-month split. That makes it the 6th busiest of the twelve months, out of 11 months with recorded activity.
Activity is easing off from August (13.9%) into September, and it heads toward October (2.6%) after. The busiest month is April (25.3%), so if timing is flexible, that window is the safer bet.
The tree frogs most often recorded in Maine are Spring Peeper, Gray Treefrog 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
- Spring Peeper2,650 records
- Gray Treefrog1,537 records
- Cuban Tree Frog2 records
- Pacific chorus frog1 records
- Green Treefrog1 records
Plan your tree frog trip in Maine
Start with live tours near Acadia 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 Acadia 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 Acadia National Park
Compare hotels, cabins and lodges close to the best tree frog viewing area in Maine.
Viator
Broader backupBook a tree frog tour in Maine
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 Maine in September?+
Yes. September accounts for 489 of the 4,199 verified tree frogs sightings logged in Maine across the year, which is 11.6% of the annual total.
Is September a good time to see tree frogs in Maine?+
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 Maine?+
April is the single busiest month, with the broader peak running through April, May and August, based on 4,199 verified observations.
Which tree frogs are you most likely to see in Maine?+
The most-recorded species in Maine are Spring Peeper, Gray Treefrog and Cuban Tree Frog, based on all-time iNaturalist counts.
See tree frogs in Maine in other months
More places to see tree frogs
More wildlife in Maine