Tree Frogs in New Hampshire in September

Yes, September is one of the best months to see tree frogs in New Hampshire. It is the 3rd busiest month of the year, with 461 of the 2,822 sightings logged across the year (16.3%), based on verified iNaturalist records.

T

By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 2, 2026.

Gray Treefrog photographed in New HampshireSpring Peeper photographed in New HampshireGray Treefrog photographed in New Hampshire
Photos by iNaturalist observers, used under Creative Commons.

Peak month for tree frogs in New Hampshire

16.3%

of yearly sightings

461

records in September

#3

busiest month of 12

2,822

verified records a year

August 19.3%, September 16.3%, October 3.8%. Busiest month is August at 19.3%.

Best months: August, May, September

2,822 verified observations of tree frogs in New Hampshire, recorded across 12 months of the year on iNaturalist.

When tree frogs are recorded in New Hampshire

Peak month

August

546 records (19.3% of the year)

Quietest month

February

1 records

MonthObservationsShare
January20.1%
February10%
March953.4%
April2799.9%
Maypeak54319.2%
June39814.1%
July37713.4%
Augustpeak54619.3%
Septemberpeak46116.3%
October1083.8%
November60.2%
December60.2%

Tree Frogs you are most likely to see

SpeciesVerified observations
Spring Peeper1,506
Gray Treefrog1,303
Cuban Tree Frog1

In New Hampshire, September carries 16.3% of the year's tree frogs sightings, about 8 points above an even month-to-month split. That makes it the 3rd busiest of the twelve months, out of 12 months with recorded activity.

Activity is easing off from August (19.3%) into September, and it heads toward October (3.8%) after. This is right inside the peak window, so September is one of the surest months to plan a trip around.

The tree frogs most often recorded in New Hampshire 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 Peeper1,506 records
  • Gray Treefrog1,303 records
  • Cuban Tree Frog1 records
Plan your tripAppalachian National Scenic Trail

Plan your tree frog trip in New Hampshire

Start with live tours near Appalachian National Scenic Trail, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

Can you see tree frogs in New Hampshire in September?+

Yes. September accounts for 461 of the 2,822 verified tree frogs sightings logged in New Hampshire across the year, which is 16.3% of the annual total.

Is September a good time to see tree frogs in New Hampshire?+

September is one of the best months. It ranks 3rd of the year and sits inside the peak window of August, May and September.

What month is best for tree frogs in New Hampshire?+

August is the single busiest month, with the broader peak running through August, May and September, based on 2,822 verified observations.

Which tree frogs are you most likely to see in New Hampshire?+

The most-recorded species in New Hampshire are Spring Peeper, Gray Treefrog and Cuban Tree Frog, based on all-time iNaturalist counts.