Seals in Maine in September
Yes, September is a good month to see seals in Maine. It is the 5th busiest month of the year, with 214 of the 2,276 sightings logged across the year (9.4%), 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 seals in Maine
9.4%
of yearly sightings
214
records in September
#5
busiest month of 12
2,276
verified records a year
August 19.8%, September 9.4%, October 7%. Busiest month is July at 22.3%.
2,276 verified observations of seals in Maine, recorded across 12 months of the year on iNaturalist.
When seals are recorded in Maine
Peak month
July
507 records (22.3% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 27 | 1.2% |
| February | 26 | 1.1% |
| March | 30 | 1.3% |
| April | 46 | 2% |
| May | 245 | 10.8% |
| Junepeak | 480 | 21.1% |
| Julypeak | 507 | 22.3% |
| Augustpeak | 450 | 19.8% |
| September | 214 | 9.4% |
| October | 159 | 7% |
| November | 53 | 2.3% |
| December | 39 | 1.7% |
Seals you are most likely to see
| Species | Verified observations |
|---|---|
| Harbor Seal | 1,553 |
| Grey Seal | 607 |
| Harp Seal | 9 |
In Maine, September carries 9.4% of the year's seals sightings, about 1.1 points above an even month-to-month split. That makes it the 5th busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from August (19.8%) into September, and it heads toward October (7%) after. The busiest month is July (22.3%), so if timing is flexible, that window is the safer bet.
The seals most often recorded in Maine are Harbor Seal, Grey Seal and Harp Seal. 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 seals you are most likely to see
- Harbor Seal1,553 records
- Grey Seal607 records
- Harp Seal9 records
Plan your seal 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 seal viewing area.
Booking.com
Stay nearbyStay near Acadia National Park
Compare hotels, cabins and lodges close to the best seal viewing area in Maine.
Viator
Broader backupBook a seal 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 seals in Maine in September?+
Yes. September accounts for 214 of the 2,276 verified seals sightings logged in Maine across the year, which is 9.4% of the annual total.
Is September a good time to see seals in Maine?+
September is the 5th busiest month. It is workable, though July and June is the stronger window for a reliable sighting.
What month is best for seals in Maine?+
July is the single busiest month, with the broader peak running through July, June and August, based on 2,276 verified observations.
Which seals are you most likely to see in Maine?+
The most-recorded species in Maine are Harbor Seal, Grey Seal and Harp Seal, based on all-time iNaturalist counts.
See seals in Maine in other months
More wildlife in Maine