Seals in Massachusetts in November

Yes, November is a good month to see seals in Massachusetts. It is the 4th busiest month of the year, with 273 of the 3,245 sightings logged across the year (8.4%), 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 June 28, 2026.

Atlantic Grey Seal photographed in MassachusettsAtlantic Grey Seal photographed in MassachusettsHarp Seal photographed in Massachusetts
Photos by iNaturalist observers, used under Creative Commons.

Good month for seals in Massachusetts

8.4%

of yearly sightings

273

records in November

#4

busiest month of 12

3,245

verified records a year

October 7.2%, November 8.4%, December 6.8%. Busiest month is August at 15.2%.

Best months: August, July, JunePeak season right now

3,245 verified observations of seals in Massachusetts, recorded across 12 months of the year on iNaturalist.

When seals are recorded in Massachusetts

Peak month

August

494 records (15.2% of the year)

Quietest month

February

164 records

MonthObservationsShare
January1956%
February1645.1%
March2046.3%
April1865.7%
May2076.4%
Junepeak39612.2%
Julypeak40512.5%
Augustpeak49415.2%
September2658.2%
October2357.2%
November2738.4%
December2216.8%

Seals you are most likely to see

SpeciesVerified observations
Grey Seal2,068
Harbor Seal943
Harp Seal57
Hooded Seal1

In Massachusetts, November carries 8.4% of the year's seals sightings, about 0.1 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 rising from October (7.2%) into November, and it heads toward December (6.8%) after. The busiest month is August (15.2%), so if timing is flexible, that window is the safer bet.

The seals most often recorded in Massachusetts are Grey Seal, Harbor Seal and Harp Seal. Those counts are annual totals rather than a November split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in November itself.

Which seals you are most likely to see

  • Grey Seal2,068 records
  • Harbor Seal943 records
  • Harp Seal57 records
  • Hooded Seal1 records
Plan your tripAppalachian National Scenic Trail

Plan your seal trip in Massachusetts

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 seals in Massachusetts in November?+

Yes. November accounts for 273 of the 3,245 verified seals sightings logged in Massachusetts across the year, which is 8.4% of the annual total.

Is November a good time to see seals in Massachusetts?+

November is the 4th busiest month. It is workable, though August and July is the stronger window for a reliable sighting.

What month is best for seals in Massachusetts?+

August is the single busiest month, with the broader peak running through August, July and June, based on 3,245 verified observations.

Which seals are you most likely to see in Massachusetts?+

The most-recorded species in Massachusetts are Grey Seal, Harbor Seal and Harp Seal, based on all-time iNaturalist counts.