Best Time to See Seals in New Hampshire
February, January and May is the best time to see seals in New Hampshire. Based on 69 verified iNaturalist observations, here is exactly when seals are most active across the year in New Hampshire.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
69 verified observations of seals in New Hampshire, recorded across 12 months of the year on iNaturalist.
When seals are recorded in New Hampshire
Peak month
February
9 records (13% of the year)
| Month | Observations | Share |
|---|---|---|
| Januarypeak | 8 | 11.6% |
| Februarypeak | 9 | 13% |
| March | 2 | 2.9% |
| April | 1 | 1.4% |
| Maypeak | 8 | 11.6% |
| June | 4 | 5.8% |
| July | 6 | 8.7% |
| August | 8 | 11.6% |
| September | 2 | 2.9% |
| October | 6 | 8.7% |
| November | 7 | 10.1% |
| December | 8 | 11.6% |
Seals you are most likely to see
| Species | Verified observations |
|---|---|
| Harbor Seal | 54 |
| Grey Seal | 9 |
| Harp Seal | 3 |
Sightings of seals in New Hampshire peak in February, when 9 of the year's 69 verified observations are logged — about 13% of the annual total. Activity stays high through February, January and May.
The quietest stretch is April, when seals are hardest to find — April sees just 1 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The seals you are most likely to encounter in New Hampshire are Harbor Seal, Grey Seal and Harp Seal — the most-recorded species in the state. Each keeps its own seasonal rhythm, but the month-by-month pattern above reflects every reported sighting together.
Where to go
Best places to see seals in New Hampshire
- Appalachian National Scenic Trail — National Scenic Trail
- Saint-Gaudens National Historical Park — National Historical Park
Tours and experiences nearby
Viator
Book a seal tour in New Hampshire
Guided wildlife tours, boat trips and nature experiences, with free cancellation on most.
Booking.com
Stay near Appalachian National Scenic Trail
Compare hotels, cabins and lodges close to the best seal viewing in New Hampshire.
Frequently asked questions
What is the best month to see seals in New Hampshire?+
February is the single best month, and the broader peak window runs through February, January and May, based on 69 verified iNaturalist observations.
When are seals hardest to see in New Hampshire?+
April is the quietest month for seals in New Hampshire, with only 1 verified records.
Are seals active year-round in New Hampshire?+
Seals are recorded in 12 of 12 months in New Hampshire, so they can be seen year-round, with a clear peak in February.
More wildlife in New Hampshire