Best Time to See Humpback Whales in Maine
July, August and June is the best time to see humpback whales in Maine. Based on 82 verified iNaturalist observations, here is exactly when humpback whales are most active across the year in Maine.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 10, 2026.
82 verified observations of humpback whales in Maine, recorded across 7 months of the year on iNaturalist.
When humpback whales are recorded in Maine
Peak month
July
33 records (40.2% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 2 | 2.4% |
| May | 4 | 4.9% |
| Junepeak | 15 | 18.3% |
| Julypeak | 33 | 40.2% |
| Augustpeak | 20 | 24.4% |
| September | 3 | 3.7% |
| October | 5 | 6.1% |
| November | 0 | 0% |
| December | 0 | 0% |
Humpback Whales you are most likely to see
| Species | Verified observations |
|---|---|
| Humpback Whale | 82 |
Sightings of humpback whales in Maine peak in July, when 33 of the year's 82 verified observations are logged — about 40.2% of the annual total. Activity stays high through July, August and June.
The quietest stretch is January, February and March, when humpback whales are hardest to find — no verified records exist for January. If a reliable sighting matters, plan around the peak window rather than the off-season.
The humpback whales you are most likely to encounter in Maine are Humpback Whale — 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 humpback whales in Maine
- Acadia National Park — National Park
- Appalachian National Scenic Trail — National Scenic Trail
- Katahdin Woods and Waters National Monument — National Monument
- Saint Croix Island International Historic Site — International Historic Site
- Frances Perkins National Monument — National Monument
- Maine Acadian Culture
Plan your humpback whale 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 humpback whale viewing area.
Booking.com
Stay nearbyStay near Acadia National Park
Compare hotels, cabins and lodges close to the best humpback whale viewing area in Maine.
Viator
Broader backupBook a humpback whale 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
What is the best month to see humpback whales in Maine?+
July is the single best month, and the broader peak window runs through July, August and June, based on 82 verified iNaturalist observations.
When are humpback whales hardest to see in Maine?+
January is the quietest month for humpback whales in Maine, with no verified records on iNaturalist.
Are humpback whales active year-round in Maine?+
Humpback whales are recorded in 7 of 12 months in Maine, concentrated around July and August.
More wildlife in Maine