Best Time to See Whales in Connecticut
April, September and October is the best time to see whales in Connecticut. Based on 9 verified iNaturalist observations, here is exactly when whales are most active across the year in Connecticut.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
9 verified observations of whales in Connecticut, recorded across 6 months of the year on iNaturalist.
When whales are recorded in Connecticut
Peak month
April
2 records (22.2% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| Aprilpeak | 2 | 22.2% |
| May | 1 | 11.1% |
| June | 0 | 0% |
| July | 0 | 0% |
| August | 1 | 11.1% |
| Septemberpeak | 2 | 22.2% |
| Octoberpeak | 2 | 22.2% |
| November | 0 | 0% |
| December | 1 | 11.1% |
Whales you are most likely to see
| Species | Verified observations |
|---|---|
| Tamanend's Bottlenose Dolphin | 3 |
| Harbour Porpoise | 1 |
| Pygmy Sperm Whale | 1 |
| Common Bottlenose Dolphin | 1 |
| Humpback Whale | 1 |
| Atlantic White-sided Dolphin | 1 |
Weather to expect, source Open-Meteo
Typical weather in Connecticut
Recent typical conditions by month, so you can plan a trip around both when whales are active and what the weather is doing. The best months to look for whales sit around 39 to 74 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 39°F | 24°F | 4.2" |
| Feb | 41°F | 24°F | 3.6" |
| Mar | 49°F | 30°F | 4.2" |
| Aprbest time | 58°F | 39°F | 5.5" |
| May | 68°F | 48°F | 4" |
| Jun | 78°F | 59°F | 3.6" |
| Jul | 84°F | 66°F | 5.2" |
| Aug | 82°F | 65°F | 4.1" |
| Sepbest time | 74°F | 58°F | 5.9" |
| Octbest time | 64°F | 48°F | 5.6" |
| Nov | 51°F | 35°F | 3.1" |
| Dec | 43°F | 29°F | 5.9" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Connecticut. Weather varies year to year, so treat these as a guide.
More on whales in Connecticut:
Sightings of whales in Connecticut peak in April, when 2 of the year's 9 verified observations are logged — about 22.2% of the annual total. Activity stays high through April, September and October.
The quietest stretch is January, February and March, when 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 whales you are most likely to encounter in Connecticut are Tamanend's Bottlenose Dolphin, Harbour Porpoise and Pygmy Sperm 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 whales in Connecticut
- Appalachian National Scenic Trail — National Scenic Trail
- Coltsville National Historical Park — National Historical Park
- New England National Scenic Trail — National Scenic Trail
- Washington-Rochambeau Revolutionary Route National Historic Trail — National Historic Trail
- Weir Farm National Historical Park — National Historical Park
Frequently asked questions
What is the best month to see whales in Connecticut?+
April is the single best month, and the broader peak window runs through April, September and October, based on 9 verified iNaturalist observations.
When are whales hardest to see in Connecticut?+
January is the quietest month for whales in Connecticut, with no verified records on iNaturalist.
Are whales active year-round in Connecticut?+
Whales are recorded in 6 of 12 months in Connecticut, concentrated around April and September.
More places to see whales
More wildlife in Connecticut