Best Time to See Sea Turtles in Massachusetts
November, August and December is the best time to see sea turtles in Massachusetts. Based on 82 verified iNaturalist observations, here is exactly when sea turtles are most active across the year in Massachusetts.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Loggerhead Sea Turtle · Fives CC BY
Kemp's Ridley Sea Turtle · Fives CC BY
Kemp's Ridley Sea Turtle · Ali Campbell CC BY
82 verified observations of sea turtles in Massachusetts, recorded across 11 months of the year on iNaturalist.
When sea turtles are recorded in Massachusetts
Peak month
November
22 records (26.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 2 | 2.4% |
| February | 0 | 0% |
| March | 4 | 4.9% |
| April | 4 | 4.9% |
| May | 1 | 1.2% |
| June | 3 | 3.7% |
| July | 6 | 7.3% |
| Augustpeak | 12 | 14.6% |
| September | 8 | 9.8% |
| October | 8 | 9.8% |
| Novemberpeak | 22 | 26.8% |
| Decemberpeak | 12 | 14.6% |
Sea Turtles you are most likely to see
| Species | Verified observations |
|---|---|
| Kemp's Ridley Sea Turtle | 41 |
| Loggerhead Sea Turtle | 24 |
| Green Sea Turtle | 10 |
Weather to expect, source Open-Meteo
Typical weather in Massachusetts
Recent typical conditions by month, so you can plan a trip around both when sea turtles are active and what the weather is doing. The best months to look for sea turtles sit around 27 to 82 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 37°F | 22°F | 3.8" |
| Feb | 39°F | 22°F | 3.4" |
| Mar | 48°F | 28°F | 3.6" |
| Apr | 57°F | 38°F | 4.6" |
| May | 68°F | 47°F | 3.4" |
| Jun | 78°F | 58°F | 3.6" |
| Jul | 83°F | 65°F | 5.4" |
| Augbest time | 82°F | 64°F | 3.5" |
| Sep | 73°F | 56°F | 5.3" |
| Oct | 62°F | 47°F | 5.3" |
| Novbest time | 50°F | 34°F | 3.1" |
| Decbest time | 42°F | 27°F | 5.9" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Massachusetts. Weather varies year to year, so treat these as a guide.
Sightings of sea turtles in Massachusetts peak in November, when 22 of the year's 82 verified observations are logged — about 26.8% of the annual total. Activity stays high through November, August and December.
The quietest stretch is February and May, when sea turtles are hardest to find — no verified records exist for February. If a reliable sighting matters, plan around the peak window rather than the off-season.
The sea turtles you are most likely to encounter in Massachusetts are Kemp's Ridley Sea Turtle, Loggerhead Sea Turtle and Green Sea Turtle — 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 sea turtles in Massachusetts
- Appalachian National Scenic Trail — National Scenic Trail
- Blackstone River Valley National Historical Park — National Historical Park
- Boston Harbor Islands National Recreation Area — National Recreation Area
- Cape Cod National Seashore — National Seashore
- Adams National Historical Park — National Historical Park
- Boston African American National Historic Site — National Historic Site
Frequently asked questions
What is the best month to see sea turtles in Massachusetts?+
November is the single best month, and the broader peak window runs through November, August and December, based on 82 verified iNaturalist observations.
When are sea turtles hardest to see in Massachusetts?+
February is the quietest month for sea turtles in Massachusetts, with no verified records on iNaturalist.
Are sea turtles active year-round in Massachusetts?+
Sea turtles are recorded in 11 of 12 months in Massachusetts, so they can be seen year-round, with a clear peak in November.
More places to see sea turtles
More wildlife in Massachusetts