Best Time to See Sea Turtles in Delaware
August, September and October is the best time to see sea turtles in Delaware. Based on 34 verified iNaturalist observations, here is exactly when sea turtles are most active across the year in Delaware.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
34 verified observations of sea turtles in Delaware, recorded across 9 months of the year on iNaturalist.
When sea turtles are recorded in Delaware
Peak month
August
9 records (26.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 1 | 2.9% |
| March | 0 | 0% |
| April | 0 | 0% |
| May | 1 | 2.9% |
| June | 5 | 14.7% |
| July | 3 | 8.8% |
| Augustpeak | 9 | 26.5% |
| Septemberpeak | 6 | 17.6% |
| Octoberpeak | 6 | 17.6% |
| November | 2 | 5.9% |
| December | 1 | 2.9% |
Sea Turtles you are most likely to see
| Species | Verified observations |
|---|---|
| Loggerhead Sea Turtle | 23 |
| Green Sea Turtle | 3 |
| Kemp's Ridley Sea Turtle | 3 |
Weather to expect, source Open-Meteo
Typical weather in Delaware
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 55 to 83 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 44°F | 32°F | 2.9" |
| Feb | 47°F | 33°F | 3.8" |
| Mar | 54°F | 39°F | 3.8" |
| Apr | 63°F | 48°F | 4.5" |
| May | 70°F | 56°F | 3.9" |
| Jun | 79°F | 66°F | 3.9" |
| Jul | 86°F | 73°F | 6" |
| Augbest time | 83°F | 72°F | 5.1" |
| Sepbest time | 77°F | 65°F | 4.3" |
| Octbest time | 68°F | 55°F | 4.4" |
| Nov | 56°F | 43°F | 2.8" |
| Dec | 48°F | 36°F | 4.8" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Delaware. Weather varies year to year, so treat these as a guide.
More on sea turtles in Delaware:
Sightings of sea turtles in Delaware peak in August, when 9 of the year's 34 verified observations are logged — about 26.5% of the annual total. Activity stays high through August, September and October.
The quietest stretch is January, March and April, when sea turtles 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 sea turtles you are most likely to encounter in Delaware are Loggerhead Sea Turtle, Green Sea Turtle and Kemp's Ridley 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 Delaware
- Captain John Smith Chesapeake National Historic Trail — National Historic Trail
- Chesapeake Bay
- First State National Historical Park — National Historical Park
- Washington-Rochambeau Revolutionary Route National Historic Trail — National Historic Trail
Frequently asked questions
What is the best month to see sea turtles in Delaware?+
August is the single best month, and the broader peak window runs through August, September and October, based on 34 verified iNaturalist observations.
When are sea turtles hardest to see in Delaware?+
January is the quietest month for sea turtles in Delaware, with no verified records on iNaturalist.
Are sea turtles active year-round in Delaware?+
Sea turtles are recorded in 9 of 12 months in Delaware, concentrated around August and September.
More places to see sea turtles
More wildlife in Delaware