Best Time to See Otters in Delaware
April, September and March is the best time to see otters in Delaware. Based on 56 verified iNaturalist observations, here is exactly when otters 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.
North American River Otter · inbetweenbays CC BY
North American River Otter · Elizabeth Green CC BY
North American River Otter · inbetweenbays CC BY
56 verified observations of otters in Delaware, recorded across 12 months of the year on iNaturalist.
When otters are recorded in Delaware
Peak month
April
12 records (21.4% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 4 | 7.1% |
| February | 5 | 8.9% |
| Marchpeak | 8 | 14.3% |
| Aprilpeak | 12 | 21.4% |
| May | 3 | 5.4% |
| June | 2 | 3.6% |
| July | 1 | 1.8% |
| August | 1 | 1.8% |
| Septemberpeak | 9 | 16.1% |
| October | 3 | 5.4% |
| November | 4 | 7.1% |
| December | 4 | 7.1% |
Otters you are most likely to see
| Species | Verified observations |
|---|---|
| North American River Otter | 56 |
Weather to expect, source Open-Meteo
Typical weather in Delaware
Recent typical conditions by month, so you can plan a trip around both when otters are active and what the weather is doing. The best months to look for otters sit around 39 to 77 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" |
| Marbest time | 54°F | 39°F | 3.8" |
| Aprbest time | 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" |
| Aug | 83°F | 72°F | 5.1" |
| Sepbest time | 77°F | 65°F | 4.3" |
| Oct | 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 otters in Delaware:
Sightings of otters in Delaware peak in April, when 12 of the year's 56 verified observations are logged — about 21.4% of the annual total. Activity stays high through April, September and March.
The quietest stretch is July and August, when otters are hardest to find — July sees just 1 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The otters you are most likely to encounter in Delaware are North American River Otter — 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 otters 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 otters in Delaware?+
April is the single best month, and the broader peak window runs through April, September and March, based on 56 verified iNaturalist observations.
When are otters hardest to see in Delaware?+
July is the quietest month for otters in Delaware, with only 1 verified records.
Are otters active year-round in Delaware?+
Otters are recorded in 12 of 12 months in Delaware, so they can be seen year-round, with a clear peak in April.
More places to see otters
More wildlife in Delaware