Dolphins in Delaware in June

Yes, June is a good month to see dolphins in Delaware. It is the 5th busiest month of the year, with 27 of the 228 sightings logged across the year (11.8%), based on verified iNaturalist records.

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By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.

Tamanend's Bottlenose Dolphin photographed in DelawareTamanend's Bottlenose Dolphin photographed in DelawareTamanend's Bottlenose Dolphin photographed in Delaware
Photos by iNaturalist observers, used under Creative Commons.

Good month for dolphins in Delaware

11.8%

of yearly sightings

27

records in June

#5

busiest month of 12

228

verified records a year

May 14%, June 11.8%, July 17.5%. Busiest month is August at 20.2%.

Best months: August, July, MayPeak season right now

228 verified observations of dolphins in Delaware, recorded across 11 months of the year on iNaturalist.

When dolphins are recorded in Delaware

Peak month

August

46 records (20.2% of the year)

Quietest month

December

No verified records

MonthObservationsShare
January10.4%
February10.4%
March93.9%
April177.5%
Maypeak3214%
June2711.8%
Julypeak4017.5%
Augustpeak4620.2%
September229.6%
October3214%
November10.4%
December00%

Dolphins you are most likely to see

SpeciesVerified observations
Tamanend's Bottlenose Dolphin210
Common Dolphin1

In Delaware, June carries 11.8% of the year's dolphins sightings, about 3.5 points above an even month-to-month split. That makes it the 5th busiest of the twelve months, out of 11 months with recorded activity.

Activity is easing off from May (14%) into June, and it heads toward July (17.5%) after. The busiest month is August (20.2%), so if timing is flexible, that window is the safer bet.

The dolphins most often recorded in Delaware are Tamanend's Bottlenose Dolphin and Common Dolphin. Those counts are annual totals rather than a June split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in June itself.

Which dolphins you are most likely to see

  • Tamanend's Bottlenose Dolphin210 records
  • Common Dolphin1 records
Plan your tripCaptain John Smith Chesapeake National Historic Trail

Plan your dolphin trip in Delaware

Start with live tours near Captain John Smith Chesapeake National Historic Trail, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

Can you see dolphins in Delaware in June?+

Yes. June accounts for 27 of the 228 verified dolphins sightings logged in Delaware across the year, which is 11.8% of the annual total.

Is June a good time to see dolphins in Delaware?+

June is the 5th busiest month. It is workable, though August and July is the stronger window for a reliable sighting.

What month is best for dolphins in Delaware?+

August is the single busiest month, with the broader peak running through August, July and May, based on 228 verified observations.

Which dolphins are you most likely to see in Delaware?+

The most-recorded species in Delaware are Tamanend's Bottlenose Dolphin and Common Dolphin, based on all-time iNaturalist counts.