Jellyfishes in New Jersey in August
Yes, August is one of the best months to see jellyfishes in New Jersey. It is the 2nd busiest month of the year, with 142 of the 763 sightings logged across the year (18.6%), based on verified iNaturalist records.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 2, 2026.
Peak month for jellyfishes in New Jersey
18.6%
of yearly sightings
142
records in August
#2
busiest month of 12
763
verified records a year
July 37.5%, August 18.6%, September 7.6%. Busiest month is July at 37.5%.
763 verified observations of jellyfishes in New Jersey, recorded across 12 months of the year on iNaturalist.
When jellyfishes are recorded in New Jersey
Peak month
July
286 records (37.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 3 | 0.4% |
| February | 3 | 0.4% |
| March | 11 | 1.4% |
| April | 27 | 3.5% |
| May | 18 | 2.4% |
| Junepeak | 127 | 16.6% |
| Julypeak | 286 | 37.5% |
| Augustpeak | 142 | 18.6% |
| September | 58 | 7.6% |
| October | 59 | 7.7% |
| November | 24 | 3.1% |
| December | 5 | 0.7% |
Jellyfishes you are most likely to see
| Species | Verified observations |
|---|---|
| Mushroom Jelly | 240 |
| Bay Nettle | 144 |
| Dwarf Lion's Mane Jelly | 76 |
| Atlantic Sea Nettle | 30 |
| Atlantic Lion's Mane Jelly | 23 |
| Mauve Stinger | 19 |
| Cannonball Jelly | 15 |
| Common Moon Jelly | 14 |
In New Jersey, August carries 18.6% of the year's jellyfishes sightings, about 10.3 points above an even month-to-month split. That makes it the 2nd busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from July (37.5%) into August, and it heads toward September (7.6%) after. This is right inside the peak window, so August is one of the surest months to plan a trip around.
The jellyfishes most often recorded in New Jersey are Mushroom Jelly, Bay Nettle and Dwarf Lion's Mane Jelly. Those counts are annual totals rather than a August split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in August itself.
Which jellyfishes you are most likely to see
- Mushroom Jelly240 records
- Bay Nettle144 records
- Dwarf Lion's Mane Jelly76 records
- Atlantic Sea Nettle30 records
- Atlantic Lion's Mane Jelly23 records
- Mauve Stinger19 records
Plan your jellyfish trip in New Jersey
Start with live tours near Appalachian National Scenic Trail, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Appalachian National Scenic Trail
Use the live GetYourGuide widget to compare local departures and activity styles close to the main jellyfish viewing area.
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Stay nearbyStay near Appalachian National Scenic Trail
Compare hotels, cabins and lodges close to the best jellyfish viewing area in New Jersey.
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Broader backupBook a jellyfish tour in New Jersey
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
Can you see jellyfishes in New Jersey in August?+
Yes. August accounts for 142 of the 763 verified jellyfishes sightings logged in New Jersey across the year, which is 18.6% of the annual total.
Is August a good time to see jellyfishes in New Jersey?+
August is one of the best months. It ranks 2nd of the year and sits inside the peak window of July, August and June.
What month is best for jellyfishes in New Jersey?+
July is the single busiest month, with the broader peak running through July, August and June, based on 763 verified observations.
Which jellyfishes are you most likely to see in New Jersey?+
The most-recorded species in New Jersey are Mushroom Jelly, Bay Nettle and Dwarf Lion's Mane Jelly, based on all-time iNaturalist counts.
See jellyfishes in New Jersey in other months
More places to see jellyfishes
More wildlife in New Jersey