Jellyfishes in Washington in June

Yes, June is one of the best months to see jellyfishes in Washington. It is the 2nd busiest month of the year, with 1,485 of the 6,847 sightings logged across the year (21.7%), 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.

Peak month for jellyfishes in Washington

21.7%

of yearly sightings

1,485

records in June

#2

busiest month of 12

6,847

verified records a year

May 6%, June 21.7%, July 23.8%. Busiest month is July at 23.8%.

Best months: July, June, AugustPeak season right now

6,847 verified observations of jellyfishes in Washington, recorded across 12 months of the year on iNaturalist.

When jellyfishes are recorded in Washington

Peak month

July

1,633 records (23.8% of the year)

Quietest month

February

44 records

MonthObservationsShare
January941.4%
February440.6%
March580.8%
April1081.6%
May4086%
Junepeak1,48521.7%
Julypeak1,63323.8%
Augustpeak1,16617%
September79111.6%
October5968.7%
November3264.8%
December1382%

Jellyfishes you are most likely to see

SpeciesVerified observations
Egg-yolk Jelly2,875
Pacific Lion's Mane Jelly1,923
Greater Moon Jelly938
Pacific Sea Nettle372
Asian moon jellyfish4
Common Moon Jelly2
Crown Jellies1

In Washington, June carries 21.7% of the year's jellyfishes sightings, about 13.4 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 rising from May (6%) into June, and it heads toward July (23.8%) after. This is right inside the peak window, so June is one of the surest months to plan a trip around.

The jellyfishes most often recorded in Washington are Egg-yolk Jelly, Pacific Lion's Mane Jelly and Greater Moon Jelly. 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 jellyfishes you are most likely to see

  • Egg-yolk Jelly2,875 records
  • Pacific Lion's Mane Jelly1,923 records
  • Greater Moon Jelly938 records
  • Pacific Sea Nettle372 records
  • Asian moon jellyfish4 records
  • Common Moon Jelly2 records
Plan your tripEbey's Landing National Historical Reserve

Plan your jellyfish trip in Washington

Start with live tours near Ebey's Landing National Historical Reserve, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

Can you see jellyfishes in Washington in June?+

Yes. June accounts for 1,485 of the 6,847 verified jellyfishes sightings logged in Washington across the year, which is 21.7% of the annual total.

Is June a good time to see jellyfishes in Washington?+

June is one of the best months. It ranks 2nd of the year and sits inside the peak window of July, June and August.

What month is best for jellyfishes in Washington?+

July is the single busiest month, with the broader peak running through July, June and August, based on 6,847 verified observations.

Which jellyfishes are you most likely to see in Washington?+

The most-recorded species in Washington are Egg-yolk Jelly, Pacific Lion's Mane Jelly and Greater Moon Jelly, based on all-time iNaturalist counts.