Best Time to See Jellyfishes in Mississippi
July, September and February is the best time to see jellyfishes in Mississippi. Based on 372 verified iNaturalist observations, here is exactly when jellyfishes are most active across the year in Mississippi.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 2, 2026.
Mushroom Jelly · Tia Offner CC BY
Mushroom Jelly · Tia Offner CC BY
Dwarf Lion's Mane Jelly · Abby Darrah CC BY
372 verified observations of jellyfishes in Mississippi, recorded across 12 months of the year on iNaturalist.
When jellyfishes are recorded in Mississippi
Peak month
July
62 records (16.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 37 | 9.9% |
| Februarypeak | 40 | 10.8% |
| March | 26 | 7% |
| April | 8 | 2.2% |
| May | 5 | 1.3% |
| June | 27 | 7.3% |
| Julypeak | 62 | 16.7% |
| August | 36 | 9.7% |
| Septemberpeak | 61 | 16.4% |
| October | 34 | 9.1% |
| November | 25 | 6.7% |
| December | 11 | 3% |
Jellyfishes you are most likely to see
| Species | Verified observations |
|---|---|
| Bay Nettle | 120 |
| Dwarf Lion's Mane Jelly | 58 |
| Mushroom Jelly | 48 |
| Southern Moon Jelly | 40 |
| Cannonball Jelly | 15 |
| Atlantic Sea Nettle | 12 |
| Pink Meanie | 11 |
Weather to expect, source Open-Meteo
Typical weather in Mississippi
Recent typical conditions by month, so you can plan a trip around both when jellyfishes are active and what the weather is doing. The best months to look for jellyfishes sit around 42 to 90 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 57°F | 40°F | 6" |
| Febbest time | 61°F | 42°F | 6.7" |
| Mar | 69°F | 49°F | 5.4" |
| Apr | 74°F | 54°F | 7.5" |
| May | 82°F | 63°F | 4.9" |
| Jun | 89°F | 70°F | 4.5" |
| Julbest time | 90°F | 74°F | 6" |
| Aug | 90°F | 74°F | 5.7" |
| Sepbest time | 88°F | 69°F | 2.8" |
| Oct | 77°F | 58°F | 4.3" |
| Nov | 66°F | 46°F | 2.9" |
| Dec | 61°F | 44°F | 5.6" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Mississippi. Weather varies year to year, so treat these as a guide.
Sightings of jellyfishes in Mississippi peak in July, when 62 of the year's 372 verified observations are logged — about 16.7% of the annual total. Activity stays high through July, September and February.
The quietest stretch is May, when jellyfishes are hardest to find — May sees just 5 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The jellyfishes you are most likely to encounter in Mississippi are Bay Nettle, Dwarf Lion's Mane Jelly and Mushroom Jelly — 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 jellyfishes in Mississippi
- Gulf Islands National Seashore — National Seashore
- Natchez Trace Parkway — Parkway
- Shiloh National Military Park — National Military Park
- Brices Cross Roads National Battlefield Site — National Battlefield Site
- Emmett Till and Mamie Till-Mobley National Monument — National Monument
- Medgar and Myrlie Evers Home National Monument — National Monument
Frequently asked questions
What is the best month to see jellyfishes in Mississippi?+
July is the single best month, and the broader peak window runs through July, September and February, based on 372 verified iNaturalist observations.
When are jellyfishes hardest to see in Mississippi?+
May is the quietest month for jellyfishes in Mississippi, with only 5 verified records.
Are jellyfishes active year-round in Mississippi?+
Jellyfishes are recorded in 12 of 12 months in Mississippi, so they can be seen year-round, with a clear peak in July.
More places to see jellyfishes
More wildlife in Mississippi