Best Time to See Monarch Butterflies in South Carolina
October, September and August is the best time to see monarch butterflies in South Carolina. Based on 1,991 verified iNaturalist observations, here is exactly when monarch butterflies are most active across the year in South Carolina.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
1,991 verified observations of monarch butterflies in South Carolina, recorded across 12 months of the year on iNaturalist.
When monarch butterflies are recorded in South Carolina
Peak month
October
545 records (27.4% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 17 | 0.9% |
| February | 6 | 0.3% |
| March | 22 | 1.1% |
| April | 143 | 7.2% |
| May | 187 | 9.4% |
| June | 85 | 4.3% |
| July | 66 | 3.3% |
| Augustpeak | 298 | 15% |
| Septemberpeak | 409 | 20.5% |
| Octoberpeak | 545 | 27.4% |
| November | 173 | 8.7% |
| December | 40 | 2% |
Monarch Butterflies you are most likely to see
| Species | Verified observations |
|---|---|
| Monarch | 1,991 |
Weather to expect, source Open-Meteo
Typical weather in South Carolina
Recent typical conditions by month, so you can plan a trip around both when monarch butterflies are active and what the weather is doing. The best months to look for monarch butterflies sit around 58 to 90 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 57°F | 41°F | 4.6" |
| Feb | 63°F | 44°F | 4" |
| Mar | 69°F | 49°F | 4" |
| Apr | 76°F | 54°F | 4.5" |
| May | 83°F | 63°F | 3.4" |
| Jun | 88°F | 69°F | 4.2" |
| Jul | 92°F | 74°F | 5.2" |
| Augbest time | 90°F | 73°F | 4.9" |
| Sepbest time | 85°F | 67°F | 4.1" |
| Octbest time | 77°F | 58°F | 2.3" |
| Nov | 66°F | 47°F | 2.7" |
| Dec | 60°F | 43°F | 4.5" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for South Carolina. Weather varies year to year, so treat these as a guide.
More on monarch butterflies in South Carolina:
Sightings of monarch butterflies in South Carolina peak in October, when 545 of the year's 1,991 verified observations are logged — about 27.4% of the annual total. Activity stays high through October, September and August.
The quietest stretch is February, when monarch butterflies are hardest to find — February sees just 6 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The monarch butterflies you are most likely to encounter in South Carolina are Monarch — 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 monarch butterflies in South Carolina
- Charles Pinckney National Historic Site — National Historic Site
- Fort Sumter and Fort Moultrie National Historical Park — National Historical Park
- Ninety Six National Historic Site — National Historic Site
- Overmountain Victory National Historic Trail — National Historic Trail
- Congaree National Park — National Park
- Cowpens National Battlefield — National Battlefield
Frequently asked questions
What is the best month to see monarch butterflies in South Carolina?+
October is the single best month, and the broader peak window runs through October, September and August, based on 1,991 verified iNaturalist observations.
When are monarch butterflies hardest to see in South Carolina?+
February is the quietest month for monarch butterflies in South Carolina, with only 6 verified records.
Are monarch butterflies active year-round in South Carolina?+
Monarch butterflies are recorded in 12 of 12 months in South Carolina, so they can be seen year-round, with a clear peak in October.
More places to see monarch butterflies
More wildlife in South Carolina