Myrtle Beach, South Carolina · field elev 25 ft
Density Altitude at Myrtle Beach International (KMYR)
Myrtle Beach International sits at 25 ft, and even a typical July afternoon (87 °F) only lifts density altitude to about 1,858 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 44.5 | −922 ft | 55.5 | −182 ft |
| February | 46.6 | −780 ft | 57.8 | −30 ft |
| March | 52.7 | −369 ft | 63.7 | 357 ft |
| April | 61.1 | 187 ft | 71.5 | 860 ft |
| May | 69.3 | 719 ft | 78.8 | 1,323 ft |
| June | 76.2 | 1,159 ft | 84.5 | 1,679 ft |
| July | 79.5 | 1,367 ft | 87.4 | 1,858 ft |
| August | 78.3 | 1,291 ft | 86.5 | 1,803 ft |
| September | 74.0 | 1,019 ft | 83.0 | 1,586 ft |
| October | 64.7 | 422 ft | 75.6 | 1,121 ft |
| November | 54.3 | −262 ft | 66.4 | 532 ft |
| December | 47.4 | −725 ft | 58.6 | 23 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for KMYR
DENSITY ALTITUDE
Field elevation 25 ft — the air behaves like 1,834 ft.
- PRESSURE ALT
- 26 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby South Carolina fields
- KCRE — Grand Strand
North Myrtle Beach · elev 32 ft
- KHYW — Conway-Horry County
Conway · elev 35 ft
- 5J9 — Twin City
Loris · elev 99 ft
- KGGE — Georgetown County
Georgetown · elev 40 ft
- KPHH — Robert F Swinnie
Andrews · elev 26 ft
- KMAO — Marion County
Marion · elev 93 ft
- 51J — Lake City Municipal Cj Evans Field
Lake City · elev 80 ft
- KCKI — Williamsburg Regional
Kingstree · elev 67 ft
Frequently asked questions
How high does density altitude get at KMYR in summer?
On a typical July afternoon — around 87 °F at the nearest NOAA normals station — density altitude at Myrtle Beach International reaches roughly 1,858 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at KMYR on an average day?
It swings with the seasons: from roughly −922 ft at the coldest month's average temperature to about 1,367 ft at the warmest month's — all from a constant field elevation of 25 ft. The month-by-month table above carries the full year.
What is the field elevation of Myrtle Beach International?
25 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMYR (ICAO) / MYR (FAA), in Myrtle Beach, South Carolina.