Port Aransas, Texas · field elev 5 ft
Density Altitude at Mustang Beach (KRAS)
Mustang Beach sits at 5 ft, and even a typical August afternoon (89 °F) only lifts density altitude to about 1,914 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 | 56.4 | −147 ft | 62.3 | 241 ft |
| February | 59.3 | 44 ft | 64.9 | 410 ft |
| March | 65.1 | 423 ft | 70.1 | 746 ft |
| April | 71.2 | 816 ft | 75.8 | 1,109 ft |
| May | 77.3 | 1,204 ft | 81.4 | 1,461 ft |
| June | 82.5 | 1,530 ft | 86.8 | 1,797 ft |
| July | 83.8 | 1,611 ft | 88.0 | 1,871 ft |
| August | 84.3 | 1,642 ft | 88.7 | 1,914 ft |
| September | 81.6 | 1,474 ft | 86.5 | 1,778 ft |
| October | 76.0 | 1,122 ft | 81.2 | 1,449 ft |
| November | 66.3 | 501 ft | 71.8 | 855 ft |
| December | 59.2 | 38 ft | 65.3 | 436 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 KRAS
DENSITY ALTITUDE
Field elevation 5 ft — the air behaves like 1,932 ft.
- PRESSURE ALT
- 6 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 Texas fields
- KTFP — Ingleside Regional
Ingleside · elev 18 ft
- 9R5 — Hunt
Portland · elev 38 ft
- KRKP — Aransas County
Rockport · elev 24 ft
- KCRP — Corpus Christi International
Corpus Christi · elev 46 ft
- T69 — Sinton
Sinton · elev 48 ft
- KRFG — Rooke Field
Refugio · elev 54 ft
- KRBO — Nueces County
Robstown · elev 80 ft
- 07R — Bishop-Windham
Bishop · elev 55 ft
Frequently asked questions
How high does density altitude get at KRAS in summer?
On a typical August afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Mustang Beach reaches roughly 1,914 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 KRAS on an average day?
It swings with the seasons: from roughly −147 ft at the coldest month's average temperature to about 1,642 ft at the warmest month's — all from a constant field elevation of 5 ft. The month-by-month table above carries the full year.
What is the field elevation of Mustang Beach?
5 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRAS (ICAO) / RAS (FAA), in Port Aransas, Texas.