Oak Island, North Carolina · field elev 26 ft
Density Altitude at Cape Fear Regional Jetport/Howie Franklin Field (KSUT)
Cape Fear Regional Jetport/Howie Franklin Field sits at 26 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,117 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 | 47.8 | −697 ft | 60.0 | 116 ft |
| February | 50.1 | −542 ft | 62.5 | 280 ft |
| March | 55.5 | −181 ft | 68.2 | 649 ft |
| April | 63.3 | 332 ft | 75.8 | 1,135 ft |
| May | 71.2 | 842 ft | 82.5 | 1,556 ft |
| June | 78.7 | 1,318 ft | 88.4 | 1,921 ft |
| July | 82.2 | 1,537 ft | 91.6 | 2,117 ft |
| August | 80.8 | 1,449 ft | 90.4 | 2,044 ft |
| September | 76.3 | 1,166 ft | 86.5 | 1,804 ft |
| October | 66.6 | 546 ft | 78.9 | 1,330 ft |
| November | 57.1 | −75 ft | 69.9 | 759 ft |
| December | 50.5 | −515 ft | 62.9 | 306 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 KSUT
DENSITY ALTITUDE
Field elevation 26 ft — the air behaves like 2,142 ft.
- PRESSURE ALT
- 27 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 North Carolina fields
- 60J — Odell Williamson Municipal
Ocean Isle Beach · elev 33 ft
- KILM — Wilmington International
Wilmington · elev 32 ft
- KCPC — Columbus County Regional
Whiteville · elev 99 ft
- KACZ — Wallace-Pender
Wallace · elev 38 ft
- KEYF — Curtis L Brown Jr Field
Elizabethtown · elev 131 ft
- 3W6 — Bladenboro
Bladenboro · elev 116 ft
- N22 — Sky Manor
Jacksonville · elev 60 ft
- KOAJ — Albert J Ellis
Jacksonville · elev 93 ft
Frequently asked questions
How high does density altitude get at KSUT in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Cape Fear Regional Jetport/Howie Franklin Field reaches roughly 2,117 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 KSUT on an average day?
It swings with the seasons: from roughly −697 ft at the coldest month's average temperature to about 1,537 ft at the warmest month's — all from a constant field elevation of 26 ft. The month-by-month table above carries the full year.
What is the field elevation of Cape Fear Regional Jetport/Howie Franklin Field?
26 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSUT (ICAO) / SUT (FAA), in Oak Island, North Carolina.