Montauk, New York · field elev 7 ft
Density Altitude at Montauk (KMTP)
Montauk sits at 7 ft, and even a typical July afternoon (80 °F) only lifts density altitude to about 1,395 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 | 33.7 | −1,691 ft | 39.6 | −1,281 ft |
| February | 34.3 | −1,649 ft | 40.5 | −1,219 ft |
| March | 39.5 | −1,288 ft | 45.8 | −856 ft |
| April | 48.1 | −700 ft | 55.0 | −238 ft |
| May | 57.0 | −105 ft | 64.4 | 380 ft |
| June | 66.9 | 542 ft | 74.2 | 1,010 ft |
| July | 73.2 | 946 ft | 80.3 | 1,395 ft |
| August | 72.9 | 927 ft | 79.6 | 1,351 ft |
| September | 66.7 | 529 ft | 73.1 | 940 ft |
| October | 57.1 | −99 ft | 63.3 | 309 ft |
| November | 47.6 | −734 ft | 53.5 | −338 ft |
| December | 39.4 | −1,295 ft | 45.3 | −890 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 KMTP
DENSITY ALTITUDE
Field elevation 7 ft — the air behaves like 1,376 ft.
- PRESSURE ALT
- 8 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 New York fields
- 0B8 — Elizabeth Field
Fishers Island · elev 7 ft
- KJPX — East Hampton Town
East Hampton · elev 55 ft
- 21N — Mattituck
Mattituck · elev 30 ft
- KFOK — Francis S Gabreski
Westhampton Beach · elev 66 ft
- KHWV — Brookhaven
Shirley · elev 81 ft
- 23N — Bayport Aerodrome
Bayport · elev 39 ft
- KISP — Long Island Mac Arthur
New York · elev 99 ft
- KFRG — Republic
Farmingdale · elev 82 ft
Frequently asked questions
How high does density altitude get at KMTP in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Montauk reaches roughly 1,395 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 KMTP on an average day?
It swings with the seasons: from roughly −1,691 ft at the coldest month's average temperature to about 946 ft at the warmest month's — all from a constant field elevation of 7 ft. The month-by-month table above carries the full year.
What is the field elevation of Montauk?
7 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMTP (ICAO) / MTP (FAA), in Montauk, New York.