Thibodaux, Louisiana · field elev 9 ft
Density Altitude at Thibodaux Municipal (L83)
Thibodaux Municipal sits at 9 ft, and even a typical August afternoon (92 °F) only lifts density altitude to about 2,127 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 | 54.2 | −289 ft | 63.8 | 344 ft |
| February | 58.2 | −23 ft | 67.9 | 609 ft |
| March | 63.9 | 350 ft | 73.9 | 993 ft |
| April | 69.6 | 719 ft | 79.4 | 1,341 ft |
| May | 76.6 | 1,165 ft | 86.0 | 1,752 ft |
| June | 81.9 | 1,497 ft | 90.5 | 2,029 ft |
| July | 83.6 | 1,603 ft | 92.0 | 2,121 ft |
| August | 83.5 | 1,597 ft | 92.1 | 2,127 ft |
| September | 79.9 | 1,372 ft | 88.8 | 1,925 ft |
| October | 71.4 | 834 ft | 81.8 | 1,491 ft |
| November | 62.2 | 239 ft | 72.7 | 917 ft |
| December | 56.4 | −142 ft | 66.3 | 506 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 L83
DENSITY ALTITUDE
Field elevation 9 ft — the air behaves like 2,121 ft.
- PRESSURE ALT
- 10 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
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- KREG — Louisiana Regional
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- KPTN — Harry P Williams Meml
Patterson · elev 9 ft
- KMSY — Louis Armstrong New Orleans International
New Orleans · elev 3 ft
- KGAO — South Lafourche Leonard Miller Jr
Galliano · elev 0 ft
- 2R1 — Le Maire Meml
Jeanerette · elev 14 ft
- KNEW — Lakefront
New Orleans · elev 7 ft
Frequently asked questions
How high does density altitude get at L83 in summer?
On a typical August afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Thibodaux Municipal reaches roughly 2,127 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 L83 on an average day?
It swings with the seasons: from roughly −289 ft at the coldest month's average temperature to about 1,603 ft at the warmest month's — all from a constant field elevation of 9 ft. The month-by-month table above carries the full year.
What is the field elevation of Thibodaux Municipal?
9 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is L83 (FAA), in Thibodaux, Louisiana.