Aransas Pass, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 19 °C (low) to 26.1 °C (high). Annual precipitation averages 922.3 Millimeters. Aransas Pass is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.7 °C | 17.9 °C | 52.07 mm |
| February | 11.8 °C | 19.6 °C | 45.97 mm |
| March | 15.1 °C | 22.3 °C | 61.72 mm |
| April | 18.9 °C | 25.8 °C | 47.75 mm |
| May | 22.8 °C | 28.7 °C | 87.63 mm |
| June | 25.6 °C | 31.4 °C | 91.44 mm |
| July | 26.3 °C | 32.1 °C | 70.1 mm |
| August | 26.2 °C | 32.7 °C | 73.91 mm |
| September | 24.3 °C | 31.5 °C | 147.83 mm |
| October | 20.8 °C | 28.2 °C | 115.32 mm |
| November | 15.3 °C | 23.2 °C | 70.1 mm |
| December | 10.8 °C | 19.3 °C | 58.42 mm |
| Annual | 19 °C | 26.1 °C | 922.26 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |