Aptos, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 47.7 °F (low) to 63.5 °F (high). Annual precipitation averages 28 Inches. Aptos is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.4 °F | 59.8 °F | 5.87 in. |
| February | 43.3 °F | 60.5 °F | 5.83 in. |
| March | 44.1 °F | 62.0 °F | 3.74 in. |
| April | 45.2 °F | 61.9 °F | 1.99 in. |
| May | 48.5 °F | 63.3 °F | 0.73 in. |
| June | 50.9 °F | 64.9 °F | 0.3 in. |
| July | 53.5 °F | 65.1 °F | 0.04 in. |
| August | 54.1 °F | 66.5 °F | 0.1 in. |
| September | 52.9 °F | 67.2 °F | 0.12 in. |
| October | 49.7 °F | 67.2 °F | 1.3 in. |
| November | 45.4 °F | 64.3 °F | 2.61 in. |
| December | 41.9 °F | 59.4 °F | 5.37 in. |
| Annual | 47.7 °F | 63.5 °F | 28 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |