Del Rey Oaks, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 9 °C (low) to 18 °C (high). Annual precipitation averages 435.1 Millimeters. Del Rey Oaks is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6 °C | 15.7 °C | 91.69 mm |
| February | 6.6 °C | 15.9 °C | 88.65 mm |
| March | 7.2 °C | 16.4 °C | 67.56 mm |
| April | 7.8 °C | 16.9 °C | 32 mm |
| May | 9.5 °C | 17.9 °C | 12.19 mm |
| June | 10.8 °C | 18.8 °C | 2.79 mm |
| July | 12.1 °C | 19.4 °C | 1.02 mm |
| August | 12.4 °C | 20 °C | 0.76 mm |
| September | 11.8 °C | 20.9 °C | 1.78 mm |
| October | 10 °C | 20.7 °C | 18.03 mm |
| November | 7.6 °C | 18.1 °C | 40.39 mm |
| December | 5.7 °C | 15.6 °C | 78.23 mm |
| Annual | 9 °C | 18 °C | 435.09 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| 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 | Csb - Warm-Summer Mediterranean Climate |