Pacific Beach, Washington has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 6.7 °C (low) to 13.9 °C (high). Annual precipitation averages 2338.3 Millimeters. Pacific Beach is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.4 °C | 8.9 °C | 357.89 mm |
| February | 3 °C | 9.9 °C | 220.47 mm |
| March | 3.8 °C | 11.2 °C | 274.57 mm |
| April | 5.2 °C | 12.8 °C | 187.96 mm |
| May | 7.7 °C | 15.1 °C | 98.81 mm |
| June | 9.8 °C | 16.8 °C | 83.82 mm |
| July | 11.4 °C | 18.4 °C | 35.56 mm |
| August | 11.5 °C | 19.3 °C | 52.83 mm |
| September | 10.1 °C | 18.9 °C | 80.26 mm |
| October | 7.3 °C | 15.3 °C | 228.6 mm |
| November | 4.7 °C | 11.4 °C | 361.95 mm |
| December | 3 °C | 8.7 °C | 355.6 mm |
| Annual | 6.7 °C | 13.9 °C | 2338.32 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |