Bandon, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 7.5 °C (low) to 15.5 °C (high). Annual precipitation averages 1496.3 Millimeters. Bandon is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.7 °C | 12.2 °C | 230.12 mm |
| February | 4.6 °C | 12.6 °C | 183.13 mm |
| March | 5 °C | 12.9 °C | 187.2 mm |
| April | 6.1 °C | 13.9 °C | 140.72 mm |
| May | 8 °C | 15.8 °C | 74.42 mm |
| June | 9.9 °C | 17.4 °C | 40.13 mm |
| July | 11.4 °C | 18.9 °C | 8.64 mm |
| August | 11.2 °C | 19.3 °C | 11.68 mm |
| September | 9.9 °C | 19.2 °C | 35.05 mm |
| October | 8.2 °C | 17.2 °C | 102.87 mm |
| November | 6.2 °C | 14 °C | 208.03 mm |
| December | 4.7 °C | 12 °C | 274.32 mm |
| Annual | 7.5 °C | 15.5 °C | 1496.31 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |