Oak Bay, British Columbia climate data is summarized below. Average annual temperatures range from 7.2 °C (low) to 13.2 °C (high). Annual precipitation averages 1246 Millimeters. Oak Bay is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.03 °C | 6.66 °C | 152 mm |
| February | 3.84 °C | 8.16 °C | 110 mm |
| March | 4.38 °C | 9.61 °C | 138 mm |
| April | 5.64 °C | 12.22 °C | 79 mm |
| May | 8.17 °C | 15.29 °C | 59 mm |
| June | 10.48 °C | 17.81 °C | 20 mm |
| July | 12.1 °C | 20.63 °C | 16 mm |
| August | 12.4 °C | 20.59 °C | 26 mm |
| September | 10.66 °C | 17.75 °C | 66 mm |
| October | 7.93 °C | 13.37 °C | 155 mm |
| November | 5 °C | 9.41 °C | 228 mm |
| December | 3.3 °C | 6.89 °C | 197 mm |
| Annual | 7.2 °C | 13.2 °C | 1246 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |