Oak Bay, British Columbia climate data is summarized below. Average annual temperatures range from 45.1 °F (low) to 55.8 °F (high). Annual precipitation averages 49.1 Inches. 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 | -16.1 °F | -14.1 °F | 3860.8 in. |
| February | -15.6 °F | -13.2 °F | 2794 in. |
| March | -15.3 °F | -12.4 °F | 3505.2 in. |
| April | -14.6 °F | -11 °F | 2006.6 in. |
| May | -13.2 °F | -9.3 °F | 1498.6 in. |
| June | -12 °F | -7.9 °F | 508 in. |
| July | -11.1 °F | -6.3 °F | 406.4 in. |
| August | -10.9 °F | -6.3 °F | 660.4 in. |
| September | -11.9 °F | -7.9 °F | 1676.4 in. |
| October | -13.4 °F | -10.4 °F | 3937 in. |
| November | -15 °F | -12.6 °F | 5791.2 in. |
| December | -15.9 °F | -14 °F | 5003.8 in. |
| Annual | 45.1 °F | 55.8 °F | 49.05 in. |
| 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 : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |