Nanaimo, British Columbia climate data is summarized below. Average annual temperatures range from 44.2 °F (low) to 55 °F (high). Annual precipitation averages 39.5 Inches. Nanaimo is located in USDA Plant Hardiness Zone 8a. 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 | -17 °F | -14.9 °F | 3327.4 in. |
| February | -16.5 °F | -14 °F | 2209.8 in. |
| March | -16.1 °F | -13.2 °F | 2489.2 in. |
| April | -15.1 °F | -11.5 °F | 1193.8 in. |
| May | -13.1 °F | -9.1 °F | 1066.8 in. |
| June | -11.6 °F | -7.6 °F | 990.6 in. |
| July | -10 °F | -5.5 °F | 812.8 in. |
| August | -10 °F | -5.6 °F | 914.4 in. |
| September | -11.7 °F | -7.7 °F | 1600.2 in. |
| October | -13.9 °F | -10.8 °F | 4241.8 in. |
| November | -15.9 °F | -13.3 °F | 3987.8 in. |
| December | -17.1 °F | -15 °F | 2641.6 in. |
| Annual | 44.2 °F | 55 °F | 39.49 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |