Nanaimo, British Columbia climate data is summarized below. Average annual temperatures range from 6.8 °C (low) to 12.8 °C (high). Annual precipitation averages 1003 Millimeters. 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 | 1.36 °C | 5.2 °C | 131 mm |
| February | 2.37 °C | 6.81 °C | 87 mm |
| March | 3 °C | 8.22 °C | 98 mm |
| April | 4.75 °C | 11.33 °C | 47 mm |
| May | 8.5 °C | 15.64 °C | 42 mm |
| June | 11.2 °C | 18.39 °C | 39 mm |
| July | 14.04 °C | 22.13 °C | 32 mm |
| August | 13.96 °C | 21.96 °C | 36 mm |
| September | 10.93 °C | 18.16 °C | 63 mm |
| October | 6.93 °C | 12.48 °C | 167 mm |
| November | 3.3 °C | 8.04 °C | 157 mm |
| December | 1.18 °C | 5.03 °C | 104 mm |
| Annual | 6.8 °C | 12.8 °C | 1003 mm |
| 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 : -12.2°C to -9.4°C |
| Current Drought Conditions | Moderate Drought |