Frost Dates for Nanaimo, British Columbia, Canada

Coordinates: 49.150, -123.917

Growing Season

The last spring air frost in Nanaimo, British Columbia, Canada typically occurs around Apr 23, and the first autumn air frost around Oct 7. This gives a frost-free growing season of approximately 167 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 9a, where the average annual extreme minimum temperature is -6.7 to -3.9°C (20 to 25°F). This zone rating helps gardeners determine which perennial plants are likely to survive winter.

Temperature Overview

The coldest month is February, with an average low of 1°C (34°F). The warmest month is August, with an average high of 22°C (72°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Apr 23 (last spring) to Oct 7 (first autumn). Light ground frost (-1°C / 30°F): Apr 6 (last spring) to Oct 24 (first autumn). Hard ground frost (-2°C / 28°F): Feb 14 (last spring) to Nov 30 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone: USDA Growing Zone - 9a

... and the frost data for your area is ...

Current Risk Level: Air Frost possible

for today based on past data only.

We predict a frost free growing season at your location from Apr 23 to Oct 7, which provides approximately 166 frost free days.

For the less tender plants, or if you are planning to protect your plants with fleece etc, your growing season could stretch from Apr 6 to Oct 24, which provides a total of 201 days for growing.

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