Frost Dates for Randfontein, Gauteng, South Africa

Coordinates: -26.167, 27.700

Growing Season

The last spring air frost in Randfontein, Gauteng, South Africa typically occurs around Aug 8, and the first autumn air frost around May 9. This gives a frost-free growing season of approximately -91 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 July, with an average low of 6°C (43°F). The warmest month is January, with an average high of 27°C (81°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Aug 8 (last spring) to May 9 (first autumn). Light ground frost (-1°C / 30°F): Jul 19 (last spring) to May 28 (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: Light Ground Frost possible

for today based on past data only.

We predict a frost free growing season at your location from Aug 8 to May 9, which provides approximately 273 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 Jul 19 to May 28, which provides a total of 313 days for growing.

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